Table Data - Overnight Unsecured AMERIBOR Benchmark Interest Rate

Title Overnight Unsecured AMERIBOR Benchmark Interest Rate
Series ID AMERIBOR
Source American Financial Exchange
Release Historical Overnight AMERIBOR Unsecured Interest Rate
Seasonal Adjustment Not Seasonally Adjusted
Frequency Daily
Units Percent
Date Range 2026-05-18 to 2026-05-29
Last Updated 2026-06-01 7:03 AM CDT
Notes Data prior to June 17, 2019 is only available from Monday to Friday (excluding trading holidays).

AMERIBOR® (American Interbank Offered Rate) is a benchmark interest rate based on overnight unsecured loans transacted on the American Financial Exchange (AFX). AMERIBOR® is calculated as the transaction volume weighted average interest rate of the daily transactions in the AMERIBOR® overnight unsecured loan market on the AFX. More details about AMERIBOR® methodology can be found on the source's website, under the Resources section.

AMERIBOR® is a registered trademark of the American Financial Exchange (AFX). © Copyright, American Financial Exchange (AFX). All Rights Reserved.
DATE VALUE
2026-05-18 3.68136
2026-05-19 3.67924
2026-05-20 3.67767
2026-05-21 3.67920
2026-05-22 3.68096
2026-05-25 3.68096
2026-05-26 3.68243
2026-05-27 3.68459
2026-05-28 3.68605
2026-05-29 3.68062

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