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GROUP ONE TRADING LLC

Position in FIX — Comfort Systems USA Inc

CIK 932540 CHICAGO, IL

Position in FIX

as of Mar 31, 2026 · filed May 13, 2026
Position Value
$64,812
+$33,081 QoQ
Shares Held
47
+38.2% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Sep 2022
3 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in FIX Over Time

Shares Held

Position Value (USD)

Position in Engineering & Construction

Industrials · as of Mar 31, 2026

GROUP ONE TRADING LLC holds $3,338,279 across 11 Engineering & Construction names. FIX ranks #6 (1.9% of the industry book) .

# Ticker Company Shares Value (USD) Open
6 FIX
Comfort Systems USA Inc
This page
47 $64,812

All Filings in FIX

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3 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $64,812 47
2025-12-31 $31,731 34
2022-09-30 $77,864 800