BCK Capital Management LP

In its 13F for Q3 2025 (holdings as of September 30, 2025, filed November 10, 2025), BCK Capital Management LP reported 83 stock positions worth $93.0 million. Its top holding was Spirit Aerosystems Hold Class A (SPR) at 5.0% of the portfolio, followed by Kellanova (K, 4.6%) and Chart Industries (GTLS, 4.4%). Compared with Q2 2025, it opened 42 new positions, sold out of 30, added to 19 and reduced 22. The biggest buy was a new position in Chart Industries (GTLS) and the biggest sale an exit from Juniper Networks (JNPR).

Most Recent 13F
Q1 2026
Location
STAMFORD, CT
CIK
0001819275
Portfolio Value
$93.0M (Q3 2025)
SEC Filing
0001819275-25-000004 ↗ filed Nov 10, 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 Q4 2024 Q1 2025: $128.4M Q1 2025 Q2 2025: $115.1M Q2 2025 Q3 2025: $93.0M $93.0M Q3 2025 Q4 2025: $18.0M Q4 2025 Q1 2026: $23.0M Q1 2026

Holdings 83 stocks · $93.0M
SPR Spirit Aerosystems Hold Class A 5.00% 120,458 $4.6M Reduce -7.2%
K Kellanova 4.56% 51,681 $4.2M Reduce -69.8%
GTLS Chart Industries Inc. 4.44% 20,628 $4.1M New
CTLP Cantaloupe Inc. 3.28% 288,692 $3.1M Add +330.9%
TXNM TXNM Energy Inc. 2.62% 43,043 $2.4M Add +16.0%
BRR Columbus Circle Capital Co. Class A 2.39% 219,401 $2.2M Add +68.8%
TGNA Tegna Inc. 2.10% 95,938 $2.0M New
AAPL Apple Inc. 1.98% 7,213 $1.8M Reduce -27.8%
TACO Berto Acquisition Corp. 1.93% 172,148 $1.8M New
GENI Genius Sports Ltd. 1.83% 137,748 $1.7M Reduce -7.3%
VLOS Velos Acquisition I Corp. filed as M3BRIGADE ACQUISITION V CORP 1.81% 159,818 $1.7M New
CYBR Cyberark Software Ltd./Israel 1.79% 3,444 $1.7M New
CCRN Cross Country Healthcare Inc. 1.71% 111,908 $1.6M Add +88.9%
HONE Harborone Bancorp Inc. 1.67% 114,222 $1.6M Reduce -7.1%
GOOGL Alphabet Inc. Class A 1.61% 6,170 $1.5M Reduce -56.4%
CCIX Churchill Capital Corp. Ix 1.54% 136,885 $1.4M Add +5.3%
HBI Hanesbrands Inc. 1.53% 216,081 $1.4M New
FYBR Frontier Communications Pare 1.53% 38,025 $1.4M Reduce -7.3%
VBTX Veritex Holdings Inc. 1.51% 41,733 $1.4M New
PBPB Potbelly Corp. 1.50% 81,610 $1.4M New
SRDX Surmodics Inc. 1.49% 46,317 $1.4M Add +172.4%
STAA Staar Surgical Co. 1.47% 51,006 $1.4M New
PRA Proassurance Corp. 1.46% 56,589 $1.4M Reduce -7.2%
VMEO Vimeo Inc. 1.44% 172,187 $1.3M New
WNS WNS Holdings Ltd. filed as WNS HLDGS LTD 1.41% 17,233 $1.3M New
BRY Berry Corp. 1.40% 344,986 $1.3M New
IMXI International Money Express 1.38% 91,811 $1.3M New
CEPO Cantor Equity Partners I-A 1.36% 120,532 $1.3M New
MRLN Merlin Inc. filed as BLEICHROEDER ACQUISITION COR 1.35% 120,531 $1.3M Add +20.5%
CCRD Corecard Corp. 1.25% 43,047 $1.2M New
CCIIU Cohen Circle Acquisition Cor 1.24% 111,925 $1.2M New
ANSC Agriculture & Natural Soluti 1.21% 103,312 $1.1M Add +18.0%
ALF Centurion Acquisition Corp. 1.17% 103,312 $1.1M Add +3.3%
JACS Jackson Acquisition Co. Class A 1.15% 103,311 $1.1M Add +3.3%
PLMK Plum Acquisition Corp. IV 1.15% 103,313 $1.1M Add +3.3%
CAEP Cantor Equity Partners III-A 1.15% 103,312 $1.1M Add +143.1%
DRDB Roman DBDR Acquisition Corp. 1.15% 103,313 $1.1M Add +105.8%
MCGA Yorkville Acquisition Corp. Class A 1.12% 97,690 $1.0M New
