key definitions
- QE
- large-scale asset purchases that expand the central bank balance sheet and create reserves.
- QT
- quantitative tightening — shrinking the balance sheet by letting securities roll off or selling them.
- RRP
- overnight reverse repo facility — a release valve for excess cash in the system.
- reserves
- bank deposits at the Fed — foundational settlement liquidity.
reserves can be ample yet localized — stress appears in plumbing, not headlines.
Treasury issuance and QT interact: more duration supply can drain liquidity even if rates stable.
pre-GFC flat footprint
balance sheet was small; private credit growth did the heavy lifting.
- fedrates policy dominated.
- creditshadow banking grew.
equity cycles ran on private leverage more than reserve abundance.
Fed assets stayed well below a trillion.
Fed H.4.1
2008 to 2012 surge
QE absorbs risk the private sector cannot hold.
- fedasset purchases and swaps.
- marketfunction restored slowly.
when private market makers step back, the central bank becomes marginal price setter.
balance sheet jumped into the multi-trillion range.
Fed
2013 to 2019 taper and roll
taper tantrum, then slow growth of sheet; repo spike in 2019.
- fedtaper then gradual unwind.
- fundingsept 2019 repo stress.
QT at wrong pace versus bill supply can break calm markets.
assets drifted lower before 2020 shock.
NY Fed
2020 liquidity shock
violent expansion to backstop markets and facilitate transfers.
- fedmassive buys.
- fiscaltransfers drained into balances.
liquidity fixes price; solvency still needs earnings.
balance sheet stepped up sharply.
Fed
2022 to 2026 QT
inflation mandate drove hikes plus balance-sheet runoff.
- fedQT resumes tightening beyond rates.
- treasuryheavy coupon supply.
reserve scarcity shows up in money markets before equities admit it.
assets rolled off from peaks but stayed historically large.
Fed
update with official H.4.1 — stylized series here illustrate regime shifts only.
watch TGA swings and bill issuance — fiscal can dominate short-term liquidity.