Boundary Creek Advisors LP
In its 13F for Q4 2024 (holdings as of December 31, 2024, filed February 11, 2025), Boundary Creek Advisors LP reported 11 stock positions worth $149.4 million. Its top holding was Mercer International (MERC) at 18.4% of the portfolio, followed by Mativ (MATV, 16.9%) and Knight-Swift Transportation (KNX, 15.5%). Compared with Q3 2024, it opened 3 new positions, sold out of 1, added to 1 and reduced 7. The biggest buy was a new position in Constellation Energy (CEG) and the biggest sale Mativ (MATV, shares −1%).
- Most Recent 13F
- Q2 2026
- Location
- TUCKAHOE, NY
- CIK
- 0001771944
- Portfolio Value
- $149.4M (Q4 2024)
- SEC Filing
- 0001771944-25-000001 ↗ filed Feb 11, 2025
Holdings Value
Holdings 11 stocks · $149.4M
| MERC Mercer International Inc. | 18.43% | 4,236,054 | $27.5M | Reduce -1.3% |
| MATV Mativ Holdings Inc. | 16.94% | 2,321,405 | $25.3M | Reduce -0.9% |
| KNX Knight-Swift Transportation | 15.54% | 437,664 | $23.2M | Add +66.1% |
| SLSR Solaris Resources Inc. | 14.92% | 7,185,900 | $22.3M | Reduce -0.6% |
| LEU Centrus Energy Corp. Class A | 9.76% | 218,818 | $14.6M | Reduce -33.1% |
| CEG Constellation Energy | 8.99% | 60,000 | $13.4M | New |
| VLO Valero Energy Corp. | 7.39% | 90,000 | $11.0M | New |
| AMBP Ardagh Metal Packaging SA | 3.45% | 1,709,635 | $5.1M | Reduce -53.6% |
| UIS Unisys Corp. | 2.16% | 510,321 | $3.2M | Reduce -66.4% |
| VST Vistra Corp. | 1.85% | 20,000 | $2.8M | New |
| URBAN ONE INC | 0.58% | 863,826 | $860K | Reduce -37.9% |
Options reported separately and not counted above: HYG puts ($353.9M), SPY puts ($351.6M), IWM puts ($221.0M), XLI puts ($131.8M), MPT puts ($69.6M), GL puts ($63.9M), KNX calls ($56.3M), CCL puts ($24.9M), VST calls ($20.7M), MATV calls ($20.0M), ABR puts ($15.6M), OPTU calls ($13.0M), and 7 more.
Other holdings (2): bonds, preferreds, convertibles and warrants · $6.2M (not counted above)
Total filed on the 13F, all lines: $155.6M.
Portfolio Sells Q3 2024 → Q4 2024
| MATV Mativ Holdings Inc. | Reduce -0.9% | 16.94% | −9.13 |
| OPTU Optimum Communications Inc. Class A | Sold out | 0.00% | −5.84 |
| AMBP Ardagh Metal Packaging SA | Reduce -53.6% | 3.45% | −5.66 |
| UIS Unisys Corp. | Reduce -66.4% | 2.16% | −3.49 |
| LEU Centrus Energy Corp. Class A | Reduce -33.1% | 9.76% | −1.99 |
| MERC Mercer International Inc. | Reduce -1.3% | 18.43% | −0.59 |
| URBAN ONE INC | Reduce -37.9% | 0.58% | −0.44 |
| SLSR Solaris Resources Inc. | Reduce -0.6% | 14.92% | +2.68 |
Portfolio Buys Q3 2024 → Q4 2024
Options Activity Q3 2024 → Q4 2024
| HYG Ishr Ibx Usd Hiyld CB ETF-Ui | put | Add +80.0% | 4,500,000 | $353.9M |
| SPY SS SPDR S&P 500 ETF Trust-US | put | Reduce -25.0% | 600,000 | $351.6M |
| XLI SS Industrial Select Sector | put | New | 1,000,000 | $131.8M |
| MPT Medical Properties Trust Inc. | put | Add +79.1% | 17,612,000 | $69.6M |
| GL Globe Life Inc. | put | New | 572,900 | $63.9M |
| KNX Knight-Swift Transportation | call | New | 1,061,300 | $56.3M |
| CCL Carnival Corp. | put | Reduce -66.7% | 1,000,000 | $24.9M |
| VST Vistra Corp. | call | Reduce -50.0% | 150,000 | $20.7M |
| ABR Arbor Realty Trust Inc. | put | Add +12.4% | 1,124,300 | $15.6M |
| LEU Centrus Energy Corp. Class A | call | Sold out | 252,100 | $13.8Mbefore exit |
| OPTU Optimum Communications Inc. Class A | call | Reduce -4.4% | 5,405,500 | $13.0M |
| CRK Comstock Resources Inc. | put | New | 500,000 | $9.1M |
| AAL American Airlines Group Inc. | put | Reduce -66.7% | 500,000 | $8.7M |
| DAN Dana Inc. | call | New | 532,500 | $6.2M |
| JBLU Jetblue Airways Corp. | put | New | 500,000 | $3.9M |
Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.
Notes & Other Activity Q3 2024 → Q4 2024
| WOLF Wolfspeed Inc. (wolf 1.875 12/01/29) | NOTE 1.875%12/0 · principal | Reduce -25.6% | 14,500,000 | $6.2M |
Bonds, preferreds, convertibles and warrants; not part of the stock holdings or percentages above.
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 0 | $0 | |
| Q1 2026 | 1 | $15.3M | GBTG |
| Q4 2025 | 1 | $20.9M | GBTG |
| Q3 2025 | 1 | $22.9M | GBTG |
| Q2 2025 | 3 | $39.9M | SLSR, MATV, MERC |
| Q1 2025 | 11 | $109.7M | SLSR, MERC, KNX, MATV, LEU |
| Q4 2024 | 11 | $149.4M | MERC, MATV, KNX, SLSR, LEU |
| Q3 2024 | 9 | $152.7M | MATV, MERC, SLSR, LEU, KNX |
| Q2 2024 | 16 | $203.0M | MATV, MERC, KNX, AMBP, SLSR |
| Q1 2024 | 11 | $146.8M | MATV, MERC, BRSL, AMBP, KNX |