ACI Albertsons Cos Inc. Class A 1.06% 56,167 $983K Reduce -76.1%
GTERU Globa Terra Acquisition Corp. 1.01% 92,739 $943K New
VRNA Verona Pharma Ltd. 1.01% 8,816 $941K New
TRML Tourmaline Bio Inc. 1.00% 19,471 $931K New
MRUS Merus NV 0.99% 9,737 $917K New
INACU Indigo Acquisition Corp. 0.94% 86,094 $870K New
NMPAU NMP Acquisition Corp. 0.94% 86,094 $870K New
AXINU Axiom Intelligence Acquisiti 0.94% 86,094 $870K Add +72.2%
CCCXU Churchill Capital Corp. X 0.88% 60,265 $815K Reduce -45.2%
WSC Willscot Holdings Corp. 0.78% 34,451 $727K Reduce -57.5%
CEPT Cantor Equity Partners Class A 0.78% 68,864 $724K Add +10.2%
MACI Melar Acquisition Corp. I-A 0.78% 68,874 $723K Add +37.8%
AL Sumisho Air Lease Corp. filed as AIR LEASE CORP 0.76% 11,147 $710K New
EA Electronic Arts Inc. 0.76% 3,503 $707K New
DAY Dayforce Inc. 0.76% 10,201 $703K New
PRO Pros Holdings Inc. 0.75% 30,604 $701K New
PHLT Performant Healthcare Inc. 0.75% 90,420 $699K New
ODP The Odp Corp. filed as THE ODP CORP 0.75% 25,040 $697K New
PREMIER INC-CLASS A 0.75% 25,041 $696K New
BCARU D Boral Arc Acquisition I Co. 0.75% 69,553 $696K New
VRNT Verint Systems Inc. 0.75% 34,314 $695K New
LWACU Lightwave Acquisition Corp. 0.74% 68,875 $692K Add +31.2%
OBAWU Oxley Bridge Acquisition Ltd. 0.74% 68,873 $691K Add +28.1%
PGRE Paramount Group Inc. 0.74% 105,721 $691K New
SHCO Soho House & Co. Inc. 0.74% 77,901 $689K New
WOW Wideopenwest Inc. 0.74% 133,544 $689K New
SPNS Sapiens International Corp. 0.73% 15,765 $678K New
GES Guess? Inc. 0.73% 40,464 $676K New
MLNK Meridianlink Inc. 0.73% 33,850 $675K New
AVDX Avidxchange Holdings Inc. 0.71% 66,806 $665K Reduce -7.2%
CGCTU Cartesian Growth Corp. III 0.68% 61,845 $629K Add +23.7%
SPEGU Silver Pegasus Acquisition C 0.57% 51,718 $526K New
SIMA Sim Acquisition Corp. I-A 0.53% 46,370 $489K Reduce -7.3%
KCHVU Kochav Defense Acquisition C 0.51% 46,370 $475K Reduce -7.3%
HTZ Hertz Global Hldgs Inc. 0.47% 64,915 $441K Reduce -7.3%
DIS The Walt Disney Co. filed as DISNEY WALT CO 0.45% 3,640 $417K Reduce -7.3%
IP International Paper Co. 0.43% 8,608 $399K Reduce -73.5%
VSTS Vestis Corp. 0.42% 86,904 $394K Reduce -41.2%
HCMAU HCM III Acquisition Corp. 0.36% 32,459 $335K New
IONQ Ionq Inc. 0.31% 4,739 $291K Reduce -83.4%
FIGXU Figx Capital Acquisition Cor 0.28% 25,828 $260K New
MCGAU Yorkville Acquisition Corp. 0.28% 23,185 $256K Reduce -7.3%
APADU A Paradise Acquisition Corp. 0.25% 23,185 $231K New
MX Magnachip Semiconductor Corp. 0.23% 68,876 $216K Reduce -7.3%
NXDR Nextdoor Holdings Inc. 0.08% 34,437 $72K Reduce -7.3%

Options reported separately and not counted above: ACI calls ($0), VSTS calls ($0), FWRD calls ($0), TLT calls ($0), SRDX calls ($0), SRDX puts ($0), WSC calls ($0).

Other holdings (3): bonds, preferreds, convertibles and warrants · $1.0M (not counted above)
SecurityClassShares / PrincipalValueChange
IONQ.WS Ionq Inc. -CW26 *W EXP 09/30/202 18,482$918KReduce -7.3%
HTZWW Hertz Global Hldgs Inc. -CW51 *W EXP 06/30/205 28,542$106KReduce -7.3%
GGROW Gogoro Inc. -CW27 *W EXP 04/04/202 12,913$285Reduce -7.3%

Total filed on the 13F, all lines: $94.0M.

