The 75th percentile front-end debt-to-income ratio. The front-end DTI ratio is the percentage of a borrower's monthly income that would go toward housing expenses. The total housing liabilities of the borrower, including the monthly principal, interest, taxes, insurance, association dues, etc., are divided by the total monthly income of the borrower. Front-end DTI is reported at origination. For more detail see: methodology (https://www.philadelphiafed.org/-/media/frbp/assets/surveys-and-data/y14/y-14-data-methodology).

The Mortgage Debt Outstanding table is no longer being updated as of March 2020. Many of the series that were published in this table can be found in the Z1 Financial Accounts of the United States release. The Z1 equivalent of this series is found at BOGZ1FL403065015Q. (https://fred.stlouisfed.org/series/BOGZ1FL403065015Q) For further information, please refer to the Board of Governors of the Federal Reserve System's Mortgage Debt Outstanding (http://www.federalreserve.gov/econresdata/releases/mortoutstand/current.htm).

The Mortgage Debt Outstanding table is no longer being updated as of March 2020. Many of the series that were published in this table can be found in the Z1 Financial Accounts of the United States release. The Z1 equivalent of this series is found at BOGZ1FL413065533Q. (https://fred.stlouisfed.org/series/BOGZ1FL413065533Q) For further information, please refer to the Board of Governors of the Federal Reserve System's Mortgage Debt Outstanding (http://www.federalreserve.gov/econresdata/releases/mortoutstand/current.htm).

Series Is Presented Here As Three Variables--(1)--Original Data, 1955-1959 (2)--Original Data, 1959-1966 (3)--Original Data, 1965-1968. The Figures For January-June, 1959 Include Member Bank Holdings Adjusted To Reflect New Coverage; From July 1959 On, Member Bank Holdings Represent Revised Figures. Source: Data Derived By NBER From The Following Sources: Federal Reserve Bulletins; Fhlb"Selected Balance Sheet Data, All Operating Savings And Loan Associations"; Savings Bank Journal; Statistical Bulletin, National Association Of Mutual Savings Banks;"Trends In Savings And Lending At Savings And Load Associations";"The Life Insurance Tally" This NBER data series m10130b appears on the NBER website in Chapter 10 at http://www.nber.org/databases/macrohistory/contents/chapter10.html. NBER Indicator: m10130b

For further information, please refer to the Board of Governors of the Federal Reserve System's Senior Loan Officer Opinion Survey on Bank Lending Practices release, online at http://www.federalreserve.gov/boarddocs/SnLoanSurvey/.

Origination Fees and Discount Points are the total charged by the lender at settlement. One point equals one percent of the loan amount. Data is provided "as is," by Freddie Mac© with no warranties of any kind, express or implied, including, but not limited to, warranties of accuracy or implied warranties of merchantability or fitness for a particular purpose. Use of the data is at the user's sole risk. In no event will Freddie Mac be liable for any damages arising out of or related to the data, including, but not limited to direct, indirect, incidental, special, consequential, or punitive damages, whether under a contract, tort, or any other theory of liability, even if Freddie Mac is aware of the possibility of such damages. Copyright, 2016, Freddie Mac. Reprinted with permission.

The current face value of mortgage-backed obligations held by Federal Reserve Banks. These securities are guaranteed by Fannie Mae, Freddie Mac, or Ginnie Mae.

Source ID: FA893065505.Q For more information about the Flow of Funds tables, see the Financial Accounts Guide (https://www.federalreserve.gov/apps/fof/Default.aspx). With each quarterly release, the source may make major data and structural revisions to the series and tables. These changes are available in the Release Highlights (https://www.federalreserve.gov/apps/fof/FOFHighlight.aspx). In the Financial Accounts, the source identifies each series by a string of patterned letters and numbers. For a detailed description, including how this series is constructed, see the series analyzer (https://www.federalreserve.gov/apps/fof/SeriesAnalyzer.aspx?s=FA893065505&t=) provided by the source.

Source ID: FA413065123.Q For more information about the Flow of Funds tables, see the Financial Accounts Guide (https://www.federalreserve.gov/apps/fof/Default.aspx). With each quarterly release, the source may make major data and structural revisions to the series and tables. These changes are available in the Release Highlights (https://www.federalreserve.gov/apps/fof/FOFHighlight.aspx). In the Financial Accounts, the source identifies each series by a string of patterned letters and numbers. For a detailed description, including how this series is constructed, see the series analyzer (https://www.federalreserve.gov/apps/fof/SeriesAnalyzer.aspx?s=FA413065123&t=) provided by the source.

