Fed balance-sheet composition (H.4.1, weekly)

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Weekly Federal Reserve balance-sheet composition, 2002-12-18 onward: Board of Governors H.4.1 Wednesday levels (millions USD, NSA) for Treasury securities held outright (TREAST), mortgage-backed securities held outright (WSHOMCB) and total assets (WALCL) — redistributed keyless via FRED fredgraph.csv. Carries each leg's share of total assets, week-on-week changes, 13-week annualized runoff paces, distance below each leg's expanding peak, and a balance-sheet-shrinking flag — the quantitative-tightening decomposition for liquidity-regime models. Who joins this: lenders read the MBS/Treasury runoff paces as credit-conditions features; subscription businesses use the shrinking flag as a liquidity-regime covariate for churn and pricing power. Pairs with fred_walcl_intel (total-assets level), fred_money_market_intel (the price of the reserves QT drains) and us_treasury_curve_intel.

Source: US Fed Balance-Sheet Composition Intelligence (FRED, keyless)
Rows: 1,242
Columns: 18
Source cadence: Weekly
Last refreshed: Oct 2, 2026
Theme: finance

Column	Type	Description
date	date	H.4.1 Wednesday observation date (the panel join key — every week lands on a Wednesday). (unit: date)
year_month	string	Calendar month as YYYY-MM. (unit: string)
country	string	Country name (shared normalization layer). (unit: string)
country_code	string	ISO 3166-1 alpha-3 country code (USA). (unit: string)
treasuries_m	float	Securities held outright: U.S. Treasury securities (FRED TREAST, H.4.1), millions of USD, NSA — the Treasury leg of the balance sheet. (unit: millions_usd)
mbs_m	float	Securities held outright: mortgage-backed securities (FRED WSHOMCB, H.4.1), millions of USD, NSA — genuine zeros before the late-2008/2009 large-scale MBS purchases began. (unit: millions_usd)
total_assets_m	float	Total assets less eliminations from consolidation (FRED WALCL, H.4.1), millions of USD, NSA — the denominator for the composition shares. (unit: millions_usd)
treasuries_share_pct	float	Treasury securities as a percent of total assets. (unit: percent)
mbs_share_pct	float	MBS as a percent of total assets. (unit: percent)
treasuries_wow_pct	float	1-week percent change in Treasury holdings (null on the first panel week). (unit: percent)
mbs_wow_pct	float	1-week percent change in MBS holdings (null on the first panel week and whenever the prior week is zero — the pre-QE1 zeros make the ratio undefined). (unit: percent)
total_assets_13w_ann_pct	float	13-week compounded annualized percent change in total assets — the balance-sheet expansion/contraction pace (null for the first 13 panel weeks). (unit: percent)
treasuries_13w_ann_pct	float	13-week compounded annualized percent change in Treasury holdings — the Treasury QT-runoff pace (null for the first 13 panel weeks). (unit: percent)
mbs_13w_ann_pct	float	13-week compounded annualized percent change in MBS holdings — the MBS QT-runoff pace (null for the first 13 panel weeks and whenever the 13-week-ago base is zero). (unit: percent)
treasuries_off_peak_pct	float	Percent below the expanding historical peak of Treasury holdings (0 at a new peak) — the Treasury QT depth gauge. (unit: percent)
mbs_off_peak_pct	float	Percent below the expanding historical peak of MBS holdings (0 at a new peak; null while the expanding peak is zero — the pre-QE1 zeros make 0/0 undefined) — the MBS QT depth gauge. (unit: percent)
shrinking_flag	integer	1 when the 13-week annualized change in total assets is negative (quantitative tightening in force); null before the pace window fills. (unit: flag)
row_hash	string	Deterministic 16-hex sha256 of date + the three H.4.1 levels (idempotency key). (unit: string)

First 10 sample rows — a preview, not the complete dataset.

date	year_month	country	country_code	treasuries_m	total_assets_m	treasuries_share_pct	treasuries_wow_pct	mbs_wow_pct	total_assets_13w_ann_pct	treasuries_13w_ann_pct	mbs_13w_ann_pct	treasuries_off_peak_pct	mbs_off_peak_pct	shrinking_flag	row_hash
2002-12-18	2002-12	United States	USA	629,397	719,542	87.472	—	—	—	—	—	0	—	—	ae9a0255014751a8
2002-12-25	2002-12	United States	USA	629,402	732,059	85.977	0.001	—	—	—	—	0	—	—	c1ac9acf5aa74ad5
2003-01-01	2003-01	United States	USA	629,406	730,994	86.103	0.001	—	—	—	—	0	—	—	fea751d02b476365
2003-01-08	2003-01	United States	USA	629,406	723,762	86.963	0	—	—	—	—	0	—	—	f2165e8ec81ee386
2003-01-15	2003-01	United States	USA	629,406	720,074	87.409	0	—	—	—	—	0	—	—	8d8d9d81bd43c0dd
2003-01-22	2003-01	United States	USA	629,406	735,953	85.523	0	—	—	—	—	0	—	—	b3721f46fb1bc5d0
2003-01-29	2003-01	United States	USA	629,406	712,809	88.299	0	—	—	—	—	0	—	—	62512610825de436
2003-02-05	2003-02	United States	USA	629,401	719,643	87.46	-0.001	—	—	—	—	-0.001	—	—	78756a416dbd0197
2003-02-12	2003-02	United States	USA	630,947	713,281	88.457	0.246	—	—	—	—	0	—	—	cdab457055374575
2003-02-19	2003-02	United States	USA	631,263	730,400	86.427	0.05	—	—	—	—	0	—	—	19a8f285191248b8

