BCK Capital Management LP

In its 13F for Q4 2024 (holdings as of December 31, 2024, filed February 18, 2025), BCK Capital Management LP reported 54 stock positions worth $138.2 million. Its top holding was Endeavor Group Hold Class A (EDR) at 25.8% of the portfolio, followed by United States Steel (X, 10.3%) and Kellanova (K, 9.9%). Compared with Q3 2024, it opened 16 new positions, sold out of 24, added to 4 and reduced 7. The biggest buy was Kellanova (K, shares +102%) and the biggest sale Sirius XM (SIRI, shares −71%).

Most Recent 13F
Q1 2026
Location
STAMFORD, CT
CIK
0001819275
Portfolio Value
$138.2M (Q4 2024)
SEC Filing
0001085146-25-001745 ↗ filed Feb 18, 2025

Holdings Value

0$50.0M$100.0M$150.0M$200.0M Q1 2024: $146.8M Q1 2024 Q2 2024: $154.6M Q2 2024 Q3 2024: $166.8M Q3 2024 Q4 2024: $138.2M $138.2M Q4 2024 Q1 2025: $128.4M Q1 2025 Q2 2025: $115.1M Q2 2025 Q3 2025: $93.0M Q3 2025 Q4 2025: $18.0M Q4 2025 Q1 2026: $23.0M Q1 2026

Holdings 54 stocks · $138.2M
EDR Endeavor Group Hold Class A 25.77% 1,137,684 $35.6M Reduce -22.7%
X United States Steel Corp. 10.26% 417,001 $14.2M Add +14.6%
K Kellanova 9.88% 168,610 $13.7M Add +101.6%
JNPR Juniper Networks Inc. 4.29% 158,130 $5.9M Add +310.7%
HCP Hashicorp Inc. Class A 3.52% 142,112 $4.9M Reduce -16.4%
SUM Summit Materials Inc. Class A 3.40% 92,796 $4.7M New
ACI Albertsons Cos Inc. Class A 2.93% 205,851 $4.0M Reduce -46.9%
SIRI Sirius XM Holdings Inc. 2.65% 160,423 $3.7M Reduce -71.2%
ZUO Zuora Inc. Class A 2.51% 349,259 $3.5M No change
MTTR Matterport Inc. 2.29% 668,411 $3.2M Add +80.0%
WSC Willscot Holdings Corp. 1.96% 81,139 $2.7M No change
ALTM Arcadium Lithium PLC 1.90% 510,521 $2.6M New
SPR Spirit Aerosystems Hold Class A 1.83% 74,159 $2.5M Reduce -14.9%
GOOGL Alphabet Inc. Class A 1.82% 13,318 $2.5M Reduce -21.6%
KVUE Kenvue Inc. 1.70% 110,000 $2.3M No change
VSTS Vestis Corp. 1.51% 137,251 $2.1M New
AAPL Apple Inc. 1.23% 6,758 $1.7M No change
DNB Dun & Bradstreet Holdings Inc. 1.16% 129,157 $1.6M No change
IONQ Ionq Inc. 1.16% 38,228 $1.6M No change
ANSS Ansys Inc. 1.13% 4,629 $1.6M No change
ALTR Altair Engineering Inc. Class A 1.09% 13,800 $1.5M New
FYBR Frontier Communications Pare 1.03% 41,000 $1.4M No change
USAP Universal Stainless & Alloy 1.02% 32,000 $1.4M New
GENI Genius Sports Ltd. 0.93% 148,533 $1.3M No change
HES Hess Corp. 0.82% 8,500 $1.1M No change
CCRN Cross Country Healthcare Inc. 0.78% 59,250 $1.1M New
DESP Despegar.com Corp. 0.77% 55,412 $1.1M New
ARES ACQUISITION CORP II 0.59% 74,267 $815K No change
BALY Bally's Corp. 0.56% 43,000 $769K New
EVRI Everi Holdings Inc. 0.55% 56,000 $757K No change
AGS Playags Inc. 0.54% 65,000 $749K No change
BARNES GROUP INC 0.53% 15,500 $733K New
SMAR Smartsheet Inc. Class A 0.53% 13,000 $728K No change
ALE Allete Inc. 0.52% 11,000 $713K No change
JWN Nordstrom Inc. 0.52% 29,500 $712K New
PDCO Patterson Cos Inc. 0.51% 23,000 $710K New
ROIC Retail Opportunity Investmen 0.50% 40,000 $694K New
ATSG Air Transport Services Group 0.50% 31,500 $692K New
CDMO Avid Bioservices Inc. 0.50% 56,000 $692K New
CHX Championx Corp. 0.49% 25,000 $680K No change
SRDX Surmodics Inc. 0.49% 17,000 $673K No change
SKGR SK Growth Opportunities Co. Class A 0.47% 55,701 $648K No change
AITR AI Transportation Acquisitio 0.43% 55,701 $599K No change
EGRVF Evergreen Corporation Class A 0.40% 46,418 $551K No change
BAYA Bayview Acquisition Corp. Class A 0.39% 50,000 $534K Reduce -32.7%
DIS The Walt Disney Co. filed as DISNEY WALT CO 0.32% 3,925 $437K No change
OAKU Oak Woods Acquisition Corp. Class A 0.31% 37,134 $421K New
ANSC Agriculture & Natural Soluti 0.28% 37,134 $390K No change
MX Magnachip Semiconductor Corp. 0.22% 74,268 $299K No change
HTZ Hertz Global Hldgs Inc. 0.19% 70,000 $256K No change
GRNT Granite Ridge Resources Inc. 0.14% 29,554 $191K New
PL Planet Labs PBC 0.11% 37,133 $150K No change
NXDR Nextdoor Holdings Inc. 0.06% 37,133 $88K No change
POLESTAR AUTOMOTIVE HLDG UK 0.04% 399,191 $55K No change