Source ID: FL403065005.Q For more information about the Flow of Funds tables, see the Financial Accounts Guide (https://www.federalreserve.gov/apps/fof/Default.aspx). With each quarterly release, the source may make major data and structural revisions to the series and tables. These changes are available in the Release Highlights (https://www.federalreserve.gov/apps/fof/FOFHighlight.aspx). In the Financial Accounts, the source identifies each series by a string of patterned letters and numbers. For a detailed description, including how this series is constructed, see the series analyzer (https://www.federalreserve.gov/apps/fof/SeriesAnalyzer.aspx?s=FL403065005&t=) provided by the source.

Source ID: FL413065443.Q For more information about the Flow of Funds tables, see the Financial Accounts Guide (https://www.federalreserve.gov/apps/fof/Default.aspx). With each quarterly release, the source may make major data and structural revisions to the series and tables. These changes are available in the Release Highlights (https://www.federalreserve.gov/apps/fof/FOFHighlight.aspx). In the Financial Accounts, the source identifies each series by a string of patterned letters and numbers. For a detailed description, including how this series is constructed, see the series analyzer (https://www.federalreserve.gov/apps/fof/SeriesAnalyzer.aspx?s=FL413065443&t=) provided by the source.

The Distributional Financial Accounts (DFAs) integrate two data products produced by the Federal Reserve Board: the Financial Accounts of the United States, which provide quarterly data on aggregate balance sheets of major sectors of the U.S. economy, and the Survey of Consumer Finances (SCF), which provides comprehensive triennial microdata on the assets and liabilities of a representative sample of U.S. households. Information on the data collection process can be found at the Board of Governors (https://www.federalreserve.gov/releases/efa/efa-distributional-financial-accounts.htm)."

For further information, please refer to the Board of Governors of the Federal Reserve System's H.8 release, online at http://www.federalreserve.gov/releases/h8/.

Source ID: FA413065533.Q For more information about the Flow of Funds tables, see the Financial Accounts Guide (https://www.federalreserve.gov/apps/fof/Default.aspx). With each quarterly release, the source may make major data and structural revisions to the series and tables. These changes are available in the Release Highlights (https://www.federalreserve.gov/apps/fof/FOFHighlight.aspx). In the Financial Accounts, the source identifies each series by a string of patterned letters and numbers. For a detailed description, including how this series is constructed, see the series analyzer (https://www.federalreserve.gov/apps/fof/SeriesAnalyzer.aspx?s=FA413065533&t=) provided by the source.

Optimal Blue Mortgage Market Indices (https://www2.optimalblue.com/obmmi/)™ (OBMMI™) is calculated from actual locked rates with consumers across over one-third of all mortgage transactions nationwide. OBMMI includes multiple mortgage pricing indices developed around the most popular products and specific borrower and loan level attributes. Each index is calculated as the average of all appropriate rate locks locked through the Optimal Blue product eligibility and pricing engine on a given day. More details about methodology and definitions are available here (https://www2.optimalblue.com/obmmi/).

Optimal Blue Mortgage Market Indices (https://www2.optimalblue.com/obmmi/)™ (OBMMI™) is calculated from actual locked rates with consumers across over one-third of all mortgage transactions nationwide. OBMMI includes multiple mortgage pricing indices developed around the most popular products and specific borrower and loan level attributes. Each index is calculated as the average of all appropriate rate locks locked through the Optimal Blue product eligibility and pricing engine on a given day. More details about methodology and definitions are available here (https://www2.optimalblue.com/obmmi/).

Sahm Recession Indicator signals the start of a recession when the three-month moving average of the national unemployment rate (U3) (https://fred.stlouisfed.org/series/UNRATE) rises by 0.50 percentage points or more relative to the minimum of the three-month averages from the previous 12 months.

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Source ID: FA643090075.Q For more information about the Flow of Funds tables, see the Financial Accounts Guide (https://www.federalreserve.gov/apps/fof/Default.aspx). With each quarterly release, the source may make major data and structural revisions to the series and tables. These changes are available in the Release Highlights (https://www.federalreserve.gov/apps/fof/FOFHighlight.aspx). In the Financial Accounts, the source identifies each series by a string of patterned letters and numbers. For a detailed description, including how this series is constructed, see the series analyzer (https://www.federalreserve.gov/apps/fof/SeriesAnalyzer.aspx?s=FA643090075&t=) provided by the source.

