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GROUP ONE TRADING LLC

Position in BLDR — Builders FirstSource, Inc.

CIK 932540 CHICAGO, IL

Position in BLDR

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$2,066,451
+$44,344 QoQ
Shares Held
23,094
-6.0% QoQ
Ownership
0.021%
of shares outstanding
% of Portfolio
0.07%
of 13F equity value
Holder Rank
#237
of 666 holders
Holding Since
Jun 2020
11 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in BLDR Over Time

Shares Held

Position Value (USD)

Position in Building Products & Equipment

Industrials · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $5,585,908 across 10 Building Products & Equipment names. BLDR ranks #1 (37.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 BLDR
Builders FirstSource, Inc.
This page
23,094 $2,066,451

All Filings in BLDR

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11 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $2,066,451 23,094
2026-03-31 $2,022,107 24,561
2025-12-31 $1,609,096 15,639
2025-09-30 $2,716,485 22,404
2025-06-30 $2,820,397 24,170
2023-03-31 $841,900 9,483
2022-09-30 $487,150 8,268
2022-03-31 $1,478,740 22,912
2021-06-30 $3,630,067 85,093
2021-03-31 $2,151,104 46,390
2020-06-30 $132,935 6,422