CookieStocks
FIX +7.0%: an unusually large move for this stock. COMFORT SYSTEMS USA INC moved 5.8 points more than its sector, on 0.8× its usual volume.

2026-10-06 · FIX

FIX +7.0%: an unusually large move for this stock

COMFORT SYSTEMS USA INC moved 5.8 points more than its sector, on 0.8× its usual volume.

The story in plain words

Tuesday, October 6, 2026. FIX +7.0%: an unusually large move for this stock. COMFORT SYSTEMS USA INC moved 5.8 points more than its sector, on 0.8× its usual volume.

What the data shows for Comfort Systems USA (FIX): FIX +7.0% today. Its sector fund (XLI) +1.2% today. S&P 500 (SPY) +0.6% today.

Worked out from that data: 5.8 points more than its sector. Volume 0.8× its 20-day average. Bigger than 94% of its daily moves over the past 250 trading days.

Possible contributors. These line up in time with the move; they are not confirmed causes: News: “Which S&P500 stocks are moving on Tuesday?” (Published around the move. Timing only, not a confirmed cause). News: “Comfort Systems USA (NYSE:FIX) Delivers High Growth and Strengthening Fundamentals” (Published around the move. Timing only, not a confirmed cause).

About the company: Comfort Systems USA trades as FIX and is part of the S&P 500, in the Industrials sector (Construction & Engineering), headquartered in Houston, Texas, founded in 1997.

This is one of CookieStocks’ daily stock stories about unusually large one-day price moves in S&P 500 stocks, measured against each stock’s own history, its sector and its usual volume. Stories are found automatically each trading day from market data and SEC filings, and every claim is labelled as observed, calculated or a possible contributor. Statistics only, not investment advice.

Prove it

Every claim on the graphic, labelled: observed (straight from the data), calculated (worked out from it), or possible contributor (lines up in time, not a confirmed cause).

  • OBSERVED
    FIX +7.0% todayOct 6, 2026, 1:35 PM ET
  • OBSERVED
    Its sector fund (XLI) +1.2% todayOct 6, 2026, 1:35 PM ET
  • CALCULATED
    5.8 points more than its sectorHow: stock return − sector fund return · Oct 6, 2026, 1:35 PM ET
  • OBSERVED
    S&P 500 (SPY) +0.6% todayOct 6, 2026, 1:35 PM ET
  • CALCULATED
    Volume 0.8× its 20-day averageHow: today’s volume ÷ average of the last 20 days · Oct 6, 2026, 1:35 PM ET
  • CALCULATED
    Bigger than 94% of its daily moves over the past 250 trading daysHow: share of past daily moves smaller in size · Oct 6, 2026, 1:35 PM ET
  • POSSIBLE CONTRIBUTOR
    News: “Which S&P500 stocks are moving on Tuesday?”Published around the move. Timing only, not a confirmed cause. · Oct 6, 2026, 12:35 PM ET
  • POSSIBLE CONTRIBUTOR
    News: “Comfort Systems USA (NYSE:FIX) Delivers High Growth and Strengthening Fundamentals”Published around the move. Timing only, not a confirmed cause. · Oct 6, 2026, 4:21 AM ET

Comfort Systems USA (FIX) financials and filings →

More stories

Statistics only, not investment advice. Past moves don’t predict future ones. Data as of Oct 6, 2026, 1:35 PM ET.