Tom Russo runs Gardner Russo & Quinn, an asset manager overseeing $9.26B in disclosed equity holdings (SEC CIK 0000860643). The latest portfolio (2025Q4) discloses 87 positions across 10 sectors, with the largest positions in GOOG, BRK.A and MA. On a mark-to-market basis the tracked portfolio has returned 26.8% since 2024Q1. OpenStocks tracks 8 consecutive quarterly snapshots for this manager — every position change, new entry, and exit is logged below.