Managers / Q4 2023 · view latest →
BRIGHTLINE CAPITAL MANAGEMENT, LLC
CIK 0001432450 · 2 S. BISCAYNE BOULEVARD, SUITE 2580, MIAMI, FL, 33131 · 305-423-0834
Summary
Brightline Capital Management, LLC reported $92M in U.S.-listed holdings across 10 positions for Q4 2023.
Its largest position, MBC, represents 15.5% of the portfolio.
Compared with Q3 2023, the fund opened 8 new positions and exited 2.
Portfolio Metrics
Methodology: turnover is min(value bought, value sold) ÷ average reported value across the two quarters — value-based, so market moves inflate it slightly versus a share-based measure. Concentration and largest position are shares of the filing’s total reported value, options excluded. New/exited counts compare against the prior filed quarter. All figures derive solely from the fund’s 13F filings.
Reported Value by Quarter
Portfolio Composition
- Common Stock · 80.3% · $74M
- Other · 19.7% · $18M
Quarter-over-Quarter Changes full breakdown →
vs Q3 2023 (amended baseline)
| Issuer | Move | Share Δ | Shares now | Value Δ | Value now |
|---|---|---|---|---|---|
| BLDRBUILDERS FIRSTSOURCE INC | NEW | +73.0K | 73.0K | +$12M | $12M |
| OCOWENS CORNING NEW | NEW | +73.0K | 73.0K | +$11M | $11M |
| BZHBEAZER HOMES USA INC | NEW | +300.0K | 300.0K | +$10M | $10M |
| ARDAGH METAL PACKAGING S A | NEW | +2.23M | 2.23M | +$9M | $9M |
| BECNUSDBEACON ROOFING SUPPLY INC | NEW | +96.0K | 96.0K | +$8M | $8M |
| REXREX AMERICAN RES CORP | NEW | +168.0K | 168.0K | +$8M | $8M |
| BLBDBLUE BIRD CORP | NEW | +270.0K | 270.0K | +$7M | $7M |
| OSG1EUROVERSEAS SHIPHOLDING GROUP I | NEW | +560.0K | 560.0K | +$3M | $3M |
Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.
Holdings — Q4 2023
| # | Issuer | Class | % Portfolio | Value ↓ | Shares |
|---|---|---|---|---|---|
| 1 | MBCMASTERBRAND INChistory → | COMMON STOCK | 15.51% | $14M | 963.0K |
| 2 | BLDRBUILDERS FIRSTSOURCE INChistory → | COM | 13.22% | $12M | 73.0K |
| 3 | OCOWENS CORNING NEWhistory → | COM | 11.74% | $11M | 73.0K |
| 4 | BZHBEAZER HOMES USA INChistory → | COM NEW | 11.00% | $10M | 300.0K |
| 5 | CONSTELLIUM SE | CL A SHS | 10.44% | $10M | 482.0K |
| 6 | ARDAGH METAL PACKAGING S A | SHS | 9.31% | $9M | 2.23M |
| 7 | BECNUSDBEACON ROOFING SUPPLY INChistory → | COM | 9.06% | $8M | 96.0K |
| 8 | REXREX AMERICAN RES CORPhistory → | COM | 8.62% | $8M | 168.0K |
| 9 | BLBDBLUE BIRD CORPhistory → | COM | 7.90% | $7M | 270.0K |
| 10 | OSG1EUROVERSEAS SHIPHOLDING GROUP Ihistory → | CL A NEW | 3.20% | $3M | 560.0K |
Filing History
| Quarter | Reported Value | Positions | Filed | Type | Links |
|---|---|---|---|---|---|
| Q1 2026 | $338M | 9 | May 15, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q4 2025 | $247M | 8 | Feb 13, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q3 2025 | $244M | 10 | Nov 13, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q2 2025 | $232M | 15 | Aug 14, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q1 2025 | $115M | 12 | May 14, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q4 2024 | $146M | 13 | Feb 13, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q3 2024 | $237M | 20 | Nov 13, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q2 2024 | $201M | 19 | Aug 13, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q1 2024 | $166M | 15 | May 14, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q4 2023 | $92M | 10 | Feb 14, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q3 2023 | $24M | 4 | Oct 31, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q2 2023 | $9M | 1 | Aug 11, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q1 2023 | $0 | 1 | May 5, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q4 2022 | $45M | 5 | Feb 3, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q3 2022 | $50M | 5 | Nov 9, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q2 2022 | $43M | 4 | Aug 3, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q1 2022 | $143M | 9 | May 12, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q4 2021 | $163M | 13 | Feb 7, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q3 2021 | $140M | 12 | Nov 8, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q2 2021 | $149M | 11 | Aug 9, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q1 2021 | $148M | 13 | May 12, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q4 2020 | $132M | 15 | Feb 9, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q3 2020 | Under review | 11 | Nov 10, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q2 2020 | $26.4B | 6 | Aug 4, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q1 2020 | $0 | 1 | May 5, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q4 2019 | Under review | 10 | Feb 6, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q3 2019 | Under review | 13 | Nov 12, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q2 2019 | $95M | 11 | Aug 12, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q1 2019 | $63M | 11 | May 9, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q4 2018 | $18M | 2 | Feb 8, 2019 | 13F-HR | changes · EDGAR ↗ |
13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.