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Occupation refers to the occupation in which the reference person received the most earnings during the survey period. The reference person is the first member mentioned by the respondent when asked to "Start with the name of the person or one of the persons who owns or rents the home." It is with respect to this person that the relationship of the other consumer unit members is determined. A consumer unit comprises either: (1) all members of a particular household who are related by blood, marriage, adoption, or other legal arrangements; (2) a person living alone or sharing a household with others or living as a roomer in a private home or lodging house or in permanent living quarters in a hotel or motel, but who is financially independent; or (3) two or more persons living together who use their income to make joint expenditure decisions. Financial independence is determined by the three major expense categories: Housing, food, and other living expenses. To be considered financially independent, at least two of the three major expense categories have to be provided entirely, or in part, by the respondent. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Occupation refers to the occupation in which the reference person received the most earnings during the survey period. The reference person is the first member mentioned by the respondent when asked to "Start with the name of the person or one of the persons who owns or rents the home." It is with respect to this person that the relationship of the other consumer unit members is determined. A consumer unit comprises either: (1) all members of a particular household who are related by blood, marriage, adoption, or other legal arrangements; (2) a person living alone or sharing a household with others or living as a roomer in a private home or lodging house or in permanent living quarters in a hotel or motel, but who is financially independent; or (3) two or more persons living together who use their income to make joint expenditure decisions. Financial independence is determined by the three major expense categories: Housing, food, and other living expenses. To be considered financially independent, at least two of the three major expense categories have to be provided entirely, or in part, by the respondent. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Deductions for mortgage real estate loan interest were limited. Personal interest was not deductible. For additional information about the return filing requirements, see the annual reports, Statistics of Income-Individual Income Tax Returns at https://www.irs.gov/uac/soi-tax-stats-historical-data-tables.

This series no longer appears on the Senior Loan Officer Opinion Survey on Bank Lending practices. For further information, please refer to the Board of Governors of the Federal Reserve System's Senior Loan Officer Opinion Survey on Bank Lending Practices release, online at http://www.federalreserve.gov/boarddocs/SnLoanSurvey/.

The Mortgage Debt Outstanding table is no longer being updated as of March 2020. Many of the series that were published in this table can be found in the Z1 Financial Accounts of the United States release. The Z1 equivalent of this series is found at ASMRMA. (https://fred.stlouisfed.org/series/ASMRMA) For further information, please refer to the Board of Governors of the Federal Reserve System's Mortgage Debt Outstanding (http://www.federalreserve.gov/econresdata/releases/mortoutstand/current.htm).

Source ID: FL103065005.Q For more information about the Flow of Funds tables, see the Financial Accounts Guide (https://www.federalreserve.gov/apps/fof/Default.aspx). With each quarterly release, the source may make major data and structural revisions to the series and tables. These changes are available in the Release Highlights (https://www.federalreserve.gov/apps/fof/FOFHighlight.aspx). In the Financial Accounts, the source identifies each series by a string of patterned letters and numbers. For a detailed description, including how this series is constructed, see the series analyzer (https://www.federalreserve.gov/apps/fof/SeriesAnalyzer.aspx?s=FL103065005&t=) provided by the source.

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Source ID: FA103065405.Q For more information about the Flow of Funds tables, see the Financial Accounts Guide (https://www.federalreserve.gov/apps/fof/Default.aspx). With each quarterly release, the source may make major data and structural revisions to the series and tables. These changes are available in the Release Highlights (https://www.federalreserve.gov/apps/fof/FOFHighlight.aspx). In the Financial Accounts, the source identifies each series by a string of patterned letters and numbers. For a detailed description, including how this series is constructed, see the series analyzer (https://www.federalreserve.gov/apps/fof/SeriesAnalyzer.aspx?s=FA103065405&t=) provided by the source.

Source ID: FA413065433.Q For more information about the Flow of Funds tables, see the Financial Accounts Guide (https://www.federalreserve.gov/apps/fof/Default.aspx). With each quarterly release, the source may make major data and structural revisions to the series and tables. These changes are available in the Release Highlights (https://www.federalreserve.gov/apps/fof/FOFHighlight.aspx). In the Financial Accounts, the source identifies each series by a string of patterned letters and numbers. For a detailed description, including how this series is constructed, see the series analyzer (https://www.federalreserve.gov/apps/fof/SeriesAnalyzer.aspx?s=FA413065433&t=) provided by the source.

