Table Data - AD&Co US Mortgage High Yield Index, Credit-and-Option-Adjusted Spread: Tier 3

Title AD&Co US Mortgage High Yield Index, Credit-and-Option-Adjusted Spread: Tier 3
Series ID CROASTIER3
Source Andrew Davidson & Co., Inc.
Release AD&Co US Mortgage High Yield Index
Seasonal Adjustment Not Seasonally Adjusted
Frequency Monthly
Units Index
Date Range 2015-06-01 to 2026-07-01
Last Updated 2026-08-11 3:36 PM CDT
Notes The AD&Co US Mortgage High Yield Index crOAS, credit-and-option-adjusted spread, is an extension of the traditional OAS measure. On a set of 20 standardized, probabilistically weighted, market-and-model stress scenarios, AD&Co computes a discount rate that equates expected present value of tranche's cash flows to the observed market price; the cash flows are loss-adjusted using AD&Co's LoanDynamics Model (LDM).

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.

Until February of 2022, AD&Co has been computing crOAS relative to the Libor-swap rate curve that is set to retire in 2023. Following the prevailing market trend and starting from its February-end report, AD&Co began computing the crOAS metric relative to the Treasury-curve benchmark. Given the differences between the two rate curves, this change should account for approximately 6 to 12 bps widening in spread for the AD&Co CRT Indices.

Disclaimer: 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.

Index Inclusion Rules
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 – all
Tranche names – B, B1, B2, M3, M2, M1, M1A, M1B, A1
Normally listed on GSE websites: Freddie Mac, Fannie Mae
No private placements
No Child Classes (Exchangeable into) or Retained Classes (H bonds)
No CIRT, ACIS, SPI
Original attachment points and CAS STACR

TierAttachment PointsCAS STACR Class0> = 0.00 < .25STACR Class B, B2; CAS Class B1> = 0.25 < .95STACR Class B1, Old M3; CAS Class B12> = 0.95 < 1.75STACR Class M3, M2; CAS Class M23> = 1.75 < 3.75STACR Class M2, M1; CAS Class M1Mid> = 0.25 < 3.75STACR Class Mixed; CAS Class Mixed

Input data provided by Intex and ICE Data Services.

© Andrew Davidson & Co., Inc. All rights reserved.
DATE VALUE
2015-06-01 193.8047055672
2015-07-01 174.7291152030
2015-08-01 185.9352106662
2015-09-01 188.7562998342
2015-10-01 198.3301926224
2015-11-01 206.8177211134
2015-12-01 215.4247638735
2016-01-01 234.6878706394
2016-02-01 248.9427266954
2016-03-01 226.6316421569
2016-04-01 192.2963843363
2016-05-01 165.2735833388
2016-06-01 154.3190952908
2016-07-01 125.5560621053
2016-08-01 100.5312461358
2016-09-01 90.4283976158
2016-10-01 122.7668395093
2016-11-01 144.8293653802
2016-12-01 137.4993842943
2017-01-01 130.7947388002
2017-02-01 121.8184976527
2017-03-01 113.5025639365
2017-04-01 95.9288849992
2017-05-01 86.0623780517
2017-06-01 79.1593053182
2017-07-01 56.3652183186
2017-08-01 60.0601166172
2017-09-01 65.8181450627
2017-10-01 55.5595204381
2017-11-01 58.5735177996
2017-12-01 49.9693402518
2018-01-01 60.6588549141
2018-02-01 69.9865109298
2018-03-01 70.4433001886
2018-04-01 76.6219354844
2018-05-01 73.0700622439
2018-06-01 72.3066342571
2018-07-01 78.8599928393
2018-08-01 72.8496761951
2018-09-01 74.3175116160
2018-10-01 83.2657650050
2018-11-01 96.2140454991
2018-12-01 126.7263132560
2019-01-01 116.6565695007
2019-02-01 111.8929858493
2019-03-01 107.3844905444
2019-04-01 105.5464976300
2019-05-01 95.4032196247
2019-06-01 102.9475705293
2019-07-01 99.5343360816
2019-08-01 108.1707723307
2019-09-01 118.5224423511
2019-10-01 122.0415778185
2019-11-01 128.4663181189
2019-12-01 128.1422617420
2020-01-01 118.8014147799
2020-02-01 120.1424032141
2020-03-01 825.7763358784
2020-04-01 916.1446959108
2020-05-01 546.7373754270
2020-06-01 351.5534117614
2020-07-01 317.5111569053
2020-08-01 208.7682364154
2020-09-01 268.6202096769
2020-10-01 248.4103607725
2020-11-01 253.1055568988
2020-12-01 222.1425933943
2021-01-01 189.2256144468
2021-02-01 179.4376264215
2021-03-01 179.4610954890
2021-04-01 149.4144013548
2021-05-01 161.6291378942
2021-06-01 137.2666068150
2021-07-01 147.5803069730
2021-08-01 133.4365779698
2021-09-01 134.2913255390
2021-10-01 112.2803720816
2021-11-01 122.1956029631
2021-12-01 132.0260619528
2022-01-01 113.2408942618
2022-02-01 156.1794796417
2022-03-01 221.7205772557
2022-04-01 193.0863841461
2022-05-01 293.5351957158
2022-06-01 358.6968711470
2022-07-01 309.8468576785
2022-08-01 273.1445508772
2022-09-01 371.8752534317
2022-10-01 383.5363467251
2022-11-01 312.4265947915
2022-12-01 276.6695389916
2023-01-01 250.2029931599
2023-02-01 252.1248491428
2023-03-01 277.8576917252
2023-04-01 250.9469877556
2023-05-01 247.3079064131
2023-06-01 248.4583453777
2023-07-01 210.5969770086
2023-08-01 233.7636456233
2023-09-01 221.9718417136
2023-10-01 223.5612714163
2023-11-01 212.0704857389
2023-12-01 199.3166552376
2024-01-01 173.4783640559
2024-02-01 183.9772717310
2024-03-01 190.1652421319
2024-04-01 184.1814272869
2024-05-01 188.4182832600
2024-06-01 183.9805337014
2024-07-01 178.2799974714
2024-08-01 183.1153834029
2024-09-01 187.3535666251
2024-10-01 183.5538822086
2024-11-01 181.6854045649
2024-12-01 175.8002658804
2025-01-01 171.1023768968
2025-02-01 177.2589246843
2025-03-01 196.5665480550
2025-04-01 195.8597277202
2025-05-01 169.3933304578
2025-06-01 174.9533697524
2025-07-01 174.1727423399
2025-08-01 158.2205023969
2025-09-01 171.1998397374
2025-10-01 175.6499286666
2025-11-01 195.4248726725
2025-12-01 198.7546348852
2026-01-01 202.2038490753
2026-02-01 202.6168562291
2026-03-01 214.3694435264
2026-04-01 209.2836185173
2026-05-01 202.8044841168
2026-06-01 207.9914846401
2026-07-01 204.2993179700

Back to Top