MBVI · M3-Brigade Acquisition VI Corp. · Shareholders & Ownership
Substantial doubt about the company's ability to continue as a going concern.
“In connection with the Company's assessment of going concern considerations in accordance with ASC 205-40, "Presentation of Financial Statements - Going Concern," management has determined that the Company's projected liquidity condition raises substantial doubt about the Company's ability to continue as a going concern. Management intends to address this liquidity need through Working Capital Loans from the Sponsor or its affiliates and by completing a Business Combination; however, there can be no assurance that these plans will be successfully implemented. The financial statements do not include any adjustments that might result from the outcome of this uncertainty.”View the 10-Q filed Aug 14, 2026
Every disclosed holder of MBVI in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns MBVI
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positionsNo chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 41,187,273 | 95.51% |
| Insiders (Forms 3, 4, 5) | 0 | 0.00% |
| 13D/G-only blocks | 10,705,501 | 24.82% |
| Remaining | 8,767,774 | -20.33% |
| Registered funds (N-PORT, not summed) | 706,459 | 1.64% |
Shares outstanding: 43,125,000, the issuer's latest cover-page count restated onto today's split basis.
Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.
Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of MBVI
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
|
8,625,000 | ||
| 2 |
GOLDMAN SACHS GROUP INC
13G
CIK 886982 · Holding company · Dec 31, 2025
Rule 13d-1(b), qualified institution
|
2,080,501 | ||
| 3 |
Alberta Investment Management Corp
13F
CIK 1463559 · Non-US institution · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
1,933,333 | ||
| 4 |
GLAZER CAPITAL, LLC
13F
CIK 1076809 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
1,736,872 | ||
| 5 |
PEAK6 LLC
13F
CIK 1389958 · Broker-dealer · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
1,698,803 | ||
| 6 |
HIGHBRIDGE CAPITAL MANAGEMENT LLC
13F
CIK 919185 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,526,796 | ||
| 7 |
AQR Arbitrage LLC
13F
CIK 1167456 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
1,489,922 | ||
| 8 |
PICTON MAHONEY ASSET MANAGEMENT
13F
CIK 1539041 · Non-US institution · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
1,483,664 | ||
| 9 |
Polar Asset Management Partners Inc.
13F
CIK 1326389 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
1,472,058 | ||
| 10 |
Linden Advisors LP
13F
CIK 1279396 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
1,466,666 | ||
| 11 |
MMCAP International Inc. SPC
13F
CIK 1304857 · Unknown · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
1,466,666 | ||
| 12 |
TENOR CAPITAL MANAGEMENT Co., L.P.
13F
CIK 1346554 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
1,466,666 | ||
| 13 |
Magnetar Financial LLC
13F
CIK 1352851 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
1,466,660 | ||
| 14 |
Verition Fund Management LLC
13F
CIK 1454027 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
1,315,936 | ||
| 15 |
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
13F
CIK 1535845 · Non-US institution · Jun 30, 2026
Classes MBVI, MBVIU, MBVIW, carried, not yet filed for the newest quarter
|
1,216,666 | ||
| 16 |
ADAGE CAPITAL PARTNERS GP, L.L.C.
13F
CIK 1165408 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
1,147,766 | ||
| 17 |
Context Capital Management, LLC
13F
CIK 1301396 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
1,055,066 | ||
| 18 |
TWO SIGMA INVESTMENTS, LP
13F
CIK 1179392 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
994,317 | ||
| 19 |
METEORA CAPITAL, LLC
13F
CIK 1905106 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
987,332 | ||
| 20 |
HighTower Advisors, LLC
13F
CIK 1462245 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
888,850 | ||
| 21 |
Radcliffe Capital Management, L.P.
13F
CIK 1218275 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
860,472 | ||
| 22 |
Shaolin Capital Management LLC
13F
CIK 1766806 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
825,939 | ||
| 23 |
OMERS ADMINISTRATION Corp
13F
CIK 1053321 · Pension or benefit plan · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
800,000 | ||
| 24 |
Hudson Bay Capital Management LP
13F
CIK 1393825 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
783,333 | ||
| 25 |
WOLVERINE ASSET MANAGEMENT LLC
13F
CIK 1279891 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
704,219 | ||
| 26 |
Wealthspring Capital LLC
13F
CIK 1844495 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
702,294 | ||
| 27 |
Mint Tower Capital Management B.V.
13F
CIK 1666606 · Unknown · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
666,666 | ||
| 28 |
TORONTO DOMINION BANK
13F
CIK 947263 · Bank · Jun 30, 2026
Classes MBVI, MBVIU, carried, not yet filed for the newest quarter
|
626,408 | ||
| 29 |
HGC Investment Management Inc.
13F
CIK 1711200 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
625,000 | ||
| 30 |
Periscope Capital Inc.
13F
CIK 1695320 · Exempt reporting adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
555,732 | ||
| 31 |
RIVERNORTH CAPITAL MANAGEMENT, LLC
13F
CIK 1447578 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
532,290 | ||
| 32 |
BNP PARIBAS ARBITRAGE, SA
13F
CIK 1166588 · Non-US institution · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
520,864 | ||
| 33 |
ARISTEIA CAPITAL, L.L.C.
13F
CIK 1080171 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
466,666 | ||
| 34 |
First Trust Capital Management L.P.
13F
CIK 1604488 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
399,701 | ||
| 35 |
SONA ASSET MANAGEMENT (US) LLC
13F
CIK 1856405 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIU, carried, not yet filed for the newest quarter
|
388,069 | ||
| 36 |
GABELLI & Co INVESTMENT ADVISERS, INC.
13F
CIK 932724 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
359,200 | ||
| 37 |
First Trust Merger Arbitrage Fund
Fund
S000048195 · Registered fund · Jun 30, 2026
INVESTMENT MANAGERS SERIES TRUST II, not summed
|
343,728 | ||
| 38 |
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS
13F
CIK 1083190 · Unknown · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
338,177 | ||
| 39 |
BlueCrest Capital Management Ltd
13F
CIK 1610880 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
337,000 | ||
| 40 |
Davidson Kempner Capital Management LP
13F
CIK 1595082 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
333,333 | ||
| 41 |
CSS LLC/IL
13F
CIK 1103646 · Unknown · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
327,248 | ||
| 42 |
Parallax Volatility Advisers, L.P.
13F
CIK 1521001 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
289,781 | ||
| 43 |
GABELLI FUNDS LLC
13F
CIK 1081407 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
282,466 | ||
| 44 |
Clear Street Group Inc.
13F
CIK 1881567 · Unknown · Jun 30, 2026
Classes MBVI, MBVIU, MBVIW, carried, not yet filed for the newest quarter
|
279,011 | ||
| 45 |
Schonfeld Strategic Advisors LLC
13F
CIK 1665241 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
276,925 | ||
| 46 |
Lineage Point Capital LP
13F
CIK 2093311 · Unknown · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
271,000 | ||
| 47 |
MOORE CAPITAL MANAGEMENT, LP
13F
CIK 1448574 · Registered investment adviser · Jun 30, 2026
Classes MBVI, MBVIW, carried, not yet filed for the newest quarter
|
266,667 | ||
| 48 |
LMR Partners LLP
13F
CIK 1578621 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
250,000 | ||
| 49 |
O'Connor Alternative Investments LLC
13F
CIK 2081629 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
250,000 | ||
| 50 |
BERKLEY W R CORP
13F
CIK 11544 · Insurance company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
242,244 |
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
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