COMFORT SYSTEMS USA INC (FIX) Institutional Ownership Changes & 13F Activity

COMFORT SYSTEMS USA INC (FIX) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC, Sequoia Financial Advisors, Causeway Capital Management, Third Point, and Polen Capital Management.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Renaissance Technologies LLCBuy2,68056,660$78,133,573
Q1 2026Sequoia Financial AdvisorsSell-2172,900$3,999,195
Q1 2026Causeway Capital ManagementSell-59184$253,734
Q4 2025Third PointSell-95,000105,000$97,995,450
Q4 2025Renaissance Technologies LLCBuy3,58053,980$50,378,994
Q4 2025Sequoia Financial AdvisorsBuy9933,117$2,909,133
Q4 2025Causeway Capital ManagementBuy243243$226,789
Q3 2025Renaissance Technologies LLCSell-79,90050,400$41,589,072
Q3 2025Third PointBuy15,000200,000$165,036,000
Q3 2025Sequoia Financial AdvisorsBuy4332,124$1,752,731
Q2 2025Third PointBuy185,000185,000$99,198,850
Q2 2025Renaissance Technologies LLCSell-900130,300$69,868,163
Q2 2025Sequoia Financial AdvisorsBuy2601,691$906,755
Q1 2025Renaissance Technologies LLCBuy79,900131,200$42,289,696
Q1 2025Polen Capital ManagementBuy1,1661,166$375,837
Q1 2025Sequoia Financial AdvisorsBuy181,431$461,262
Q4 2024Renaissance Technologies LLCSell-42,70051,300$21,754,278
Q4 2024Sequoia Financial AdvisorsSell-911,413$599,206
Q3 2024Renaissance Technologies LLCBuy60,20094,000$36,692,900
Q3 2024Sequoia Financial AdvisorsBuy771,504$587,087
Q2 2024Renaissance Technologies LLCBuy11,80033,800$10,279,256
Q2 2024Sequoia Financial AdvisorsSell-111,427$433,980
Q1 2024Renaissance Technologies LLCSell-14,60022,000$6,990
Q1 2024Sequoia Financial AdvisorsSell-1021,438$456,867
Q4 2023Renaissance Technologies LLCBuy12,60036,600$7,528
Q4 2023Third Avenue ManagementSell-6,27019,434$3,996,991
Q4 2023Sequoia Financial AdvisorsSell-1921,540$316,732
Q3 2023Sequoia Financial AdvisorsBuy491,732$295,151
Q2 2023Renaissance Technologies LLCSell-77,20024,000$3,941
Q2 2023Third Avenue ManagementSell-3,19825,704$4,220,597

Frequently asked questions about FIX activity

  • Which institutional owners are buying FIX?

    Institutional owners buying FIX include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in FIX activity?

    "Buy" means an investor increased their reported position in FIX compared to the prior reporting period. This reflects growing exposure to COMFORT SYSTEMS USA INC (FIX) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in FIX increasing?

    Institutional interest in FIX can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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