BCK Capital Management LP In its 13F for Q3 2024 (holdings as of September 30, 2024, filed November 7, 2024), BCK Capital Management LP reported 62 stock positions worth $166.8 million . Its top holding was Endeavor Group Hold Class A (EDR) at 25.2% of the portfolio, followed by Sirius XM (SIRI, 7.9% ) and United States Steel (X, 7.7% ). Compared with Q2 2024, it opened 16 new positions, sold out of 24, added to 8 and reduced 4. The biggest buy was Endeavor Group Hold Class A (EDR, shares +71% ) and the biggest sale an exit from Liberty Media Corp. Class A New (LSXMA).
Location STAMFORD, CT
CIK 0001819275
Portfolio Value $166.8M (Q3 2024) Holdings 62 stocks · $166.8M Holdings quarter Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock % Of Portfolio ▼ Shares Held Total Value Change vs Q2 2024 EDR Endeavor Group Hold Class A 1,471,217 $42.0M Add +70.7% SIRI Sirius XM Holdings Inc. 557,738 $13.2M New X United States Steel Corp. 363,804 $12.9M Add +11.3% RCM R1 RCM Inc. 510,590 $7.2M Add +3738.2% ACI Albertsons Cos Inc. Class A 387,618 $7.2M Add +9.4% K Kellanova 83,640 $6.8M New HCP Hashicorp Inc. Class A 169,963 $5.8M No change SRCL Stericycle Inc. 92,834 $5.7M Add +17.6% CTLT Catalent Inc. 83,534 $5.1M Add +596.1% AGR Avangrid Inc. 92,831 $3.3M Reduce -53.1% WSC Willscot Holdings Corp. 81,139 $3.1M Reduce -1.5% ZUO Zuora Inc. Class A 349,259 $3.0M No change SPR Spirit Aerosystems Hold Class A 87,100 $2.8M New GOOGL Alphabet Inc. Class A 16,987 $2.8M Add +102.7% KVUE Kenvue Inc. 110,000 $2.5M No change TXNM TXNM Energy Inc. 55,701 $2.4M Reduce -57.1% PARAA Paramount Global Class B 200,000 $2.1M New MTTR Matterport Inc. 371,338 $1.7M Reduce -38.1% AY Atlantica Sustainable Infras 72,618 $1.6M No change AAPL Apple Inc. 6,758 $1.6M Add +24.0% JNPR Juniper Networks Inc. 38,500 $1.5M No change DNB Dun & Bradstreet Holdings Inc. 129,157 $1.5M No change ANSS Ansys Inc. 4,629 $1.5M No change AXONICS INC 21,000 $1.5M No change FYBR Frontier Communications Pare 41,000 $1.5M New VZIO Vizio Holding Corp. Class A 130,000 $1.5M No change HAYN Haynes International Inc. 24,000 $1.4M No change CHUY Chuy's Holdings Inc. 38,000 $1.4M New VGR Vector Group Ltd. 95,000 $1.4M New MRO Marathon Oil Corp. 50,000 $1.3M No change GENI Genius Sports Ltd. 148,533 $1.2M No change HES Hess Corp. 8,500 $1.2M No change LATG Chenghe Acquisition I Co. 84,734 $982K No change ARES ACQUISITION CORP II 74,267 $804K No change BAYA Bayview Acquisition Corp. Class A 74,268 $776K No change SQSP Squarespace Inc. Class A 16,500 $766K No change CHX Championx Corp. 25,000 $754K No change BALY Bally's Corp. 43,000 $742K New AGS Playags Inc. 65,000 $740K No change PETQ Petiq Inc. 24,000 $738K New EVRI Everi Holdings Inc. 56,000 $736K New ENV Envestnet Inc. 11,500 $720K New SMAR Smartsheet Inc. Class A 13,000 $720K New PRFT Perficient Inc. 9,500 $717K No change ALE Allete Inc. 11,000 $706K No change AAN The Aaron's Co. Inc. filed as THE AARONS COMPANY INC 70,000 $697K No change SRDX Surmodics Inc. 17,000 $659K No change TRUE Truecar Inc. 190,745 $658K No change TLGYF TLGY Acquisition Corp. Class A 55,701 $643K New SKGR SK Growth Opportunities Co. Class A 55,701 $632K New PHYTF Pyrophyte Acquisition Corp. Class A 51,976 $600K No change AITR AI Transportation Acquisitio 55,701 $584K No change EGRVF Evergreen Corporation Class A 46,418 $542K New GLLI Globalink Investment Inc. 46,418 $526K No change ANSC Agriculture & Natural Soluti 37,134 $384K New DIS The Walt Disney Co. filed as DISNEY WALT CO 3,925 $378K No change MX Magnachip Semiconductor Corp. 74,268 $347K No change IONQ Ionq Inc. 38,228 $334K No change HTZ Hertz Global Hldgs Inc. 70,000 $231K No change POLESTAR AUTOMOTIVE HLDG UK 399,191 $120K No change NXDR Nextdoor Holdings Inc. 37,133 $92K No change PL Planet Labs PBC 37,133 $83K No change
Options reported separately and not counted above: ACI calls ($0), ACI puts ($0), CYTK calls ($0), EDR calls ($0), EDR puts ($0), VSTS calls ($0), IP calls ($0), TLT calls ($0), EFA puts ($0), IWM puts ($0), RCM puts ($0), SPY puts ($0), and 5 more.
