Bain Capital GSS Investment Corp. (BCSS) — Institutional Holders, Q2 2026
73 institutional investment managers reported a BCSS position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $453.1M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
BCSS in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- J. GoldmanAdded · +781,156 sh+$7.3M
- Centiva CapitalAdded · +400,100 sh+$3.7M
- TORONTO DOMINION BANKAdded · +355,042 sh+$3.3M
- K2 PRINCIPAL FUND, L.P.Added · +327,717 sh+$3.1M
- Alberta Investment ManagementAdded · +320,000 sh+$3.0M
Biggest sellers
- Lighthouse Investment PartnersSold out · -600,000 sh-$5.6M
- CSSSold out · -484,970 sh-$4.5M
- Mercuria Capital StrategiesTrimmed · -309,175 sh-$2.9M
- CANTOR FITZGERALD, L. P.Sold out · -297,361 sh-$2.8M
- ADAGE CAPITAL PARTNERS GP, L.L.C.Trimmed · -229,014 sh-$2.1M
BCSS 13F holders ranked 1–73 of 73
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | Fort Baker Capital Management#1 · 4,655,216 sh | 4,655,216 | $43.9M | 3.21% | +6.1% |
| 2 | Empyrean Capital Partners#2 · 4,788,000 sh | 4,788,000 | $41.5M | 1.37% | 0.0% |
| 3 | ADAGE CAPITAL PARTNERS GP, L.L.C.#3 · 3,116,393 sh | 3,116,393 | $30.9M | 0.04% | -6.8% |
| 4 | Sculptor Capital#4 · 2,068,626 sh | 2,068,626 | $18.0M | 0.15% | 0.0% |
| 5 | Alberta Investment Management#5 · 1,920,000 sh | 1,920,000 | $16.6M | 0.09% | +20.0% |
| 6 | Mercuria Capital Strategies#6 · 1,545,878 sh | 1,545,878 | $15.9M | 9.74% | -16.7% |
| 7 | MOORE CAPITAL MANAGEMENT#7 · 1,800,000 sh | 1,800,000 | $15.6M | 0.23% | 0.0% |
| 8 | J. Goldman#8 · 1,481,156 sh | 1,481,156 | $15.2M | 0.39% | +111.6% |
| 9 | DAVIDSON KEMPNER CAPITAL MANAGEMENT#9 · 1,680,000 sh | 1,680,000 | $14.6M | 0.17% | 0.0% |
| 10 | AQR Arbitrage#10 · 1,425,680 sh | 1,425,680 | $12.3M | 0.18% | +2.7% |
| 11 | HighTower Advisors#11 · 1,081,073 sh | 1,081,073 | $11.1M | 0.01% | -5.1% |
| 12 | Polar Asset Management Partners#12 · 1,250,000 sh | 1,250,000 | $10.9M | 0.18% | +4.2% |
| 13 | ARISTEIA CAPITAL, L.L.C.#13 · 1,199,998 sh | 1,199,998 | $10.4M | 0.14% | 0.0% |
| 14 | LuminArx Capital Management#14 · 1,003,379 sh | 1,003,379 | $10.3M | 4.59% | -16.7% |
| 15 | Ghisallo Capital Management#15 · 1,000,000 sh | 1,000,000 | $10.3M | 0.20% | 0.0% |
| 16 | METEORA CAPITAL#16 · 1,285,033 sh | 1,285,033 | $10.0M | 0.83% | -5.7% |
| 17 | MILLENNIUM MANAGEMENT#17 · 857,600 sh | 857,600 | $8.8M | <0.01% | -10.4% |
| 18 | TWO SIGMA INVESTMENTS#18 · 854,756 sh | 854,756 | $8.8M | <0.01% | 0.0% |
| 19 | TORONTO DOMINION BANK#19 · 945,051 sh | 945,051 | $8.5M | <0.01% | +60.2% |
