Comfort Systems USA INC Schedule 13G passive stakes

FMR LLC and Abigail P. Johnson have jointly filed a Schedule 13G, reporting beneficial ownership of 1,449,518 shares of Comfort Systems USA Inc. common stock, representing 4.1% of the class.

Vanguard Capital Management has reported beneficial ownership of 7.49% of Comfort Systems USA Inc.'s common stock as of March 31, 2026.

Vanguard Portfolio Management has reported beneficial ownership of 5.37% of Comfort Systems USA's common stock as of March 31, 2026.

The Vanguard Group has reported a 0% beneficial ownership in Comfort Systems USA Inc. following an internal realignment.

The Vanguard Group reports a 12.21% beneficial ownership in Comfort Systems USA Inc., totaling 4,309,811 common shares, with an internal realignment impacting future reporting.

BlackRock, Inc. has reported an 8.3% beneficial ownership stake in Comfort Systems USA Inc., holding 2,917,000 common shares as of December 31, 2025.

BlackRock, Inc. has reported an aggregate beneficial ownership of 10.8% of Comfort Systems USA Inc.'s common stock, totaling 3,803,901 shares.

Capital World Investors has reported a 5.1% beneficial ownership stake in Comfort Systems USA, Inc., holding 1,799,310 shares of common stock.

FMR LLC and Abigail P. Johnson have disclosed a beneficial ownership of 5.4% in Comfort Systems USA Inc. common stock.

BlackRock, Inc. has filed an Amendment No. 3 to Schedule 13G, reporting a 9.4% beneficial ownership stake in Comfort Systems USA Inc. as of March 31, 2025.