Why Comfort Systems USA, Inc. (FIX) stock fell 15.1% on Wednesday, November 4, 2026

Comfort Systems USA, Inc. (FIX) closed at $1,091.31, down 15.08% on Wednesday, November 4, 2026, on volume of 1,686,211 shares (4.0× its 3-month average); market value about $38.40B.

What happened: primary sources

Events Nexqual found for FIX on Wednesday, November 4, 2026 or the trading day before (November 3, 2026):

• Nov 4, 2026: One of 7 Engineering & Construction stocks among the day's biggest losers (ECG, STRL, LGN, IESC, AGX, MTZ, FIX), with no comparable group among the biggest gainers

These are listed as context. A filing or rating change on the same day is not proof that it caused the move; read the source.

More on FIX

FIX stock page: price, SEC financials, insider trades, superinvestor holders, analyst estimates and options. Other big moves that day: November 4, 2026.

Sources: SEC EDGAR, Nexqual Earnings Flash, analyst rating changes, Nexqual market data. Built November 10, 2026 at 16:45 UTC. Not investment advice.

Data source: Nexqual. Last updated: November 10, 2026 at 16:45 UTC. This page is informational and not investment advice.

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