| 20 | PICTON MAHONEY ASSET MANAGEMENT#20 · 840,000 sh | 840,000 | $7.3M | 0.05% | 0.0% |
| 21 | HEALTHCARE OF ONTARIO PENSION PLAN FUND#21 · 840,000 sh | 840,000 | $7.3M | 0.01% | 0.0% |
| 22 | LINDEN ADVISORS#22 · 719,998 sh | 719,998 | $6.2M | 0.03% | 0.0% |
| 23 | Centiva Capital#23 · 662,600 sh | 662,600 | $5.8M | 0.05% | +152.4% |
| 24 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#24 · 518,210 sh | 518,210 | $5.3M | <0.01% | -5.1% |
| 25 | Jain Global#25 · 600,000 sh | 600,000 | $5.2M | 0.02% | +9.1% |
| 26 | BOUSSARD & GAVAUDAN GESTION SAS#26 · 600,000 sh | 600,000 | $5.2M | 0.26% | — |
| 27 | Verition Fund Management#27 · 609,972 sh | 609,972 | $5.0M | <0.01% | +1.4% |
| 28 | Saba Capital Management, L.P.#28 · 562,892 sh | 562,892 | $4.8M | 0.12% | -12.4% |
| 29 | Magnetar Financial#29 · 540,000 sh | 540,000 | $4.7M | 0.04% | 0.0% |
| 30 | BlueCrest Capital Management Ltd#30 · 450,000 sh | 450,000 | $4.7M | 0.15% | 0.0% |
| 31 | Shaolin Capital Management#31 · 574,051 sh | 574,051 | $4.5M | 0.22% | -17.2% |
| 32 | PERISCOPE CAPITAL#32 · 564,900 sh | 564,900 | $4.5M | 0.39% | 0.0% |
| 33 | Radcliffe Capital Management, L.P.#33 · 459,447 sh | 459,447 | $4.3M | 0.32% | +19.2% |
| 34 | Lineage Point Capital#34 · 575,968 sh | 575,968 | $4.2M | 0.87% | +2.1% |
| 35 | BNP PARIBAS FINANCIAL MARKETS#35 · 422,160 sh | 422,160 | $3.7M | <0.01% | 0.0% |
| 36 | TENOR CAPITAL MANAGEMENT , L.P.#36 · 420,000 sh | 420,000 | $3.6M | 0.05% | 0.0% |
| 37 | GLAZER CAPITAL#37 · 370,341 sh | 370,341 | $3.5M | 0.09% | -6.0% |
| 38 | Hudson Bay Capital Management#38 · 310,521 sh | 310,521 | $3.2M | <0.01% | -5.7% |
| 39 | READYSTATE ASSET MANAGEMENT#39 · 307,286 sh | 307,286 | $3.2M | <0.01% | +186.4% |
| 40 | Bulldog Investors, LLP#40 · 306,885 sh | 306,885 | $3.2M | 0.69% | -0.4% |
| 41 | LMR Partners LLP#41 · 300,000 sh | 300,000 | $3.1M | 0.01% | 0.0% |
| 42 | DLD Asset Management#42 · 321,208 sh | 321,208 | $3.1M | 0.20% | +8.1% |
| 43 | HIGHBRIDGE CAPITAL MANAGEMENT#43 · 300,000 sh | 300,000 | $3.1M | 0.07% | 0.0% |
| 44 | Schonfeld Strategic Advisors#44 · 297,351 sh | 297,351 | $2.6M | <0.01% | -0.8% |
| 45 | Westchester Capital Management#45 · 250,000 sh | 250,000 | $2.6M | 0.13% | 0.0% |
| 46 | COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS#46 · 233,150 sh | 233,150 | $2.4M | 0.01% | 0.0% |
| 47 | MIZUHO SECURITIES USA#47 · 230,000 sh | 230,000 | $2.3M | 0.02% | New |
| 48 | K2 PRINCIPAL FUND, L.P.#48 · 527,717 sh | 527,717 | $2.3M | 0.17% | +163.9% |
| 49 | Walleye Capital#49 · 220,000 sh | 220,000 | $2.1M | <0.01% | 0.0% |