Options reported separately and not counted above: ACI calls ($0), ACI puts ($0), AMED puts ($0), EDR puts ($0), EDR calls ($0), VSTS calls ($0), GXO calls ($0), TLT calls ($0), JNPR puts ($0), SIRI puts ($0), X puts ($0), X calls ($0), and 1 more.

Other holdings (3): bonds, preferreds, convertibles and warrants · $71K (not counted above)
SecurityClassShares / PrincipalValueChange
HTZWW Hertz Global Hldgs Inc. -CW51 *W EXP 06/30/205 30,777$66KNo change
KDKRW Ares Acquisition Corp. II-28 *W EXP 99/99/999 27,850$4KNo change
GGROW Gogoro Inc. -CW27 *W EXP 04/04/202 13,924$237No change

Total filed on the 13F, all lines: $138.2M.

Portfolio Sells Q3 2024 → Q4 2024
SIRI Sirius XM Holdings Inc. Reduce -71.2% 2.65% −5.26
RCM R1 RCM Inc. Sold out 0.00% −4.34
SRCL Stericycle Inc. Sold out 0.00% −3.39
CTLT Catalent Inc. Sold out 0.00% −3.03
AGR Avangrid Inc. Sold out 0.00% −1.99
TXNM TXNM Energy Inc. Sold out 0.00% −1.46
ACI Albertsons Cos Inc. Class A Reduce -46.9% 2.93% −1.37
PARAA Paramount Global Class B Sold out 0.00% −1.27
AY Atlantica Sustainable Infras Sold out 0.00% −0.96
AXONICS INC Sold out 0.00% −0.88
VZIO Vizio Holding Corp. Class A Sold out 0.00% −0.87
HAYN Haynes International Inc. Sold out 0.00% −0.86
CHUY Chuy's Holdings Inc. Sold out 0.00% −0.85
VGR Vector Group Ltd. Sold out 0.00% −0.85
MRO Marathon Oil Corp. Sold out 0.00% −0.80
LATG Chenghe Acquisition I Co. Sold out 0.00% −0.59
SQSP Squarespace Inc. Class A Sold out 0.00% −0.46
BALY Bally's Corp. Sold out 0.00% −0.44
PETQ Petiq Inc. Sold out 0.00% −0.44
ENV Envestnet Inc. Sold out 0.00% −0.43
PRFT Perficient Inc. Sold out 0.00% −0.43
AAN The Aaron's Co. Inc. Sold out 0.00% −0.42
TRUE Truecar Inc. Sold out 0.00% −0.39
TLGYF TLGY Acquisition Corp. Class A Sold out 0.00% −0.39
PHYTF Pyrophyte Acquisition Corp. Class A Sold out 0.00% −0.36
GLLI Globalink Investment Inc. Sold out 0.00% −0.32
BAYA Bayview Acquisition Corp. Class A Reduce -32.7% 0.39% −0.08
HCP Hashicorp Inc. Class A Reduce -16.4% 3.52% +0.07
SPR Spirit Aerosystems Hold Class A Reduce -14.9% 1.83% +0.13
GOOGL Alphabet Inc. Class A Reduce -21.6% 1.82% +0.14
EDR Endeavor Group Hold Class A Reduce -22.7% 25.77% +0.58

