Bain Capital GSS Investment Corp. - BCSS
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Empyrean Capital Partners, LP | History | No change | 3,990,000 | 40,346 | 1.31% | 1.42% | 1 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Fort Baker Capital Management LP | History | Added to | 3,981,252 | 40,257 | 3.16% | 3.06% | 2 | +1,201,606 | 43.23% | Q1 2026 | May 15, 2026 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | History | No change | 3,000,000 | 30,335 | 0.05% | 0.05% | 3 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Sculptor Capital LP | History | No change | 1,723,855 | 17,431 | 0.18% | 0.18% | 4 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Alberta Investment Management Corp | History | No change | 1,600,000 | 16,352 | 0.1% | 0.1% | 5 | 0 | 0.0% | Q1 2026 | Apr 28, 2026 |
| Mercuria Capital Strategies, LLC | History | No change | 1,545,878 | 15,631 | 5.97% | 8.97% | 6 | 0 | 0.0% | Q1 2026 | May 06, 2026 |
| MOORE CAPITAL MANAGEMENT, LP | History | No change | 1,500,000 | 15,167 | 0.31% | 0.22% | 7 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| DAVIDSON KEMPNER CAPITAL MANAGEMENT LP | History | No change | 1,400,000 | 14,156 | 0.19% | 0.22% | 8 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| AQR Arbitrage LLC | History | Reduced | 1,149,424 | 11,622 | 0.19% | 0.25% | 9 | -35,276 | -2.98% | Q1 2026 | May 15, 2026 |
| HighTower Advisors, LLC | History | Reduced | 1,138,966 | 11,516 | 0.01% | 0.01% | 10 | -46,783 | -3.95% | Q1 2026 | May 05, 2026 |
| METEORA CAPITAL, LLC | History | Reduced | 1,098,294 | 11,105 | 0.82% | 0.94% | 11 | -10,706 | -0.97% | Q1 2026 | May 15, 2026 |
| LuminArx Capital Management LP | History | New | 1,003,379 | 10,145 | 7.45% | — | 12 | +1,003,379 | New | Q1 2026 | May 14, 2026 |
| ARISTEIA CAPITAL, L.L.C. | History | No change | 1,000,000 | 10,111 | 0.21% | 0.22% | 13 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Polar Asset Management Partners Inc. | History | No change | 1,000,000 | 10,111 | 0.2% | 0.13% | 14 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Ghisallo Capital Management LLC | History | No change | 1,000,000 | 10,111 | 0.28% | 0.46% | 15 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Reduced | 957,560 | 9,682 | 0.0% | 0.01% | 16 | -358,440 | -27.24% | Q1 2026 | May 15, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | No change | 854,756 | 8,643 | 0.01% | 0.01% | 17 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| J. Goldman & Co LP | History | Reduced | 840,000 | 7,170 | 0.21% | 0.26% | 18 | -315,001 | -27.27% | Q1 2026 | May 15, 2026 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | History | No change | 700,000 | 7,078 | 0.01% | 0.01% | 19 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| PICTON MAHONEY ASSET MANAGEMENT | History | No change | 700,000 | 7,078 | 0.05% | 0.05% | 20 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| Decagon Asset Management LLP | History | Added to | 656,944 | 6,642 | 1.72% | 2.19% | 21 | +91,483 | 16.18% | Q1 2026 | May 15, 2026 |
| LINDEN ADVISORS LP | History | No change | 600,000 | 6,067 | 0.03% | 0.04% | 22 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Shaolin Capital Management LLC | History | Added to | 567,433 | 5,737 | 0.21% | 0.11% | 23 | +217,433 | 62.12% | Q1 2026 | May 15, 2026 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | History | New | 546,251 | 5,523 | 0.0% | — | 24 | +546,251 | New | Q1 2026 | May 13, 2026 |
| Saba Capital Management, L.P. | History | No change | 535,580 | 5,415 | 0.15% | 0.16% | 25 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| TORONTO DOMINION BANK | History | Reduced | 508,509 | 5,194 | 0.01% | 0.01% | 26 | -78,099 | -13.31% | Q1 2026 | May 15, 2026 |
