joins already-filed data for MFP — no new estimate is computed here · 13F 2026-Q1 · STOCK Act as disclosedⓘ
Held by — the largest institutions (13F filers) reporting a long position in MFP for 2026-Q1. A lagged quarterly snapshot, filed up to 45 days after quarter-end; excludes shorts, options, cash and non-US lines. '% of shares out' uses the filing's cover-page share count, and is hidden when that number can't support it.
In these books — we check a small named set of index/ETF books (listed in that column). A miss means 'not in those books', never 'not in any index'. Each book carries its own as-of date, and update speeds differ (daily to quarterly).
Congress — members with a disclosed trade in MFP (STOCK Act), most recent first, within the returned window (tooltip counts are for that window, not lifetime). Amounts are ranges, not exact values, and reports arrive up to 30–45 days late.
