Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

Bain Capital GSS Investment Corp.

CIK 0002064355BCSSBCSS-UNBCSS-WT· quarter ending 2026-06-30
Shares outstanding
58,400,000
Held by 13F filers
2,334,089
selection includes debt or preferreds — no % of shares outstanding
Holders
14
-3 vs 2026-03-31 · 2 new, 5 exited
Value
$24.2M
shares -41.6% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-13, as of 2026-08-11)

ClassListedShares outstandingHeld by 13F filers% of classHoldersCUSIP
Class AOrdinary Shares—46,900,000——
Common Class B—11,500,000——
Not matched to a class41,475,470—G0R78B106

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine
CountCUSIPClass (as filers write it)HoldersShares heldClass shares% of classValueOptionsMapped via
G0R78B106ORD CL A5941,475,470——$425.9M2 call / 0 put13DGholders →
G0R78B122COMnot common142,334,089——$24.2M—13DGholders →
G0R78B114*W EXP 01/01/202not common426,791,149——$5.2M2 call / 0 putprefixholders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (14 of 14 · G0R78B122)

change vs 2026-03-31
#FilerShares / principal% of classValueChange
1TORONTO DOMINION BANK808,300—$8.4M+324,358 (+67.0%)
2BlueCrest Capital Management Ltd450,000—$4.7M—
3LMR Partners LLP300,000—$3.1M—
4Westchester Capital Management, LLC250,000—$2.6M—
5Walleye Capital LLC200,000—$2.1M—
6BOOTHBAY FUND MANAGEMENT, LLC75,000—$776K—
7Parallax Volatility Advisers, L.P.58,585—$606KNEW
8HRT FINANCIAL LP52,001—$538K+2,965 (+6.0%)
9READYSTATE ASSET MANAGEMENT LP49,386—$511K—
10Clear Street Group Inc.48,289—$500K+2,937 (+6.5%)
11SkyView Investment Advisors, LLC25,100—$260KNEW
12OMERS ADMINISTRATION Corp10,000—$104K—
13UBS Group AG7,297—$76K+14 (+0.2%)
14GLAZER CAPITAL, LLC131—$1K—
Exited since 2026-03-31 (5 filers; largest 5 shown)
Alberta Investment Management Corp−1,600,000
Jain Global LLC−250,000
WOLVERINE ASSET MANAGEMENT LLC−150,000
Diametric Capital, LP−58,585
PRELUDE CAPITAL MANAGEMENT, LLC−14,826

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting personFormFiledEventShares% of class
Amos MeronSCHEDULE 13G/A2026-05-152026-03-314,340,6419.26%
Empyrean Capital Partners, LPSCHEDULE 13G/A2026-05-152026-03-314,340,6419.26%
Fort Baker Capital, LLCSCHEDULE 13G/A2026-05-152026-03-313,981,2528.5%
Fort Baker Capital Management LPSCHEDULE 13G/A2026-05-152026-03-313,981,2528.5%
Steven Patrick PigottSCHEDULE 13G/A2026-05-152026-03-313,981,2528.5%
Adage Capital Management, L.P.SCHEDULE 13G2026-02-122025-12-313,000,0006.4%
Phillip GrossSCHEDULE 13G2026-02-122025-12-313,000,0006.4%
Robert AtchinsonSCHEDULE 13G2026-02-122025-12-313,000,0006.4%
Bain Capital GSS Investment Sponsor LLCSCHEDULE 13G2025-10-152025-10-0112,370,00021.18%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.