| Jain Global LLC | History | No change | 500,000 | 5,087 | 0.02% | 0.02% | 27 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Lighthouse Investment Partners, LLC | History | No change | 500,000 | 5,055 | 0.18% | 0.15% | 28 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| Boussard & Gavaudan Investment Management LLP | History | No change | 500,000 | 5,050 | 0.48% | 0.38% | 29 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Verition Fund Management LLC | History | Reduced | 473,200 | 4,784 | 0.03% | 0.02% | 30 | -19,900 | -4.04% | Q1 2026 | May 15, 2026 |
| Lineage Point Capital LP | History | No change | 470,000 | 4,752 | 1.16% | 1.8% | 31 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| BlueCrest Capital Management Ltd | History | No change | 450,000 | 4,599 | 0.27% | 0.14% | 32 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Magnetar Financial LLC | History | No change | 450,000 | 4,545 | 0.05% | 0.04% | 33 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| PERISCOPE CAPITAL INC. | History | Reduced | 425,000 | 4,297 | 0.48% | 0.61% | 34 | -100,000 | -19.05% | Q1 2026 | May 13, 2026 |
| CSS LLC/IL | History | Added to | 387,390 | 3,917 | 0.19% | 0.0% | 35 | +377,390 | 3773.9% | Q1 2026 | May 15, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Added to | 359,100 | 3,631 | 0.0% | 0.0% | 36 | +43,800 | 13.89% | Q1 2026 | May 12, 2026 |
| TENOR CAPITAL MANAGEMENT Co., L.P. | History | No change | 350,000 | 3,539 | 0.05% | 0.05% | 37 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Radcliffe Capital Management, L.P. | History | Added to | 338,446 | 3,422 | 0.26% | 0.15% | 38 | +73,753 | 27.86% | Q1 2026 | May 15, 2026 |
| GLAZER CAPITAL, LLC | History | Added to | 335,131 | 3,388 | 0.07% | 0.08% | 39 | +39,879 | 13.51% | Q1 2026 | May 14, 2026 |
| Hudson Bay Capital Management LP | History | Reduced | 310,521 | 3,139 | 0.01% | 0.01% | 40 | -89,479 | -22.37% | Q1 2026 | May 13, 2026 |
| Bulldog Investors, LLP | History | Added to | 308,241 | 3,116 | 0.7% | 0.67% | 41 | +11,662 | 3.93% | Q1 2026 | May 08, 2026 |
| LMR Partners LLP | History | No change | 300,000 | 3,066 | 0.01% | 0.01% | 42 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | History | No change | 300,000 | 3,030 | 0.1% | 0.1% | 43 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| CANTOR FITZGERALD, L. P. | History | New | 297,361 | 3,006 | 0.04% | — | 44 | +297,361 | New | Q1 2026 | May 15, 2026 |
| DLD Asset Management, LP | History | Added to | 276,045 | 2,791 | 0.25% | 0.19% | 45 | +20,000 | 7.81% | Q1 2026 | May 13, 2026 |
| Centiva Capital, LP | History | Added to | 262,500 | 2,654 | 0.02% | 0.0% | 46 | +237,500 | 950.0% | Q1 2026 | May 14, 2026 |
| Westchester Capital Management, LLC | History | No change | 250,000 | 2,552 | 0.12% | 0.11% | 47 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Schonfeld Strategic Advisors LLC | History | No change | 249,876 | 2,526 | 0.02% | 0.01% | 48 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | History | No change | 233,150 | 2,357 | 0.01% | 0.01% | 49 | 0 | 0.0% | Q1 2026 | May 01, 2026 |
| Clear Street Group Inc. | History | Reduced | 229,259 | 2,323 | 0.01% | 0.01% | 50 | -27,064 | -10.56% | Q1 2026 | May 15, 2026 |
| Walleye Capital LLC | History | No change | 200,000 | 2,044 | 0.01% | 0.01% | 51 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| K2 PRINCIPAL FUND, L.P. | History | New | 200,000 | 2,022 | 0.14% | — | 53 | +200,000 | New | Q1 2026 | May 14, 2026 |
