Wellington Management, an asset manager overseeing $570.66B in disclosed equity holdings (SEC CIK 0000902219). The latest portfolio (2025Q4) discloses 1874 positions across 11 sectors, with the largest positions in NVDA, MSFT and AAPL. On a mark-to-market basis the tracked portfolio has returned 133.6% since 2016Q1. OpenStocks tracks 40 consecutive quarterly snapshots for this manager — every position change, new entry, and exit is logged below.
Methodology:TWR tiles chain-link quarterly mark-to-market across consecutive filings (GIPS-compliant) ·actual tiles use a real 13F snapshot marked to today ·backtest tiles re-price the current book to historical prices.
Performance overview
We mark Wellington Management's disclosed portfolio to current market prices and compare its growth against the S&P 500 (SPY). Wellington's portfolio is 133.6% since 2016Q1.
Portfolio growth vs SPY
Rebased to 100 at 2016Q1 · through 2025Q4
Wellington Management
+238.2%
SPY
—
Portfolio line is the GIPS-compliant time-weighted return chain-linked across the manager's quarterly 13F filings — unaffected by capital flows. Quarters with insufficient held-through coverage are skipped, which can briefly flatten the line.