Other holdings (4): bonds, preferreds, convertibles and warrants · $408K (not counted above) Security Class Shares / Principal Value Change IONQ.WS Ionq Inc. -CW26 *W EXP 09/30/202 151,362 $336K No change HTZWW Hertz Global Hldgs Inc. -CW51 *W EXP 06/30/205 30,777 $67K No change KDKRW Ares Acquisition Corp. II-28 *W EXP 99/99/999 27,850 $4K No change GGROW Gogoro Inc. -CW27 *W EXP 04/04/202 13,924 $556 No change
Total filed on the 13F, all lines: $167.2M.
Portfolio Sells Q2 2024 → Q3 2024 Portfolio Sells quarter Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q2 2024 % Of Portfolio Change To Portfolio ▲ LSXMA Liberty Media Corp. Class A New Sold out 0.00% −11.30 AGR Avangrid Inc. Reduce -53.1% 1.99% −2.56 SILK Silk Road Medical Inc. Sold out 0.00% −2.27 IHI iShares U.S. Medical Devices Sold out 0.00% −1.90 TXNM TXNM Energy Inc. Reduce -57.1% 1.46% −1.64 OLK Olink Holding AB - ADR Sold out 0.00% −1.35 ATRI Atrion Corporation Sold out 0.00% −1.32 WRK Westrock Co. Sold out 0.00% −1.30 SIRI Sirius XM Holdings Inc. Sold out 0.00% −1.14 HIBB Hibbett Inc. Sold out 0.00% −0.96 WIRE Encore Wire Corp. Sold out 0.00% −0.94 DO Diamond Offshore Drilling Inc. Sold out 0.00% −0.93 WKME Walkme Ltd. Sold out 0.00% −0.93 OVERSEAS SHIPHOLDING GROUP-A Sold out 0.00% −0.92 NWLI National Western Life Grou-A Sold out 0.00% −0.92 INFN Infinera Corp. Sold out 0.00% −0.89 MGRC McGrath Rentcorp Sold out 0.00% −0.77 MTTR Matterport Inc. Reduce -38.1% 1.00% −0.73 TRIS Tristar Acquisition I Corp. Class A Sold out 0.00% −0.67 HA Hawaiian Holdings Inc. Sold out 0.00% −0.60 CERE Cerevel Therapeutics Holding Sold out 0.00% −0.58 CNGL Canna-Global Acquisitio Class A Sold out 0.00% −0.56 RRACF Rigel Resource Acquisit Class A Sold out 0.00% −0.54 ZLSSF Zalatoris II Acquisition Cor Sold out 0.00% −0.53 TRIP Tripadvisor Inc. Sold out 0.00% −0.43 TGAAF Target Global Acquisition -A Sold out 0.00% −0.41 MONTEREY CAP ACQUISITION COR Sold out 0.00% −0.34 WSC Willscot Holdings Corp. Reduce -1.5% 1.83% −0.18
Portfolio Buys Q2 2024 → Q3 2024 Portfolio Buys quarter Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q2 2024 % Of Portfolio Change To Portfolio ▼ EDR Endeavor Group Hold Class A Add +70.7% 25.19% +10.12 SIRI Sirius XM Holdings Inc. New 7.91% +7.91 RCM R1 RCM Inc. Add +3738.2% 4.34% +4.23 K Kellanova New 4.05% +4.05 CTLT Catalent Inc. Add +596.1% 3.03% +2.60 SPR Spirit Aerosystems Hold Class A New 1.70% +1.70 PARAA Paramount Global Class B New 1.27% +1.27 FYBR Frontier Communications Pare New 0.87% +0.87 CHUY Chuy's Holdings Inc. New 0.85% +0.85 VGR Vector Group Ltd. New 0.85% +0.85 GOOGL Alphabet Inc. Class A Add +102.7% 1.69% +0.70 BALY Bally's Corp. New 0.44% +0.44 