The Mortgage Debt Outstanding table is no longer being updated as of March 2020. Many of the series that were published in this table can be found in the Z1 Financial Accounts of the United States release. The Z1 equivalent of this series is found at BOGZ1FL413065653Q. (https://fred.stlouisfed.org/series/BOGZ1FL413065653Q) For further information, please refer to the Board of Governors of the Federal Reserve System's Mortgage Debt Outstanding (http://www.federalreserve.gov/econresdata/releases/mortoutstand/current.htm).

Source ID: FL403065015.Q For more information about the Flow of Funds tables, see the Financial Accounts Guide (https://www.federalreserve.gov/apps/fof/Default.aspx). With each quarterly release, the source may make major data and structural revisions to the series and tables. These changes are available in the Release Highlights (https://www.federalreserve.gov/apps/fof/FOFHighlight.aspx). In the Financial Accounts, the source identifies each series by a string of patterned letters and numbers. For a detailed description, including how this series is constructed, see the series analyzer (https://www.federalreserve.gov/apps/fof/SeriesAnalyzer.aspx?s=FL403065015&t=) provided by the source.

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Occupation refers to the occupation in which the reference person received the most earnings during the survey period. The reference person is the first member mentioned by the respondent when asked to "Start with the name of the person or one of the persons who owns or rents the home." It is with respect to this person that the relationship of the other consumer unit members is determined. A consumer unit comprises either: (1) all members of a particular household who are related by blood, marriage, adoption, or other legal arrangements; (2) a person living alone or sharing a household with others or living as a roomer in a private home or lodging house or in permanent living quarters in a hotel or motel, but who is financially independent; or (3) two or more persons living together who use their income to make joint expenditure decisions. Financial independence is determined by the three major expense categories: Housing, food, and other living expenses. To be considered financially independent, at least two of the three major expense categories have to be provided entirely, or in part, by the respondent. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

The AD&Co US Mortgage High Yield Index (USMHY) tracks the total return of the bonds issued within the CRT programs of Fannie Mae and Freddie Mac. USMHY is an informational, investment-oriented monthly index of the return components: price, coupon, paydown, and credit loss. Accompanied by standard risk metrics from our models, the index is useful for comparisons with individual CRT bonds or relative value to other credit markets. Investors and fund managers can use the index to assess the broad market returns, risks and opportunities available through investing in a market-weighted, passive portfolio of US mortgage credit risk transfer instruments. The Index also provides a means of comparing the returns of an actively managed portfolio against a passive, naive market portfolio as approximated by the Index. The Mid-Tier and its sub-indices allow for approximations of performance comparisons by vintage or age, across the capital stack, and by initial credit risk level and/or vintage as indicated by original attachment point. <b>Disclaimer:</b> The AD&Co U.S. Mortgage High-Yield Index serves as an informational index and is not for commercial-use purposes. The Index's accuracy, completeness, timeliness and suitability for any purpose are not guaranteed. The Index does not constitute (1) investment, legal, accounting, tax, or other professional advice or (2) any recommendation or solicitation to purchase, hold, sell, or otherwise deal in any investment. This Index has been prepared for general informational purposes, without consideration of the circumstances or objectives of any particular investor. Any reliance on the Index is at the reader's sole risk. All investment is subject to numerous risks, known and unknown. Past performance is no guarantee of future results. For investment advice, seek a qualified investment professional. Not for redistribution without permission. Note: An affiliate of Andrew Davidson & Co., Inc. engages in trading activities in investments that may be the same or similar to those featured in the Index. <b>Index Inclusion Rules</b> Only cash CAS and STACR bonds offered to the public, whether they are exchangeable or not, that have or have had IDC prices. Bond factor > = .25 Floating rate bonds only. Collateral Types 30 Year Residential. Fixed Rate: STACR-DN, DNA, HQ, HQA, HRP, CAS – C0 Tranche names – B, B1, B2, M3, M2, M1 Normally listed on GSE websites: <a href='https://crt.freddiemac.com/offerings/stacr.aspx#issuance-details'>Freddie Mac</a>, <a href='http://www.fanniemae.com/portal/funding-the-market/credit-risk/transactions.html'>Fannie Mae</a> No private placements No Child Classes (Exchangeable into) or Retained Classes (H bonds) No CIRT, ACIS, SPI Original attachment points and CAS STACR <table style='width:50%'><tr><th>Tier</th><th>Attachment Points</th><th>CAS STACR Class</th></tr><tr><td>0</td><td>> = 0.00 < .25</td><td>STACR Class B, B2; CAS Class B</td></tr><tr><td>1</td><td>> = 0.25 < .95</td><td>STACR Class B1, Old M3; CAS Class B1</td></tr><tr><td>2</td><td>> = 0.95 < 1.75</td><td>STACR Class M3, M2; CAS Class M2</td></tr><tr><td>3</td><td>> = 1.75 < 3.75</td><td>STACR Class M2, M1; CAS Class M1</td></tr><tr><td>Mid</td><td>> = 0.25 < 3.75</td><td>STACR Class Mixed; CAS Class Mixed</td></tr></table> Input data provided by Intex and ICE Data Services. © Andrew Davidson & Co., Inc. All rights reserved.