Portfolio Buys Q3 2024 → Q4 2024
K Kellanova Add +101.6% 9.88% +5.84
SUM Summit Materials Inc. Class A New 3.40% +3.40
JNPR Juniper Networks Inc. Add +310.7% 4.29% +3.39
X United States Steel Corp. Add +14.6% 10.26% +2.56
ALTM Arcadium Lithium PLC New 1.90% +1.90
VSTS Vestis Corp. New 1.51% +1.51
MTTR Matterport Inc. Add +80.0% 2.29% +1.29
ALTR Altair Engineering Inc. Class A New 1.09% +1.09
USAP Universal Stainless & Alloy New 1.02% +1.02
CCRN Cross Country Healthcare Inc. New 0.78% +0.78
DESP Despegar.com Corp. New 0.77% +0.77
BALY Bally's Corp. New 0.56% +0.56
BARNES GROUP INC New 0.53% +0.53
JWN Nordstrom Inc. New 0.52% +0.52
PDCO Patterson Cos Inc. New 0.51% +0.51
ROIC Retail Opportunity Investmen New 0.50% +0.50
ATSG Air Transport Services Group New 0.50% +0.50
CDMO Avid Bioservices Inc. New 0.50% +0.50
OAKU Oak Woods Acquisition Corp. Class A New 0.31% +0.31
GRNT Granite Ridge Resources Inc. New 0.14% +0.14

Options Activity Q3 2024 → Q4 2024
ACI Albertsons Cos Inc. Class A call Add +2.1% 1,003,000 $0
AMED Amedisys Inc. put New 456,200 $0
CYTK Cytokinetics Inc. call Sold out 77,700 $0before exit
EDR Endeavor Group Hold Class A call Reduce -52.5% 394,500 $0
VSTS Vestis Corp. call Add +149.7% 374,500 $0
GXO Gxo Logistics Inc. call New 180,300 $0
IP International Paper Co. call Sold out 67,000 $0before exit
EFA iShares MSCI Eafe ETF put Sold out 17,100 $0before exit
IWM iShares Russell 2000 ETF put Sold out 16,300 $0before exit
JNPR Juniper Networks Inc. put New 124,400 $0
RCM R1 RCM Inc. put Sold out 37,900 $0before exit
SPY SS SPDR S&P 500 ETF Trust-US put Sold out 12,000 $0before exit
SIRI Sirius XM Holdings Inc. put Reduce -86.2% 699,600 $0
SPR Spirit Aerosystems Hold Class A call Sold out 33,500 $0before exit
SAVEQ Spirit Airlines Inc. put Sold out 418,700 $0before exit
X United States Steel Corp. put Add +30.0% 509,900 $0
X United States Steel Corp. call Add +247.6% 586,100 $0
ALTM Arcadium Lithium PLC call New 714,800 $0

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
IONQ.WS Ionq Inc. -CW26 *W EXP 09/30/202 Sold out 151,362 $336Kbefore exit

Bonds, preferreds, convertibles and warrants; not part of the stock holdings or percentages above.

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q1 2026 21$23.0MVLOS, CEPO, MCGA, WBD, EA
Q4 2025 6$18.0MVLOS, CCIX, CEPO, MCGA, MRLN
Q3 2025 83$93.0MSPR, K, GTLS, CTLP, TXNM
Q2 2025 71$115.1MK, JNPR, GMS, ACI, SPR
Q1 2025 59$128.4MX, K, JNPR, CCIR, COLOMBIER ACQUISITION CORP
Q4 2024 54$138.2MEDR, X, K, JNPR, HCP
Q3 2024 62$166.8MEDR, SIRI, X, RCM, ACI
Q2 2024 70$154.6MEDR, LSXMA, X, AGR, ACI
Q1 2024 65$146.8MEVBG, X, EDR, LSXMA, PXD