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SIMPLEX TRADING, LLC

Position in FIX — Comfort Systems USA Inc

CIK 1488542 CHICAGO, IL

Position in FIX

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$2,542,841
+$2,009,172 QoQ
Shares Held
1,283
+231.5% QoQ
Ownership
0.004%
of shares outstanding
% of Portfolio
0.08%
of 13F equity value
Holder Rank
#564
of 1,341 holders
Holding Since
Mar 2020
23 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 Jun 30, 2026

SIMPLEX TRADING, LLC holds $9,341,034 across 17 Engineering & Construction names. FIX ranks #2 (27.2% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 FIX
Comfort Systems USA Inc
This page
1,283 $2,542,841

All Filings in FIX

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23 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $2,542,841 1,283
2026-03-31 $533,669 387
2025-12-31 $2,182,032 2,338
2025-09-30 $839,208 1,017
2025-06-30 $314,219 586
2025-03-31 $601,790 1,867
2024-12-31 $457,984 1,080
2024-09-30 $608,946 1,560
2024-06-30 $360,990 1,187
2024-03-31 $393,007 1,237
2023-09-30 $41,580 244
2023-06-30 $41,542 253
2023-03-31 $157,052 1,076
2022-12-31 $322,799 2,805
2022-09-30 $101,612 1,044
2022-03-31 $979 11
2021-12-31 $107,152 1,083
2021-09-30 $15,904 223
2021-06-30 $17,570 223
2021-03-31 $110,435 1,477
2020-12-31 $72,091 1,369
2020-06-30 $5,460 134
2020-03-31 $28,216 772