| HBK INVESTMENTS L P | History | No change | 200,005 | 2,022 | 0.02% | 0.02% | 52 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| CITIGROUP INC | History | No change | 175,000 | 1,769 | 0.0% | 0.0% | 54 | 0 | 0.0% | Q1 2026 | May 11, 2026 |
| WOLVERINE ASSET MANAGEMENT LLC | History | New | 150,000 | 1,533 | 0.01% | — | 55 | +150,000 | New | Q1 2026 | May 04, 2026 |
| First Trust Capital Management L.P. | History | New | 149,995 | 1,516 | 0.08% | — | 58 | +149,995 | New | Q1 2026 | May 14, 2026 |
| BERKLEY W R CORP | History | No change | 149,955 | 1,516 | 0.08% | 0.07% | 56 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Context Capital Management, LLC | History | No change | 150,000 | 1,516 | 0.04% | 0.04% | 57 | 0 | 0.0% | Q1 2026 | May 07, 2026 |
| READYSTATE ASSET MANAGEMENT LP | History | Added to | 107,286 | 1,090 | 0.05% | 0.02% | 59 | +57,900 | 117.24% | Q1 2026 | May 15, 2026 |
| SONA ASSET MANAGEMENT (US) LLC | History | New | 102,723 | 1,038 | 0.02% | — | 60 | +102,723 | New | Q1 2026 | May 15, 2026 |
| Virtu Financial LLC | History | Added to | 98,464 | 996 | 0.04% | 0.02% | 61 | +45,303 | 85.22% | Q1 2026 | May 14, 2026 |
| BOOTHBAY FUND MANAGEMENT, LLC | History | No change | 75,000 | 766 | 0.01% | 0.01% | 62 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| HRT FINANCIAL LP | History | Added to | 69,989 | 712 | 0.0% | 0.0% | 63 | +19,782 | 39.4% | Q1 2026 | May 14, 2026 |
| Diametric Capital, LP | History | Reduced | 58,585 | 599 | 0.16% | 0.16% | 64 | -1,000 | -1.68% | Q1 2026 | May 15, 2026 |
| JPMORGAN CHASE & CO | History | No change | 55,075 | 556 | 0.0% | 0.0% | 65 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| Galaxy Digital Inc. | History | New | 50,000 | 505 | 0.04% | — | 66 | +50,000 | New | Q1 2026 | May 14, 2026 |
| O'Connor Alternative Investments LLC | History | New | 50,000 | 505 | 0.04% | — | 67 | +50,000 | New | Q1 2026 | May 15, 2026 |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | History | No change | 50,000 | 504 | 0.06% | 0.06% | 68 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| JANE STREET GROUP, LLC | History | New | 24,810 | 250 | 0.0% | — | 69 | +24,810 | New | Q1 2026 | May 12, 2026 |
| STATE OF WISCONSIN INVESTMENT BOARD | History | Reduced | 24,000 | 242 | 0.0% | 0.0% | 70 | -1,000 | -4.0% | Q1 2026 | May 15, 2026 |
| Mint Tower Capital Management B.V. | History | No change | 20,000 | 202 | 0.02% | 0.02% | 71 | 0 | 0.0% | Q1 2026 | May 04, 2026 |
| PRELUDE CAPITAL MANAGEMENT, LLC | History | No change | 14,826 | 151 | 0.01% | 0.01% | 72 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| OMERS ADMINISTRATION Corp | History | No change | 10,000 | 102 | 0.0% | 0.0% | 73 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| PenderFund Capital Management Ltd. | History | New | 10,000 | 101 | 0.02% | — | 74 | +10,000 | New | Q1 2026 | May 15, 2026 |
| UBS Group AG | History | Added to | 7,283 | 74 | 0.0% | 0.0% | 75 | +469 | 6.88% | Q1 2026 | May 05, 2026 |
| Diameter Capital Partners LP | History | Closed out | 0 | 0 | — | 1.87% | — | -2,000,000 | -100.0% | Q1 2026 | May 15, 2026 |
| HGC Investment Management Inc. | History | Closed out | 0 | 0 | — | 0.87% | — | -400,000 | -100.0% | Q1 2026 | May 15, 2026 |
| Ilex Capital Partners (UK) LLP | History | Closed out | 0 | 0 | — | 0.06% | — | -200,000 | -100.0% | Q1 2026 | May 15, 2026 |
| StoneX Group Inc. | History | Closed out | 0 | 0 | — | 0.02% | — | -40,988 | -100.0% | Q1 2026 | May 14, 2026 |
| SYQUANT CAPITAL SAS | History | Closed out | 0 | 0 | — | 0.02% | — | -20,000 | -100.0% | Q1 2026 | Apr 10, 2026 |