whatsmovingnow
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Session

Pre-market covers 04:00–09:30 ET, intraday 09:30–16:00, after-hours 16:00–20:00.

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Event type

FIX

Comfort Systems USA, Inc.

November 4, 2026 · pre-market

Rarity
1.35
Peak move
−8.83%
Float cap
$44.6B

Still running — rarity and peak move can only rise from here.

Comfort Systems USA, Inc. provides mechanical and electrical contracting services. Its mechanical segment includes heating, ventilation and air conditioning, plumbing, piping, controls, off-site construction, monitoring and fire protection; its electrical segment installs and services electrical systems. The company primarily serves commercial, industrial and institutional customers, including manufacturing, healthcare, education, office, technology, retail and government facilities.

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What we found

no events · 0 from SEC or newswire · 0 timed with the move
Nothing found.We searched SEC filings, the newswires and the open web across the three days around this move and found no public information that explains it.