Portfolio Sells Q2 2025 → Q3 2025
JNPR Juniper Networks Inc. Sold out 0.00% −7.73
K Kellanova Reduce -69.8% 4.56% −7.26
GMS GMS Inc. Sold out 0.00% −6.14
CCIR Cohen Circle Acquisitio Class A Sold out 0.00% −3.47
ACI Albertsons Cos Inc. Class A Reduce -76.1% 1.06% −3.34
SKX Skechers USA Inc. Class A Sold out 0.00% −3.05
RDUS Radius Recycling Inc. Class A Sold out 0.00% −2.40
SAGE Sage Therapeutics Inc. Sold out 0.00% −2.35
RNW Renew Energy Global PLC-A Sold out 0.00% −2.34
ALE Allete Inc. Sold out 0.00% −1.55
MAG Mag Silver Corp. Sold out 0.00% −1.43
ANSS Ansys Inc. Sold out 0.00% −1.41
SPTN Spartannash Co. Sold out 0.00% −1.27
FARO Faro Technologies Inc. Sold out 0.00% −1.26
FL Foot Locker Inc. Sold out 0.00% −1.19
STR Sitio Royalties Corp. Class A Sold out 0.00% −1.17
WSC Willscot Holdings Corp. Reduce -57.5% 0.78% −1.15
HES Hess Corp. Sold out 0.00% −1.02
MAC COPPER LTD Sold out 0.00% −0.99
GSRT GSR III Acquisition Corp. Sold out 0.00% −0.91
ARES ACQUISITION CORP II Sold out 0.00% −0.91
IP International Paper Co. Reduce -73.5% 0.43% −0.89
BPMC Blueprint Medicines Corp. Sold out 0.00% −0.85
SWTX Springworks Therapeutics Inc. Sold out 0.00% −0.82
IONQ Ionq Inc. Reduce -83.4% 0.31% −0.75
CHX Championx Corp. Sold out 0.00% −0.75
COLOMBIER ACQUISITION CORP Sold out 0.00% −0.75
DNB Dun & Bradstreet Holdings Inc. Sold out 0.00% −0.73
WBA Walgreens Boots Alliance Inc. Sold out 0.00% −0.63
TGI Triumph Group Inc. Sold out 0.00% −0.63
GOOGL Alphabet Inc. Class A Reduce -56.4% 1.61% −0.55
BASE Couchbase Inc. Sold out 0.00% −0.55
KVUE Kenvue Inc. Sold out 0.00% −0.50
OAKU Oak Woods Acquisition Corp. Class A Sold out 0.00% −0.38
VSTS Vestis Corp. Reduce -41.2% 0.42% −0.31
PL Planet Labs PBC Sold out 0.00% −0.20
CCCXU Churchill Capital Corp. X Reduce -45.2% 0.88% −0.11
POLESTAR AUTOMOTIVE HLDG UK Sold out 0.00% −0.05
MX Magnachip Semiconductor Corp. Reduce -7.3% 0.23% −0.02
NXDR Nextdoor Holdings Inc. Reduce -7.3% 0.08% +0.02
DIS The Walt Disney Co. Reduce -7.3% 0.45% +0.03
MCGAU Yorkville Acquisition Corp. Reduce -7.3% 0.28% +0.03
HTZ Hertz Global Hldgs Inc. Reduce -7.3% 0.47% +0.06
KCHVU Kochav Defense Acquisition C Reduce -7.3% 0.51% +0.07
SIMA Sim Acquisition Corp. I-A Reduce -7.3% 0.53% +0.07
AVDX Avidxchange Holdings Inc. Reduce -7.2% 0.71% +0.10
AAPL Apple Inc. Reduce -27.8% 1.98% +0.19
FYBR Frontier Communications Pare Reduce -7.3% 1.53% +0.23
PRA Proassurance Corp. Reduce -7.2% 1.46% +0.25
HONE Harborone Bancorp Inc. Reduce -7.1% 1.67% +0.42

