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Super Investors BCK CAPITAL MANAGEMENT LP
BC

BCK CAPITAL MANAGEMENT LP

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$23M
Positions
21
Quarter ended
March 31, 2026
Filed
May 01, 2026

Reported portfolio value by quarter (22 quarters reported)

$200M $22.7M
Q4 20 Q1 22 Q2 23 Q3 24 Q4 25 Q1 26

$125M in Q4 2020 → $23M now. Hover for any quarter.

Holdings

As reported for the quarter ended March 31, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
MA M3brigade Acquisition V Corp 18.2% Unchanged 388,000 $4.17M
Cantor Equity Partners I Inc 17.7% Unchanged 388,000 $4.07M
Yorkville Acquisition Corp. 16.7% Unchanged 379,000 $3.83M
Warner Bros Discovery Inc 8.1% New 68,000 $1.87M
Electronic Arts Inc 6.2% New 7,000 $1.43M
CI Chart Inds Inc 5.0% New 5,500 $1.14M
Hologic Inc 4.6% New 14,000 $1.06M
Janus Henderson Group PLC 3.8% New 17,170 $882K
Arcellx Inc 2.0% New 4,000 $459K
Aes Corp 1.8% New 30,000 $423K
SA Sealed Air Corp New 1.8% New 10,000 $421K
UM Unifirst Corp Mass 1.8% New 1,600 $403K
AC Albertsons Cos Inc 1.6% Unchanged 21,730 $370K
Apellis Pharmaceuticals Inc 1.4% New 8,000 $322K
International Money Express 1.4% New 20,000 $316K
Digitalbridge Group Inc 1.3% New 20,000 $308K
Tri Pointe Homes Inc 1.3% New 6,500 $304K
NF Nathans Famous Inc 1.3% New 3,000 $302K
On24 Inc 1.3% New 37,000 $300K
CA Clearwater Analytics Hldgs I 1.3% New 12,500 $296K
AT Amicus Therapeutic 1.3% New 20,000 $289K

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q1 2026

quarter ended March 31, 2026 · filed May 01, 2026

Company Action Shares changed Value of change % of portfolio
AC Albertsons Cos Inc Exited −278,100 −$4.77M —
CC Churchill Capital Corp Ix Exited −380,000 −$4.04M —
Warner Bros Discovery Inc New +68,000 +$1.87M 8.1%
IP Inflection Point Acquisition Exited −144,322 −$1.55M —
Electronic Arts Inc New +7,000 +$1.43M 6.2%
CI Chart Inds Inc New +5,500 +$1.14M 5.0%
Hologic Inc New +14,000 +$1.06M 4.6%
Janus Henderson Group PLC New +17,170 +$882K 3.8%
Arcellx Inc New +4,000 +$459K 2.0%
Aes Corp New +30,000 +$423K 1.8%

Showing the 10 largest of 20 changes.

Q4 2025

quarter ended December 31, 2025 · filed February 11, 2026

Company Action Shares changed Value of change % of portfolio
SA Spirit Aerosystems Hldgs Inc Exited −120,458 −$4.65M —
AC Albertsons Cos Inc Trimmed −258,400 −$4.44M 21.0%
Kellanova Exited −51,681 −$4.24M —
CI Chart Inds Inc Exited −20,628 −$4.13M —
Cantaloupe Inc Exited −288,692 −$3.05M —
Yorkville Acquisition Corp. Added +281,310 +$2.85M 16.9%
Cantor Equity Partners I Inc Added +267,468 +$2.78M 17.8%
CC Churchill Capital Corp Ix Added +243,115 +$2.58M 17.8%
Txnm Energy Inc Exited −43,043 −$2.43M —
MA M3brigade Acquisition V Corp Added +228,182 +$2.43M 18.1%

Showing the 10 largest of 93 changes.

Q3 2025

quarter ended September 30, 2025 · filed November 10, 2025

Company Action Shares changed Value of change % of portfolio
Kellanova Trimmed −119,346 −$9.79M 4.5%
Juniper Networks Inc Exited −222,681 −$8.89M —
Gms Inc Exited −64,988 −$7.07M —
CI Chart Inds Inc New +20,628 +$4.13M 4.4%
CC Cohen Circle Acquisition Cor Exited −364,557 −$4M —
SU Skechers U S A Inc Exited −55,703 −$3.51M —
AC Albertsons Cos Inc Trimmed −178,984 −$3.13M 1.0%
Radius Recycling Inc Exited −92,917 −$2.76M —
Sage Therapeutics Inc Exited −297,040 −$2.71M —
Renew Energy Global PLC Exited −389,770 −$2.69M —