PETQ Petiq Inc. New 0.44% +0.44 EVRI Everi Holdings Inc. New 0.44% +0.44 ENV Envestnet Inc. New 0.43% +0.43 SMAR Smartsheet Inc. Class A New 0.43% +0.43 SRCL Stericycle Inc. Add +17.6% 3.39% +0.43 TLGYF TLGY Acquisition Corp. Class A New 0.39% +0.39 SKGR SK Growth Opportunities Co. Class A New 0.38% +0.38 EGRVF Evergreen Corporation Class A New 0.32% +0.32 ANSC Agriculture & Natural Soluti New 0.23% +0.23 AAPL Apple Inc. Add +24.0% 0.94% +0.20 ACI Albertsons Cos Inc. Class A Add +9.4% 4.29% −0.23 X United States Steel Corp. Add +11.3% 7.70% −0.29
Options Activity Q2 2024 → Q3 2024 Security Type Change vs Q2 2024 Underlying Shares Value ▼ ACI Albertsons Cos Inc. Class A call Add +555.1% 982,700 $0 AMED Amedisys Inc. put Sold out 102,700 $0before exit AXONICS INC put Sold out 40,000 $0before exit CYTK Cytokinetics Inc. call Reduce -20.5% 77,700 $0 EDR Endeavor Group Hold Class A call Add +5.4% 829,900 $0 EDR Endeavor Group Hold Class A put Add +100.1% 1,501,000 $0 VSTS Vestis Corp. call New 150,000 $0 PODD Insulet Corp. call Sold out 20,000 $0before exit IP International Paper Co. call Reduce -76.9% 67,000 $0 TLT iShares 20+ Year Treasury BD call New 148,500 $0 EFA iShares MSCI Eafe ETF put Reduce -18.6% 17,100 $0 IWM iShares Russell 2000 ETF put Reduce -22.0% 16,300 $0 RCM R1 RCM Inc. put New 37,900 $0 SPY SS SPDR S&P 500 ETF Trust-US put Reduce -25.9% 12,000 $0 SIRI Sirius XM Holdings Inc. put Sold out 6,085,200 $0before exit SIRI Sirius XM Holdings Inc. put New 5,071,400 $0 SPR Spirit Aerosystems Hold Class A call Reduce -91.3% 33,500 $0 SAVEQ Spirit Airlines Inc. put Add +10.2% 418,700 $0 SAVEQ Spirit Airlines Inc. call Sold out 50,000 $0before exit X United States Steel Corp. put Add +19.6% 392,300 $0 X United States Steel Corp. call Add +93.3% 168,600 $0
Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.
Notes & Other Activity Q2 2024 → Q3 2024 Security Class Change vs Q2 2024 Shares / Principal Value ▼ KRNLW Kernel Group HLDG -A -CW27 *W EXP 99/99/999 Sold out 23,261 $3Kbefore exit BLUAW Blueriver Acquisit A -CW26 *W EXP 01/04/202 Sold out 36,974 $503before exit
Bonds, preferreds, convertibles and warrants; not part of the stock holdings or percentages above.
All Filings Quarter Positions 13F Reported Value Top Holdings Q1 2026 21 $23.0M VLOS, CEPO, MCGA, WBD, EA Q4 2025 6 $18.0M VLOS, CCIX, CEPO, MCGA, MRLN Q3 2025 83 $93.0M SPR, K, GTLS, CTLP, TXNM Q2 2025 71 $115.1M K, JNPR, GMS, ACI, SPR Q1 2025 59 $128.4M X, K, JNPR, CCIR, COLOMBIER ACQUISITION CORP Q4 2024 54 $138.2M EDR, X, K, JNPR, HCP Q3 2024 62 $166.8M EDR, SIRI, X, RCM, ACI Q2 2024 70 $154.6M EDR, LSXMA, X, AGR, ACI Q1 2024 65 $146.8M EVBG, X, EDR, LSXMA, PXD