Profiled Oct 2, 2026 from snapshot 20261002T022226Z-3d10532fa122

Measured

Completeness: 95.5%
Rows: 1,242
Columns: 18
Columns with gaps: 7

Rows per yeardate · 2002–2026 · 25 years

20022026

Column	Missing	Distinct	Range	Distribution
datedate	0%	1,265	Dec 18, 2002 → Sep 30, 2026	—
year_monthvarchar	0%	283	—	2003-015 2003-045 2003-075
countryvarchar	0%	1	—	United States1,242
country_codevarchar	0%	1	—	USA1,242
treasuries_mdouble	0%	1,380	474,619 → 5,771,393median 2,220,167	26 outside 1st–99th percentile
mbs_mdouble	0%	898	0 → 2,740,185median 1,532,484	13 outside 1st–99th percentile
total_assets_mdouble	0%	1,249	712,809 → 8,965,487median 4,047,467	26 outside 1st–99th percentile
treasuries_share_pctdouble	0%	1,147	21.11 → 91.92median 58.98	26 outside 1st–99th percentile
mbs_share_pctdouble	0%	1,058	0 → 48.22median 30.96	13 outside 1st–99th percentile
treasuries_wow_pctdouble	0.08%	1,144	-7.29 → 12.78median 0.0066	26 outside 1st–99th percentile
mbs_wow_pctdouble	25.6%	714	-2.48 → 785.08median 0	20 outside 1st–99th percentile
total_assets_13w_ann_pctdouble	1%	1,528	-51.84 → 3,409median 1.49	26 outside 1st–99th percentile
treasuries_13w_ann_pctdouble	1%	1,041	-78.29 → 674.01median 1.67	26 outside 1st–99th percentile
mbs_13w_ann_pctdouble	26.6%	848	-28.92 → 1,587,670,423median -0.8502	20 outside 1st–99th percentile
treasuries_off_peak_pctdouble	0%	626	-39.98 → 0median -0.0299	13 outside 1st–99th percentile
mbs_off_peak_pctdouble	25.5%	701	-30.73 → 0median -2.16	10 outside 1st–99th percentile
shrinking_flagbigint	1%	2	0 → 1median 0
row_hashvarchar	0%	919	—	0021828aeff6d2291 0033a6fbcf340b1a1 004113fc661884a41

Point any LLM at the metadata endpoint — the documentation above is machine-readable too (JSON-LD + Croissant).

cURL

curl "https://datazimuts.com/v1/datasets/fred_bs_composition_intel/us_fed_balance_sheet_composition_weekly" | jq '{title, rows, columns_count, license}'

Python

import requests

ds = requests.get("https://datazimuts.com/v1/datasets/fred_bs_composition_intel/us_fed_balance_sheet_composition_weekly").json()
print(ds["title"], ds["rows"], "rows")

# Sample rows for an LLM context window
for row in ds.get("sample_rows", [])[:5]:
    print(row)

API endpoint: https://datazimuts.com/v1/datasets/fred_bs_composition_intel/us_fed_balance_sheet_composition_weekly

Tip: fetch /llms.txt for the full machine-readable catalog.

Cite this snapshot

Pinned to snapshot 20261002T022226Z-3d10532fa122 and its content hash, so readers get exactly the data you used.

APA

US Fed Balance-Sheet Composition Intelligence (FRED, keyless). (2026). Fed balance-sheet composition (H.4.1, weekly) [Data set, snapshot 20261002T022226Z-3d10532fa122, sha256 3d10532fa122]. Datazimuts. Retrieved 2026-10-02, from https://datazimuts.com/en/datasets/fred_bs_composition_intel/us_fed_balance_sheet_composition_weekly?snapshot=20261002T022226Z-3d10532fa122

BibTeX

@misc{dz_fred_bs_composition_intel_us_fed_balance_3d10532f,
  title        = {{Fed balance-sheet composition (H.4.1, weekly)}},
  author       = {{US Fed Balance-Sheet Composition Intelligence (FRED, keyless)}},
  year         = {2026},
  publisher    = {Datazimuts},
  howpublished = {\url{https://datazimuts.com/en/datasets/fred_bs_composition_intel/us_fed_balance_sheet_composition_weekly?snapshot=20261002T022226Z-3d10532fa122}},
  note         = {Snapshot 20261002T022226Z-3d10532fa122, sha256 3d10532fa122f81a9b45e1bc913b6c4085b80bc5c0265abb23d24d7151d2c120; accessed 2026-10-02}
}

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Fed balance-sheet composition (H.4.1, weekly)

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