| 50 | HBK INVESTMENTS L P#50 · 240,006 sh | 240,006 | $2.1M | 0.02% | 0.0% |
| 51 | Clear Street Group#51 · 284,772 sh | 284,772 | $2.0M | <0.01% | -13.1% |
| 52 | CITIGROUP#52 · 175,000 sh | 175,000 | $1.8M | <0.01% | 0.0% |
| 53 | WOLVERINE ASSET MANAGEMENT#53 · 180,000 sh | 180,000 | $1.6M | 0.01% | +20.0% |
| 54 | First Capital Management L.P.#54 · 149,995 sh | 149,995 | $1.5M | 0.09% | 0.0% |
| 55 | BERKLEY W R#55 · 149,955 sh | 149,955 | $1.5M | 0.07% | -11.8% |
| 56 | BOOTHBAY FUND MANAGEMENT#56 · 129,255 sh | 129,255 | $1.3M | 0.02% | +72.3% |
| 57 | SONA ASSET MANAGEMENT (US)#57 · 102,723 sh | 102,723 | $1.1M | 0.02% | 0.0% |
| 58 | Parallax Volatility Advisers, L.P.#58 · 58,585 sh | 58,585 | $606.4K | <0.01% | New |
| 59 | JPMORGAN CHASE#59 · 55,075 sh | 55,075 | $565.6K | 0.00% | 0.0% |
| 60 | Galaxy Digital#60 · 50,000 sh | 50,000 | $513.5K | 0.03% | 0.0% |
| 61 | O'Connor Alternative Investments#61 · 50,000 sh | 50,000 | $513.5K | 0.04% | 0.0% |
| 62 | PenderFund Capital Management Ltd.#62 · 26,600 sh | 26,600 | $273.2K | 0.04% | +121.7% |
| 63 | Weiss Asset Management#63 · 392,734 sh | 392,734 | $267.1K | <0.01% | 0.0% |
| 64 | SkyView Investment Advisors#64 · 25,100 sh | 25,100 | $260.0K | 0.20% | New |
| 65 | STATE OF WISCONSIN INVESTMENT BOARD#65 · 24,000 sh | 24,000 | $246.5K | <0.01% | 0.0% |
| 66 | Mint Tower Capital Management B.V.#66 · 24,000 sh | 24,000 | $208.0K | 0.02% | 0.0% |
| 67 | Decagon Asset Management LLP#67 · 158,463 sh | 158,463 | $107.8K | 0.02% | -80.1% |
| 68 | OMERS ADMINISTRATION#68 · 10,000 sh | 10,000 | $103.5K | <0.01% | 0.0% |
| 69 | UBS Group AG#69 · 7,297 sh | 7,297 | $75.5K | 0.00% | +0.2% |
| 70 | MORGAN STANLEY#70 · 102,651 sh | 102,651 | $69.8K | 0.00% | 0.0% |
| 71 | HGC Investment Management#71 · 80,000 sh | 80,000 | $54.4K | 0.01% | 0.0% |
| 72 | HRT FINANCIAL#72 · 52,001 sh | 52,001 | $538.00 | 0.00% | -25.7% |
| 73 | Context Capital Management#73 · 180,000 sh | 180,000 | — | — | 0.0% |
Funds that sold out of BCSS in Q2 2026 (8)
Held BCSS at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| Lighthouse Investment Partners600,000 sh | 600,000 | $5.1M |
| CSS484,970 sh | 484,970 | $4.0M |
| CANTOR FITZGERALD, L. P.297,361 sh | 297,361 | $3.0M |
| Virtu Financial98,464 sh | 98,464 | $996.0K |
| Diametric Capital58,585 sh | 58,585 | $599.9K |
| JANE STREET GROUP24,810 sh | 24,810 | $250.9K |
| PRELUDE CAPITAL MANAGEMENT14,826 sh | 14,826 | $151.5K |
| Ilex Capital Partners (UK) LLP40,000 sh | 40,000 | $24.8K |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.