The AD&Co US Mortgage High Yield Index (USMHY) tracks the total return of the bonds issued within the CRT programs of Fannie Mae and Freddie Mac. USMHY is an informational, investment-oriented monthly index of the return components: price, coupon, paydown, and credit loss. Accompanied by standard risk metrics from our models, the index is useful for comparisons with individual CRT bonds or relative value to other credit markets. Investors and fund managers can use the index to assess the broad market returns, risks and opportunities available through investing in a market-weighted, passive portfolio of US mortgage credit risk transfer instruments. The Index also provides a means of comparing the returns of an actively managed portfolio against a passive, naive market portfolio as approximated by the Index. The Mid-Tier and its sub-indices allow for approximations of performance comparisons by vintage or age, across the capital stack, and by initial credit risk level and/or vintage as indicated by original attachment point. <b>Disclaimer:</b> The AD&Co U.S. Mortgage High-Yield Index serves as an informational index and is not for commercial-use purposes. The Index's accuracy, completeness, timeliness and suitability for any purpose are not guaranteed. The Index does not constitute (1) investment, legal, accounting, tax, or other professional advice or (2) any recommendation or solicitation to purchase, hold, sell, or otherwise deal in any investment. This Index has been prepared for general informational purposes, without consideration of the circumstances or objectives of any particular investor. Any reliance on the Index is at the reader's sole risk. All investment is subject to numerous risks, known and unknown. Past performance is no guarantee of future results. For investment advice, seek a qualified investment professional. Not for redistribution without permission. Note: An affiliate of Andrew Davidson & Co., Inc. engages in trading activities in investments that may be the same or similar to those featured in the Index. <b>Index Inclusion Rules</b> Only cash CAS and STACR bonds offered to the public, whether they are exchangeable or not, that have or have had IDC prices. Bond factor > = .25 Floating rate bonds only. Collateral Types 30 Year Residential. Fixed Rate: STACR-DN, DNA, HQ, HQA, HRP, CAS – C0 Tranche names – B, B1, B2, M3, M2, M1 Normally listed on GSE websites: <a href='https://crt.freddiemac.com/offerings/stacr.aspx#issuance-details'>Freddie Mac</a>, <a href='http://www.fanniemae.com/portal/funding-the-market/credit-risk/transactions.html'>Fannie Mae</a> No private placements No Child Classes (Exchangeable into) or Retained Classes (H bonds) No CIRT, ACIS, SPI Original attachment points and CAS STACR <table style='width:50%'><tr><th>Tier</th><th>Attachment Points</th><th>CAS STACR Class</th></tr><tr><td>0</td><td>> = 0.00 < .25</td><td>STACR Class B, B2; CAS Class B</td></tr><tr><td>1</td><td>> = 0.25 < .95</td><td>STACR Class B1, Old M3; CAS Class B1</td></tr><tr><td>2</td><td>> = 0.95 < 1.75</td><td>STACR Class M3, M2; CAS Class M2</td></tr><tr><td>3</td><td>> = 1.75 < 3.75</td><td>STACR Class M2, M1; CAS Class M1</td></tr><tr><td>Mid</td><td>> = 0.25 < 3.75</td><td>STACR Class Mixed; CAS Class Mixed</td></tr></table> Input data provided by Intex and ICE Data Services. © Andrew Davidson & Co., Inc. All rights reserved.

The Mortgage Debt Outstanding table is no longer being updated as of March 2020. Many of the series that were published in this table can be found in the Z1 Financial Accounts of the United States release. The Z1 equivalent of this series is the sum of FGTTLMQ027S (https://fred.stlouisfed.org/series/FGTTLMQ027S) and BOGZ1FL403065005Q (https://fred.stlouisfed.org/series/BOGZ1FL403065005Q). For further information, please refer to the Board of Governors of the Federal Reserve System's Mortgage Debt Outstanding (http://www.federalreserve.gov/econresdata/releases/mortoutstand/current.htm).

