13F reference period
Q3 2026
Security Snapshot
Bain Capital GSS Investment Corp. - Class A ordinary shares, par value $0.0001 per share (BCSS) Institutional Ownership
CUSIP: G0R78B106
13F Institutional Holders and Ownership History from Q4 2025 to Q3 2026
Institutions Reporting
18
Shares (Excl. Options)
10.3M
Full value: 10,295,761 · shares · 30 Sep 2026Price
$10.30
The headline uses the Q3 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended.
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- Security type / class
- Equity / Class A ordinary shares, par value $0.0001 per share
- Symbol
- BCSS on NYSE
- All holders as of 30 Sep 2026
- Q3 2026
- Total 13F shares
- 10,295,761
- Total 13F value
- $106,030,918
- Portfolio coverage rank
- 0%
- Share change
- +1,009,715
- Value change
- +$10,396,466
- Number of holders
- 18
- Shares outstanding
- 46,875,173
- SEC-reported price per share
- $10.30
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source
Key facts
- BCSS - Bain Capital GSS Investment Corp. - Class A ordinary shares, par value $0.0001 per share is tracked under CUSIP G0R78B106.
- 18 institutions reported positions in Q3 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 59 to 18 between Q2 2026 and Q3 2026.
- SEC-reported value moved from to
$425.89M
Full value: $425,894,943 · USD · 30 Jun 2026.$106.03M
Full value: $106,030,918 · USD · 30 Sep 2026
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 18 institutions filings for Q3 2026.
Security key
G0R78B106
13F reference period
Q3 2026
13F holders
18
13D/G owners
4
CIK / CUSIP context first
Open Q3 2026 holders
BCSS full holder history
Bain Capital GSS Investment Corp. SEC filings
Bain Capital GSS Investment Corp. company facts
Bain Capital GSS Investment Corp. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP G0R78B106:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
BCSS
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Bain Capital GSS Investment Sponsor LLC | 21% | 12,370,000 | Bain Capital GSS Investment Sponsor LLC | 01 Oct 2025 | ||||
| Empyrean Capital Partners, LP | 9.3% | $43,891,694 | 4,340,641 | Empyrean Capital Partners, LP | 31 Mar 2026 | |||
| Fort Baker Capital Management LP | 8.5% | +43% | $40,257,624 | +$12,150,400 | 3,981,252 | +43% | Fort Baker Capital Management LP | 31 Mar 2026 |
| Adage Capital Management, L.P. | 6.4% | $30,390,000 | 3,000,000 | Adage Capital Management, L.P. | 31 Dec 2025 |
As of 30 Sep 2026,
18
institutional investors reported holding
shares of
Bain Capital GSS Investment Corp. - Class A ordinary shares, par value $0.0001 per share (BCSS).
This represents
22%
of the company’s total
outstanding shares.
10.3M
Full value: 10,295,761 · shares · 30 Sep 202646.88M
Full value: 46,875,173 · shares · Stored outstanding share count13F concentration
Top 19 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
22%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Alberta Investment Management Corp | 3.4% | 1,600,000 | 0% | 0.09% | $16,480,000 |
| Mercuria Capital Strategies, LLC | 3.3% | 1,545,878 | 0% | 9.1% | $15,922,543 |
| HighTower Advisors, LLC | 2.3% | 1,061,973 | -1.8% | 0.01% | $10,938,322 |
| LuminArx Capital Management LP | 2.1% | 1,003,379 | 14% | $10,334,804 | |
| Verition Fund Management LLC | 1.8% | 865,338 | +83% | 0.07% | $8,912,981 |
| PICTON MAHONEY ASSET MANAGEMENT | 1.5% | 711,000 | +1.6% | 0.06% | $7,323,303 |
| BOUSSARD & GAVAUDAN GESTION SAS | 1.1% | 500,000 | 0% | 0.92% | $5,150,000 |
| Magnetar Financial LLC | 0.96% | 450,000 | 0% | 0.05% | $4,635,000 |
| BNP PARIBAS FINANCIAL MARKETS | 0.77% | 359,100 | 0% | $3,698,730 | |
| Hudson Bay Capital Management LP | 0.66% | 310,521 | 0% | 0.02% | $3,198,366 |
| Cannell & Spears LLC | 0.66% | 310,209 | 0.06% | $3,195,153 | |
| DLD Asset Management, LP | 0.64% | 300,000 | 0% | 0.29% | $3,090,000 |
| MIZUHO SECURITIES USA LLC | 0.64% | 299,998 | +30% | 0.05% | $3,074,556 |
| Westchester Capital Management, LLC | 0.53% | 250,000 | 0.12% | $2,575,000 | |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 0.48% | 226,936 | -2.7% | 0.01% | $2,337,441 |
| K2 PRINCIPAL FUND, L.P. | 0.43% | 201,434 | +0.72% | 0.32% | $2,074,770 |
| Context Capital Management, LLC | 0.32% | 150,000 | 0% | 0.03% | $1,545,000 |
| First Trust Capital Management L.P. | 0.32% | 149,995 | 0% | 0.07% | $1,544,949 |
| LuminArx Capital Management LP | 0.43% | 200,675 | $130,419 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
4
Headline period
Q3 2026
Rows shown
1-4 of 4
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q3 | 10,295,761 | $106,030,918 | +$10,396,466 | $10.30 | 18 |
| 2026 Q2 | 41,475,470 | $425,894,943 | +$13,660,316 | $10.27 | 59 |
| 2026 Q1 | 40,172,756 | $406,202,081 | +$102,370,619 | $10.11 | 63 |
| 2025 Q4 | 29,955,736 | $302,170,644 | +$294,254,820 | $10.08 | 49 |