Observations

2026-03-18: 2,010,396

Updated: Mar 19, 2026 3:33 PM CDT

Units:

Millions of U.S. Dollars,

Not Seasonally Adjusted

Frequency:

Weekly,

Ending Wednesday

Notes

Title	Release Dates

Reserve Bank Credit - Securities Held Outright - Mortgage-Backed Securities	2009-02-05	2015-02-18
Reserve Bank Credit: Securities Held Outright: Mortgage-Backed Securities	2015-02-19	2019-08-20
Assets: Securities Held Outright: Mortgage-Backed Securities: Week Average	2019-08-21	2026-03-19

Source

Board of Governors of the Federal Reserve System (US)	2009-02-05	2026-03-19

Release

H.4.1 Factors Affecting Reserve Balances	2009-02-05	2026-03-19

Units

Billions of Dollars	2009-02-05	2015-02-18
Millions of Dollars	2015-02-19	2019-08-20
Millions of U.S. Dollars	2019-08-21	2026-03-19

Frequency

Weekly, Ending Wednesday	2009-02-05	2026-03-19

Seasonal Adjustment

Not Seasonally Adjusted	2009-02-05	2026-03-19

Notes

On November 25, 2008, the Federal Reserve announced a program to purchase mortgage-backed securities guaranteed by Fannie Mae, Freddie Mac, and Ginnie Mae. The goal of the program is to provide support to mortgage and housing markets and to foster improved conditions in financial markets. Purchases of these securities began on January 5, 2009. Additional information on System transactions in mortgage-backed securities is available at www.newyorkfed.org/markets/mbs/.	2009-02-05	2025-11-12
For questions on the data, please contact the data source (https://www.federalreserve.gov/apps/ContactUs/feedback.aspx?refurl=/releases/h41/%). For questions on FRED functionality, please contact us here (https://fred.stlouisfed.org/contactus/).	2025-11-13	2026-03-19

Release Tables

H.4.1 Factors Affecting Reserve Balances