Bain Capital GSS Investment Corp. (BCSS) shareholders
BCSSNYSEBlank ChecksFiscal year ends December 31Also trades as BCSS.UN, BCSS.WT
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Nov 13, 2026
$10.25+0.01 (+0.10%)
Close on Nov 13, 2026Market cap $598.60MP/E –Yield –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
88.4%
41M of 47M shares
Institutional holders
59
4 new, 7 sold out
Net institutional buying
2M
In Q2 2026
Insider trades, 12 months
0 buys · 0 sales
Open-market trades only
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Bain Capital GSS Investment Sponsor LLC | 12,370,000 | 21.18% | 13G (passive) | Oct 1, 2025 |
| Amos Meron Joint filing with Empyrean Capital Partners, LP (9.26%) | 4,340,641 | 9.26% | 13G (passive) amendment | Mar 31, 2026 |
| Empyrean Capital Partners, LP Joint filing with Amos Meron (8.50%) | 3,990,000 | 8.50% | 13G (passive) | Dec 31, 2025 |
| Fort Baker Capital Management LP Joint filing with Steven Patrick Pigott (8.50%), Fort Baker Capital, LLC (8.50%) | 3,981,252 | 8.50% | 13G (passive) amendment | Mar 31, 2026 |
| Adage Capital Management, L.P. Joint filing with Robert Atchinson (6.40%), Phillip Gross (6.40%) | 3,000,000 | 6.40% | 13G (passive) | Dec 31, 2025 |
| Fort Baker Capital, LLC Joint filing with Fort Baker Capital Management LP (5.90%), Steven Patrick Pigott (5.90%) | 2,779,646 | 5.90% | 13G (passive) | Dec 31, 2025 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of BCSS | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Fort Baker Capital Management LP | 4,248,685 | 9.06% | $43.63M | +267,433 | 3.19% |
| Empyrean Capital Partners, LP | 3,990,000 | 8.51% | $40.98M | – | 1.35% |
| Adage Capital Partners Gp, L.L.C. | 3,000,000 | 6.40% | $30.81M | – | 0.04% |
| Sculptor Capital LP | 1,723,855 | 3.68% | $17.70M | – | 0.14% |
| Alberta Investment Management Corp | 1,600,000 | 3.41% | $16.43M | New | 0.09% |
| Mercuria Capital Strategies, LLC | 1,545,878 | 3.30% | $15.88M | – | 9.74% |
| Moore Capital Management, LP | 1,500,000 | 3.20% | $15.41M | – | 0.23% |
| J. Goldman & Co LP | 1,481,156 | 3.16% | $15.21M | +781,156 | 0.39% |
| Davidson Kempner Capital Management LP | 1,400,000 | 2.99% | $14.38M | – | 0.17% |
| AQR Arbitrage LLC | 1,184,099 | 2.52% | $12.16M | +34,675 | 0.17% |
| HighTower Advisors, LLC | 1,081,073 | 2.31% | $11.10M | −57,893 | 0.01% |
| Polar Asset Management Partners Inc. | 1,050,000 | 2.24% | $10.78M | +50,000 | 0.18% |
| LuminArx Capital Management LP | 1,003,379 | 2.14% | $10.30M | – | 4.59% |
| Aristeia Capital LLC | 1,000,000 | 2.13% | $10.27M | – | 0.13% |
| Ghisallo Capital Management LLC | 1,000,000 | 2.13% | $10.27M | – | 0.20% |
| Meteora Capital, LLC | 953,237 | 2.03% | $9.79M | −145,057 | 0.81% |
| Millennium Management LLC | 857,600 | 1.83% | $8.81M | −99,960 | 0.00% |
| Two Sigma Investments, LP | 854,756 | 1.82% | $8.78M | – | 0.01% |
| Healthcare Of Ontario Pension Plan Trust Fund | 700,000 | 1.49% | $7.19M | – | 0.01% |
| Picton Mahoney Asset Management | 700,000 | 1.49% | $7.19M | – | 0.05% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 59 | 41M | 88.4% | 4 / 10 | 12 / 7 | 4M | 3M |
| Q1 2026 | 63 | 40M | 85.7% | 17 / 11 | 10 / 2 | 11M | 1M |
| Q4 2025 | 49 | 30M | 63.9% | 49 / 0 | 0 / 0 | 30M | 0M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
2 funds held BCSS in Q2 2026, 0% of their shares through ETFs. Each fund counts once per quarter, from its quarter-end report.
| Fund | Shares | % of BCSS | Value | % of fund | As of |
|---|---|---|---|---|---|
| First Trust Merger Arbitrage Fund | 128,245 | 0.27% | $1.32M | 0.08% | Jun 30, 2026 |
| First Trust Multi-Strategy Fund | 20,965 | 0.04% | $215.31K | 0.02% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Angelo Rocco Rufino | Chief Executive Officer, Director | – | – | Oct 1, 2025 |
| Patrick M. Dury | Chief Financial Officer | – | – | Oct 1, 2025 |
| Jeffrey Joonsu Chung | Chief Operating Officer | – | – | Oct 1, 2025 |
| Ruchit Shah | Director | – | – | Feb 13, 2026 |
| Michael Ewing Purves | Director | – | – | Dec 22, 2025 |
| Barnaby Thomas Patrick Lyons | Director | – | – | Oct 1, 2025 |
| David Jeffrey Greenwald | Director | – | – | Oct 1, 2025 |
| Capital GSS Investment Sponsor LLC Bain | 10% owner | 12,340,000 | 26.31% | Dec 22, 2025 |
Short interest
Shares sold short and not yet bought back, as of Oct 30, 2026 (FINRA, reported twice a month)
Short % of float
0.01%
0M shares short
Days to cover
1.0
At 0M shares a day
Change since last report
-3.2%
From 0M shares
Short volume, 20 days
4.6%
Of volume reported to FINRA
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of Bain Capital GSS Investment's stock actually held short. No settlement fails above the SEC's reporting threshold in the last 90 days.
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