Showing the 10 largest of 129 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 07, 2025

Company Action Shares changed Value of change % of portfolio
US United States Stl Corp New Exited −426,538 −$18M —
CA Colombier Acquisition Corp I Trimmed −547,665 −$8.47M 0.7%
Gms Inc New +64,988 +$7.07M 6.1%
NE Nabors Energy Transition Cor Exited −464,175 −$5.08M —
CC Cohen Circle Acquisition Cor Trimmed −378,188 −$4.15M 3.5%
SU Skechers U S A Inc New +55,703 +$3.51M 3.0%
Sage Therapeutics Inc New +297,040 +$2.71M 2.3%
Juniper Networks Inc Trimmed −67,803 −$2.71M 7.7%
Kellanova Trimmed −32,693 −$2.6M 11.7%
LS Logility Supply Chain Soluti Exited −171,784 −$2.45M —

Showing the 10 largest of 84 changes.

Q1 2025

quarter ended March 31, 2025 · filed May 08, 2025

Company Action Shares changed Value of change % of portfolio
EG Endeavor Group Hldgs Inc Exited −1,137,684 −$35.6M —
CC Cohen Circle Acquisition Cor New +742,745 +$8.33M 6.5%
CA Colombier Acquisition Corp I New +603,354 +$6.43M 5.0%
NE Nabors Energy Transition Cor New +464,175 +$5.08M 3.9%
Hashicorp Inc Exited −142,112 −$4.86M —
Juniper Networks Inc Added +132,354 +$4.79M 8.2%
SM Summit Matls Inc Exited −92,796 −$4.7M —
SH Siriusxm Holdings Inc Exited −160,423 −$3.66M —
Zuora Inc Exited −349,259 −$3.46M —
Renew Energy Global PLC New +559,160 +$3.29M 2.6%

Showing the 10 largest of 68 changes.

Q4 2024

quarter ended December 31, 2024 · filed February 18, 2025

Company Action Shares changed Value of change % of portfolio
EG Endeavor Group Hldgs Inc Trimmed −333,533 −$10.4M 25.8%
SH Siriusxm Holdings Inc Trimmed −397,315 −$9.06M 2.6%
RR R1 Rcm Inc Exited −510,590 −$7.24M —
Kellanova Added +84,970 +$6.88M 9.9%
Stericycle Inc Exited −92,834 −$5.66M —
Catalent Inc Exited −83,534 −$5.06M —
SM Summit Matls Inc New +92,796 +$4.7M 3.4%
Juniper Networks Inc Added +119,630 +$4.48M 4.3%
AC Albertsons Cos Inc Trimmed −181,767 −$3.57M 2.9%
Avangrid Inc Exited −92,831 −$3.32M —

Showing the 10 largest of 70 changes.

Q3 2024

quarter ended September 30, 2024 · filed November 07, 2024

Company Action Shares changed Value of change % of portfolio
LM Liberty Media Corp Del Exited −789,095 −$17.5M —
EG Endeavor Group Hldgs Inc Added +609,236 +$17.4M 25.1%
SH Siriusxm Holdings Inc New +557,738 +$13.2M 7.9%
RR R1 Rcm Inc Added +497,287 +$7.05M 4.3%
Kellanova New +83,640 +$6.75M 4.0%
Catalent Inc Added +71,534 +$4.33M 3.0%
Avangrid Inc Trimmed −105,119 −$3.76M 2.0%
SR Silk Rd Med Inc Exited −129,871 −$3.51M —
Txnm Energy Inc Trimmed −74,270 −$3.25M 1.5%
IT Ishares Tr Exited −52,500 −$2.94M —

Showing the 10 largest of 75 changes.

Q2 2024

quarter ended June 30, 2024 · filed August 08, 2024

Company Action Shares changed Value of change % of portfolio
Everbridge Inc Exited −413,381 −$14.4M —
PN Pioneer Nat Res Co Exited −46,420 −$12.2M —
EG Endeavor Group Hldgs Inc Added +338,057 +$9.14M 15.0%
LM Liberty Media Corp Del Added +371,337 +$8.23M 11.3%
Hashicorp Inc New +169,963 +$5.73M 3.7%
Stericycle Inc New +78,909 +$4.59M 3.0%
SR Silk Rd Med Inc New +129,871 +$3.51M 2.3%
Zuora Inc New +349,259 +$3.47M 2.2%
Tripadvisor Inc Trimmed −166,933 −$2.97M 0.4%
IT Ishares Tr New +52,500 +$2.94M 1.9%

Showing the 10 largest of 71 changes.

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