According to the Statements of Account released today for end‑May 2026, the Bank of Japan's total assets stood at ¥664.4 trillion and JGS holdings at ¥533.1 trillion. JGS holdings rose ¥1.2 trillion (11,867億円) month‑on‑month, but the 12‑month cumulative change shows a ¥47.6 trillion decline, indicating an acceleration in passive QT (quantitative tightening) from the prior month's ¥46.3 trillion. The share of current account balances in total assets fell to 68.0%, signaling a continued shift in liquidity structure.
Flash: QT flow analysis — monthly increase, but annual pace accelerates
Per the BOJ Statements of Account, JGS holdings at end‑May 2026 were ¥533.1 trillion, up ¥1.2 trillion (11,867億円) from the prior month. This monthly increase is roughly the same as April 2026's ¥1.1 trillion (10,793億円) rise and suggests stability in JGS flows in a normal month after quarter‑end effects have faded.
Total assets were ¥664.4 trillion, up ¥1.1 trillion (11,097億円) month‑on‑month. The near‑equivalence between the monthly increase in JGS and the rise in total assets implies limited movement in other asset categories. Indeed, loans outstanding were unchanged at ¥77.7 trillion, and ETFs declined only slightly to ¥37.1 trillion (a ¥23.5 billion decrease from the prior month).
Crucially, while monthly flows show small increases, the annual QT pace measured by the 12‑month cumulative change is accelerating. The 12‑month cumulative decline in JGS holdings reached ¥47.6 trillion at end‑May 2026, expanding by ¥1.3 trillion from ¥46.3 trillion the prior month. This shift reflects the fact that the large decline in March 2025 (‑¥12.6 trillion) has dropped out of the 12‑month window while the modest May 2026 increase (+¥1.2 trillion) has been added. The numerical evidence confirms the structural progression of passive QT.
Flash: stock analysis — JGS share stable at 80.2%, policy assets 6.0%
On the asset composition front, the JGS share of total assets was 80.2%, unchanged from the prior month. This level continues the trend of JGS dominance established since September 2025 and shows no structural change in the centrality of JGS on the balance sheet.
Policy assets (ETF + J‑REIT + corporate bonds) totaled ¥39.6 trillion, remaining at 6.0% of total assets. The breakdown was: ETFs ¥37.1 trillion (5.6%), J‑REITs ¥0.7 trillion, and corporate bonds ¥1.9 trillion (0.3%). The ETF decline of ¥23.5 billion from the prior month likely reflects maturities and mark‑to‑market effects. The policy asset ratio has held at 6.0% for five consecutive months since December 2025, suggesting that the pace of total asset contraction and the pace of decline in policy assets are roughly balanced.