CIK: 0001819275
Total reported value
$23.0M
Reporting period: 2026-03-31 · Number of holdings: 21
BCK CAPITAL MANAGEMENT LP disclosed 21 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $23.0M and a quarterly turnover rate of 91.8%.
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Bck Capital Management LP's disclosed holdings carry a Herfindahl concentration index of 0.112 — mathematically equivalent to about 9 equally-sized positions, well below its 21 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 1.19), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
Recent activity leans toward initiating meaningfully larger new positions than it adds to existing ones (a 2.7 percentage-point tilt) — a pattern consistent with a more contrarian, new-idea-driven approach.
Sector classification currently covers about 31% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Trim ACI
-92.8% -$4.8M
Trim G98659116
0.0% -$7.6K
Add G63212107
0.0% $42.7K
Trim G1827K107
0.0% $34.9K
Sold out CCIX
New buy WBD
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | ✓ | M3brigade Acquisition V CORP | Stock-Other | 18.15% | +0.01% | — | |
| 2 | ✓ | Cantor Equity Partners I INC | Stock-Other | 17.75% | -0.01% | — | |
| 3 | ✓ | Yorkville Acquisition CORP. S | Stock-Other | 16.69% | -0.20% | — | |
| 4 | WBD | Warner Bros Discovery INC | Stock-Comm Services | 8.13% | +8.13% | NEW | |
| 5 | EA | Electronic Arts INC | Stock-Comm Services | 6.22% | +6.22% | NEW | |
| 6 | GTLS | Chart Industries INC | Stock-Industrials | 4.95% | +4.95% | NEW | |
| 7 | HO1 | Hologic INC | Stock-Other | 4.61% | +4.61% | NEW | |
| 8 | JHG | Janus Henderson Group plc | Stock-Financials | 3.84% | +3.84% | NEW | |
| 9 | ACLXGBX | Arcellx INC | Stock-Other | 2.00% | +2.00% | NEW | |
| 10 | AES | Aes CORP | Stock-Utilities | 1.84% | +1.84% | NEW | |
| 11 | SDA | Sealed Air CORP | Stock-Consumer Disc | 1.83% | +1.83% | NEW | |
| 12 | UNF | Unifirst Corp/ma | Stock-Other | 1.75% | +1.75% | NEW | |
| 13 | ACI | Albertsons Cos INC - Class A | Stock-Consumer Staples | 1.61% | -21.03% | -92.75% | |
| 14 | APLSUSD | Apellis Pharmaceuticals INC | Stock-Other | 1.40% | +1.40% | NEW | |
| 15 | IMXI | International Money Express | Stock-Other | 1.38% | +1.38% | NEW | |
| 16 | DBRG | Digitalbridge Group INC | Stock-Financials | 1.34% | +1.34% | NEW | |
| 17 | T86 | Tri Pointe Homes INC | Stock-Other | 1.32% | +1.32% | NEW | |
| 18 | NATH | Nathan's Famous INC | Stock-Other | 1.32% | +1.32% | NEW | |
| 19 | ONTF | On24 INC | Stock-Other | 1.31% | +1.31% | NEW | |
| 20 | CWAN | Clearwater Analytics Holdings, Inc. | Stock-Tech | 1.29% | +1.29% | NEW | |
| 21 | AM6 | Amicus Therapeutics INC | Stock-Other | 1.26% | +1.26% | NEW |
Performance for Q3 2026
—
Performance Last 4 Quarters
—
Based on 0 months of available history
Based on 20% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 21 | $23.0M | 92 | 1G632122G1827K3G98659 |
| 2025-12-31 | 7 | $22.7M | 100 | |
| 2025-09-30 | 93 | $94.0M | 100 | |
| 2025-06-30 | 84 | $115.9M | 0 | |
| 2025-03-31 | 72 | $128.7M | 100 | |
| 2024-12-31 | 70 | $138.2M | 0 | |
| 2024-09-30 | 83 | $167.2M | 0 | |
| 2024-06-30 | 94 | $155.0M | 0 | |
| 2024-03-31 | 91 | $147.3M | 0 | |
| 2023-12-31 | 94 | $102.0M | 0 | |
| 2023-09-30 | 100 | $196.6M | 0 | |
| 2023-06-30 | 82 | $131.0M | 0 | |
| 2023-03-31 | 86 | $115.0M | 0 | |
| 2022-12-31 | 90 | $97.2M | 0 | |
| 2022-09-30 | 106 | $139.3M | 0 | |
| 2022-06-30 | 113 | $128.9M | 0 | |
| 2022-03-31 | 153 | $166.8M | 0 | |
| 2021-12-31 | 132 | $148.5M | 0 | |
| 2021-09-30 | 146 | $167.4M | 0 | |
| 2021-06-30 | 143 | $199.7M | 100 | |
| 2021-03-31 | 142 | $181.9M | 100 | |
| 2020-12-31 | 62 | $125.1M | — |
Bck Capital Management LP's most significant position changes for 2026-03-31: Sold out: Churchill Capital Corp IX (CCIX); New buy: Warner Bros Discovery INC (WBD); Sold out: ; New buy: Electronic Arts INC (EA); New buy: Chart Industries INC (GTLS).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | ✓ | M3brigade Acquisition V CORP | 0% | — | Unchanged |
| 2 | ✓ | Cantor Equity Partners I INC | 0% | — | Unchanged |
| 3 | ✓ | Yorkville Acquisition CORP. S | -0.2% | — | Unchanged |
| 4 | ACI | Albertsons Cos INC - Class A | -21% | -92.75% | Trim |
| 5 | CCIX | Churchill Capital Corp IX | — | EXIT | Sold out |
| 6 | WBD | Warner Bros Discovery INC | — | NEW | New buy |
| 7 | ✓ | — | EXIT | Sold out | |
| 8 | EA | Electronic Arts INC | — | NEW | New buy |
| 9 | GTLS | Chart Industries INC | — | NEW | New buy |
| 10 | HO1 | Hologic INC | — | NEW | New buy |
| 11 | JHG | Janus Henderson Group plc | — | NEW | New buy |
| 12 | ACLXGBX | Arcellx INC | — | NEW | New buy |
| 13 | AES | Aes CORP | — | NEW | New buy |
| 14 | SDA | Sealed Air CORP | — | NEW | New buy |
| 15 | UNF | Unifirst Corp/ma | — | NEW | New buy |
| 16 | APLSUSD | Apellis Pharmaceuticals INC | — | NEW | New buy |
| 17 | IMXI | International Money Express | — | NEW | New buy |
| 18 | DBRG | Digitalbridge Group INC | — | NEW | New buy |
| 19 | T86 | Tri Pointe Homes INC | — | NEW | New buy |
| 20 | NATH | Nathan's Famous INC | — | NEW | New buy |
| 21 | ONTF | On24 INC | — | NEW | New buy |
| 22 | CWAN | Clearwater Analytics Holdings, Inc. | — | NEW | New buy |
| 23 | AM6 | Amicus Therapeutics INC | — | NEW | New buy |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-01 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-11 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-10 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-07 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-08 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-18 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-07 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-08 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-08 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-06 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-08 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-11 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-12 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-09 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-08 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-08 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-05 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-07 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-09 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-07-20 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-06 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-11 | 13F-HR | View on EDGAR |
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