Source ID: FL644090073.Q For more information about the Flow of Funds tables, see the Financial Accounts Guide (https://www.federalreserve.gov/apps/fof/Default.aspx). With each quarterly release, the source may make major data and structural revisions to the series and tables. These changes are available in the Release Highlights (https://www.federalreserve.gov/apps/fof/FOFHighlight.aspx). In the Financial Accounts, the source identifies each series by a string of patterned letters and numbers. For a detailed description, including how this series is constructed, see the series analyzer (https://www.federalreserve.gov/apps/fof/SeriesAnalyzer.aspx?s=FL644090073&t=) provided by the source.

Housing tenure refers to the family's principal place of residence during the survey. "Owner" includes families living in their own homes, cooperatives or condominium apartments, or townhouses. "Renter" includes families paying rent, as well as families living rent-free in lieu of wages. A consumer unit comprises either: (1) all members of a particular household who are related by blood, marriage, adoption, or other legal arrangements; (2) a person living alone or sharing a household with others or living as a roomer in a private home or lodging house or in permanent living quarters in a hotel or motel, but who is financially independent; or (3) two or more persons living together who use their income to make joint expenditure decisions. Financial independence is determined by the three major expense categories: Housing, food, and other living expenses. To be considered financially independent, at least two of the three major expense categories have to be provided entirely, or in part, by the respondent. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Age refers to the reference person's age, where the reference person is the first member mentioned by the respondent when asked to "Start with the name of the person or one of the persons who owns or rents the home." It is with respect to this person that the relationship of the other consumer unit members is determined. A consumer unit comprises either: (1) all members of a particular household who are related by blood, marriage, adoption, or other legal arrangements; (2) a person living alone or sharing a household with others or living as a roomer in a private home or lodging house or in permanent living quarters in a hotel or motel, but who is financially independent; or (3) two or more persons living together who use their income to make joint expenditure decisions. Financial independence is determined by the three major expense categories: Housing, food, and other living expenses. To be considered financially independent, at least two of the three major expense categories have to be provided entirely, or in part, by the respondent. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

Occupation refers to the occupation in which the reference person received the most earnings during the survey period. The reference person is the first member mentioned by the respondent when asked to "Start with the name of the person or one of the persons who owns or rents the home." It is with respect to this person that the relationship of the other consumer unit members is determined. A consumer unit comprises either: (1) all members of a particular household who are related by blood, marriage, adoption, or other legal arrangements; (2) a person living alone or sharing a household with others or living as a roomer in a private home or lodging house or in permanent living quarters in a hotel or motel, but who is financially independent; or (3) two or more persons living together who use their income to make joint expenditure decisions. Financial independence is determined by the three major expense categories: Housing, food, and other living expenses. To be considered financially independent, at least two of the three major expense categories have to be provided entirely, or in part, by the respondent. For more details about the data or the survey, visit the FAQs (https://www.bls.gov/cex/csxfaqs.htm).

The 90th percentile front-end debt-to-income ratio. The front-end DTI ratio is the percentage of a borrower's monthly income that would go toward housing expenses. The total housing liabilities of the borrower, including the monthly principal, interest, taxes, insurance, association dues, etc., are divided by the total monthly income of the borrower. Front-end DTI is reported at origination. For more detail see: methodology (https://www.philadelphiafed.org/-/media/frbp/assets/surveys-and-data/y14/y-14-data-methodology).

The 50th percentile back-end debt-to-income (DTI) ratio. The back-end DTI ratio is the percentage of a borrower's monthly income that would go toward all the borrower's debt obligations. The total monthly debt payments (including proposed housing expenses) are divided by the total monthly income of the borrower. Back-end DTI is reported at origination. For more detail see: methodology (https://www.philadelphiafed.org/-/media/frbp/assets/surveys-and-data/y14/y-14-data-methodology).

The 50th percentile front-end debt-to-income ratio. The front-end DTI ratio is the percentage of a borrower's monthly income that would go toward housing expenses. The total housing liabilities of the borrower, including the monthly principal, interest, taxes, insurance, association dues, etc., are divided by the total monthly income of the borrower. Front-end DTI is reported at origination. For more detail see: methodology (https://www.philadelphiafed.org/-/media/frbp/assets/surveys-and-data/y14/y-14-data-methodology).