Portfolio Buys Q2 2025 → Q3 2025
GTLS Chart Industries Inc. New 4.44% +4.44
CTLP Cantaloupe Inc. Add +330.9% 3.28% +2.64
TGNA Tegna Inc. New 2.10% +2.10
TACO Berto Acquisition Corp. New 1.93% +1.93
VLOS Velos Acquisition I Corp. New 1.81% +1.81
CYBR Cyberark Software Ltd./Israel New 1.79% +1.79
HBI Hanesbrands Inc. New 1.53% +1.53
VBTX Veritex Holdings Inc. New 1.51% +1.51
PBPB Potbelly Corp. New 1.50% +1.50
STAA Staar Surgical Co. New 1.47% +1.47
VMEO Vimeo Inc. New 1.44% +1.44
WNS WNS Holdings Ltd. New 1.41% +1.41
BRY Berry Corp. New 1.40% +1.40
IMXI International Money Express New 1.38% +1.38
CEPO Cantor Equity Partners I-A New 1.36% +1.36
CCRD Corecard Corp. New 1.25% +1.25
CCIIU Cohen Circle Acquisition Cor New 1.24% +1.24
BRR Columbus Circle Capital Co. Class A Add +68.8% 2.39% +1.19
MCGA Yorkville Acquisition Corp. Class A New 1.12% +1.12
SRDX Surmodics Inc. Add +172.4% 1.49% +1.05
CCRN Cross Country Healthcare Inc. Add +88.9% 1.71% +1.04
GTERU Globa Terra Acquisition Corp. New 1.01% +1.01
VRNA Verona Pharma Ltd. New 1.01% +1.01
TRML Tourmaline Bio Inc. New 1.00% +1.00
MRUS Merus NV New 0.99% +0.99
INACU Indigo Acquisition Corp. New 0.94% +0.94
NMPAU NMP Acquisition Corp. New 0.94% +0.94
TXNM TXNM Energy Inc. Add +16.0% 2.62% +0.80
AL Sumisho Air Lease Corp. New 0.76% +0.76
EA Electronic Arts Inc. New 0.76% +0.76
CAEP Cantor Equity Partners III-A Add +143.1% 1.15% +0.76
DAY Dayforce Inc. New 0.76% +0.76
PRO Pros Holdings Inc. New 0.75% +0.75
PHLT Performant Healthcare Inc. New 0.75% +0.75
ODP The Odp Corp. New 0.75% +0.75
PREMIER INC-CLASS A New 0.75% +0.75
BCARU D Boral Arc Acquisition I Co. New 0.75% +0.75
VRNT Verint Systems Inc. New 0.75% +0.75
PGRE Paramount Group Inc. New 0.74% +0.74
SHCO Soho House & Co. Inc. New 0.74% +0.74
WOW Wideopenwest Inc. New 0.74% +0.74
SPNS Sapiens International Corp. New 0.73% +0.73
GES Guess? Inc. New 0.73% +0.73
MLNK Meridianlink Inc. New 0.73% +0.73
DRDB Roman DBDR Acquisition Corp. Add +105.8% 1.15% +0.70
SPEGU Silver Pegasus Acquisition C New 0.57% +0.57
AXINU Axiom Intelligence Acquisiti Add +72.2% 0.94% +0.50
MRLN Merlin Inc. Add +20.5% 1.35% +0.45
ANSC Agriculture & Natural Soluti Add +18.0% 1.21% +0.39
HCMAU HCM III Acquisition Corp. New 0.36% +0.36

Options Activity Q2 2025 → Q3 2025
ACI Albertsons Cos Inc. Class A call Add +10.9% 536,500 $0
CORZ Core Scientific Inc. call Sold out 200,000 $0before exit
VSTS Vestis Corp. call Reduce -0.5% 55,400 $0
FWRD Forward Air Corp. call New 52,700 $0
TLT iShares 20+ Year Treasury BD call Reduce -7.3% 68,900 $0
EFA iShares MSCI Eafe ETF put Sold out 14,700 $0before exit
IWM iShares Russell 2000 ETF put Sold out 19,000 $0before exit
JNPR Juniper Networks Inc. call Sold out 547,900 $0before exit
JNPR Juniper Networks Inc. put Sold out 462,200 $0before exit
SRDX Surmodics Inc. call New 50,000 $0
SRDX Surmodics Inc. put New 50,000 $0
WSC Willscot Holdings Corp. call Reduce -12.9% 85,700 $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 2025 → Q3 2025
IONQ.WS Ionq Inc. -CW26 *W EXP 09/30/202 Reduce -7.3% 18,482 $918K
HTZWW Hertz Global Hldgs Inc. -CW51 *W EXP 06/30/205 Reduce -7.3% 28,542 $106K
KDKRW Ares Acquisition Corp. II-28 *W EXP 99/99/999 Sold out 27,850 $31Kbefore exit
GGROW Gogoro Inc. -CW27 *W EXP 04/04/202 Reduce -7.3% 12,913 $285

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