The Fed Balance Sheet Manual

Research note. Computed at render from our committed weekly H.4.1 series (FRED WALCL, 2002+) and SPY closes. Weeks are dated by initial release. See How we checked it.

What is the Fed balance sheet?

The assets the central bank owns — overwhelmingly US Treasuries and agency mortgage-backed securities acquired through open-market operations — with bank reserves and currency as the matching liabilities. Before 2008 it was plumbing nobody charted: $0.91T the week the Lehman month began. Three crisis eras later it is a first-order macro object at $6.75T, roughly 7 times its pre-crisis size — and the subject of more market folklore than any series this side of the yield curve.

The latest reading

The August 19, 2026 report shows $6.75T, up 1.9% from a year earlier — 27% below the $8.97T record of April 13, 2022, and just above the $6.54T runoff low of December 3, 2025. Quantitative tightening has ended; the sheet is drifting up again with reserve demand. The live chart with the YoY growth view is on our Fed balance sheet page.

How the number is built

Every Thursday at 4:30pm ET the Fed publishes the H.4.1 statistical release — “Factors Affecting Reserve Balances” — a full weekly balance sheet audited line by line: securities held outright, repos, loans, central-bank swap lines, and the emergency facilities of each crisis era. Our series is total assets (FRED’s WALCL mirror), weekly averages, with each row dated by its initial publication. The New York Fed’s SOMA report provides the security-level holdings underneath. There is no survey, no estimate and no revision cycle to speak of — this is one of the few macro series that is simply an accounting fact.

The eras — QE to the record to QT

Read as flows: QE1 through QE3 added ~$3.59T over six years; the COVID response added ~$4.81T in twenty-six months — five times the entire pre-2008 balance sheet; and the 2022–2025 runoff removed $2.43T over three and a half years, still leaving the sheet 1.6× its pre-COVID size. Expansion is fast and event-driven; contraction is slow and scheduled. That asymmetry is the eras’ one durable lesson.

The largest QT ever — and what stocks did

The folklore said the flood drove the bull market, so the drain would end it. The test came: from the April 13, 2022 peak the Fed ran the largest quantitative tightening in its history — $2.43T, a 27.1% reduction — and over that same stretch SPY rose 73%, setting record after record. One episode is one episode, and QT ran alongside rate cuts in its final stretch — but the strong version of the claim, that equity prices are a function of the balance sheet’s direction, had exactly one large-scale test and failed it. We track the sheet as rates-and-reserves plumbing and as a denominator (margin debt vs M2 sits on the same shelf of liquidity reads), not as an equity timing signal.

Where it will mislead you

Four traps. The level chart proves too much — a series that 9×’d in twenty years makes every overlay look causal; growth rates and eras carry the information. “Liquidity” is doing unpaid work — reserves created by QE are not money in equity accounts, and the transmission to asset prices runs through rates, term premia and risk appetite. There is no pipe. QT doom has a losing record — covered above. And composition matters more than the total — the same headline number can hide very different mixes of Treasuries, MBS and emergency lending; March 2023’s bank-rescue facilities briefly grew the sheet in a way nobody called stimulus. When the total moves, check the H.4.1 lines before narrating.

How we checked it

One committed file: the weekly H.4.1 total-assets series with initial release dates, 2002 to the latest Thursday. Era anchors are fixed calendar dates (the values are computed, never typed); the record, trough and QT arithmetic are simple extrema over the series; the SPY comparison uses our daily closes at the matching dates. Growth rates use the precomputed YoY column. The one thing this page deliberately does not do is estimate “net liquidity” models (balance sheet minus TGA minus RRP) — those are constructions with discretionary terms, and they belong to a different page than an accounting fact.

Frequently asked questions