Position in BLDR
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$6,514,144
+$6,174,644 QoQ
Shares Held
72,800
+2500.0% QoQ
Ownership
0.068%
of shares outstanding
% of Portfolio
0.24%
of 13F equity value
Holder Rank
#149
of 662 holders
Holding Since
Mar 2022
5 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in BLDR Over Time
Shares Held
Position Value (USD)
Derivatives in BLDR
reported options exposure · as of Jun 30, 2026CallValue
$8,948,000
CallShares
100,000
PutValue
$0
PutShares
0
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Building Products & Equipment
Industrials · as of Jun 30, 2026CastleKnight Management LP holds $37,321,658 across 8 Building Products & Equipment names. BLDR ranks #2 (17.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | LMB |
Limbach Holdings, Inc.
|
120,500 | $9,278,500 | |
| 2 | BLDR |
Builders FirstSource, Inc.
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|
72,800 | $6,514,144 | |
| 3 | NX |
Quanex Building Products CORP
|
320,640 | $5,970,316 | |
| 4 | ROCK |
Gibraltar Industries, Inc.
|
122,500 | $5,524,750 | |
| 5 | OC |
Owens Corning
|
29,600 | $4,705,216 | |
| 6 | APOG |
Apogee Enterprises, Inc.
|
81,046 | $3,707,044 | |
| 7 | CSL |
Carlisle Companies Inc
|
2,700 | $979,425 | |
| 8 | TREX |
Trex Co Inc
|
12,835 | $642,263 |
All Filings in BLDR
Export CSV
7 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $8,948,000 | 100,000 | Call | Sole | 2026-08-14 | |
| 2026-06-30 | $6,514,144 | 72,800 | Shares | Sole | 2026-08-14 | |
| 2025-09-30 | $339,500 | 2,800 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $326,732 | 2,800 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $1,249,400 | 10,000 | Call | Sole | 2025-05-15 | |
| 2025-03-31 | $349,832 | 2,800 | Shares | Sole | 2025-05-15 | |
| 2022-03-31 | $2,220,176 | 34,400 | Shares | Sole | 2022-05-16 | |
| No filing history on record for this holder in this stock. | ||||||