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MBVI · M3-Brigade Acquisition VI Corp. · Holdings

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$10.24 +0.00 (+0.00%)
Rebalance outlook locked
Going-concern doubt — flagged Aug 14, 2026

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
Market Cap
$441.60M
Shares
43.12M
Volume · Oct 21 194 Avg daily vol (3M) 43K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP → See every holder of MBVI: 13F, 13D and 13G, insiders and funds →
Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 82
Total Value: $307,419,619
Total Shares: 42,157,534
Showing 1–100 of 134 holdings by value · page 1 of 2

Institutional Ownership Trend

5 quarters

Holder Concentration

Across 82 13F filers
Top Holder
5.1%
Sep 2025 → Jun 2026 · range 4.6% – 5.1%
of institutional value
Top 5
22.1%
Sep 2025 → Jun 2026 · range 20.3% – 22.1%
of institutional value
Top 10
40.3%
Sep 2025 → Jun 2026 · range 37.5% – 40.3%
of institutional value
HHI
285
Sep 2025 → Jun 2026 · range 261 – 285
Broadly held

Who Holds MBVI

Last 5 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 82 filers, like-for-like change +1.5%; actively managed books +1.0%; index-like books +2296.1%.

Holder type Share Filers Change
Registered adviser 61.2% 46 +1.3%
Exempt adviser 2.0% 2 0.0%
Adviser 3.0% 2 -17.7%
Bank 2.0% 4 +29.6%
Insurer 0.6% 1 -11.4%
Broker-dealer 4.1% 1 +1.9%
Benefit plan 2.0% 2 0.0%
Non-US 14.2% 6 +0.9%
Holding company 0.0% 1 -53.6%
Unknown 11.0% 17 +7.8%

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Conviction and Crowding

70 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders
1
1.43% of filers hold it in their top 10
Mar 31, 2026: 1
Holders above 5%
0
median weight 0.069%
Mar 31, 2026: 0
Crowding
—
the issuer has more than one class of common stock, so its count is the total across classes
Private-fund advisers
—
of shares outstanding
Institutional ownership
—
the issuer has more than one class of common stock, so its count is the total across classes
Top 10 holders
40.2%
of 13F shares, Herfindahl 0.028
Active holders
+0.7%
like-for-like share change of active filers
5% stakes on record
2
0 13D, 2 13G (1 institutional, 0 passive, 1 exempt)
How long holders have held it value-weighted 2.9 quarters
Under 1 year 100.0% 1 to 3 years 0.000% 3 years or more 0.000% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost
$10.06
estimated per share
Mar 31, 2026: $10.06
Quarter-end price
$10.13
implied by 13F values
Estimated gain or loss
+0.7%
price against the estimated cost
Estimated at a loss
0.000%
of costed 13F value

Estimated cost covers 98.4% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies MBVI's active holders also own, quarter ended Jun 30, 2026
# Company Shared holders
1 WENN WEN Acquisition Corp 5
2 GSHR Gesher Acquisition Corp. II 3
3 HCMA Hcm III Acquisition Corp. 3
4 XRPNU Armada Acquisition Corp. II 4
5 NPAC New Providence Acquisition Corp. III 4
6 BDCI BTC Development Corp. 3
7 EVOX Evolution Global Acquisition Corp 3
8 HACQ HCM IV Acquisition Corp. 3
9 KOYN CSLM Digital Asset Acquisition Corp III, Ltd 3
10 AACB Artius II Acquisition Inc. 3

Shareholder Targets

13F filers that own its peers but not MBVI, quarter ended Jun 30, 2026

Found through its holder-overlap peers: WENN, GSHR, HCMA, XRPNU, NPAC, BDCI, EVOX, HACQ, KOYN, AACB, SVIV, ALDF, SZZL, IACO, TACO, TACH, PACH, YCY, DRDB, IPCX. 73 filers in all.

# Filer In peers
1 Crossingbridge Advisors, LLC Adviser, Diversified active $78,750,237 12 held
2 Arrington Capital Management, LLC Registered adviser, Concentrated $60,394,320 1 held
3 GOLDMAN SACHS GROUP INC Holding company, Index-like $47,125,535 11 held
4 RLH Capital LLC Unknown, Diversified active $37,327,140 7 held
5 Harraden Circle Investments, LLC Registered adviser, Diversified active $31,934,501 2 held
6 Karpus Management, Inc. Adviser, Diversified active $28,650,933 11 held
7 Saba Capital Management, L.P. Registered adviser, Diversified active $26,671,878 4 held
8 Fort Baker Capital Management LP Registered adviser, Concentrated $21,263,740 4 held
9 MANGROVE PARTNERS IM, LLC Registered adviser, Diversified active $20,175,457 5 held
10 DLD Asset Management, LP Registered adviser, Diversified active $20,143,692 15 held

Fund Ownership of MBVI by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 0.00% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 0.00% 0
Index ETFs 0.00% 0
Active ETFs 0.02% 9,124
Active funds 1.62% 697,335
Unclassified 0.00% 0
All registered funds 1.64% 706,459
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Holder type: Registered adviser 46 Exempt adviser 2 Adviser 2 Bank 4 Insurer 1 Broker-dealer 1 Benefit plan 2 Non-US 6 Holding company 1 Unknown 17
Showing 100 of 134
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
HIGHBRIDGE CAPITAL MANAGEMENT LLC $15,466,443 5.03% 1,526,796
Alberta Investment Management Corp $14,688,500 4.78% 1,450,000
GLAZER CAPITAL, LLC $13,675,500 4.45% 1,350,000
PEAK6 LLC $12,662,500 4.12% 1,250,000
PICTON MAHONEY ASSET MANAGEMENT $11,315,189 3.68% 1,116,998
AQR Arbitrage LLC $11,231,900 3.65% 1,108,776
Linden Advisors LP $11,143,000 3.62% 1,100,000
TENOR CAPITAL MANAGEMENT Co., L.P. $11,143,000 3.62% 1,100,000
Polar Asset Management Partners Inc. $11,143,000 3.62% 1,100,000
MMCAP International Inc. SPC $11,143,000 3.62% 1,100,000
Magnetar Financial LLC $11,142,949 3.62% 1,099,995
ADAGE CAPITAL PARTNERS GP, L.L.C. $10,130,000 3.30% 1,000,000
TWO SIGMA INVESTMENTS, LP $10,072,431 3.28% 994,317
METEORA CAPITAL, LLC $10,001,673 3.25% 987,332
HighTower Advisors, LLC $9,004,050 2.93% 888,850
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND $8,610,479 2.80% 849,998
Verition Fund Management LLC $8,533,663 2.78% 842,415
Context Capital Management, LLC $8,015,869 2.61% 791,300
Radcliffe Capital Management, L.P. $6,775,014 2.20% 668,807
WOLVERINE ASSET MANAGEMENT LLC $6,397,631 2.08% 631,553
OMERS ADMINISTRATION Corp $6,078,000 1.98% 600,000
Hudson Bay Capital Management LP $6,078,000 1.98% 600,000
Wealthspring Capital LLC $5,238,304 1.70% 517,108
Mint Tower Capital Management B.V. $5,065,000 1.65% 500,000
Shaolin Capital Management LLC $4,299,283 1.40% 424,411
BNP PARIBAS ARBITRAGE, SA $4,066,941 1.32% 401,475
First Trust Capital Management L.P. $4,048,971 1.32% 399,701
RIVERNORTH CAPITAL MANAGEMENT, LLC $4,043,095 1.32% 399,121
Periscope Capital Inc. $3,798,750 1.24% 375,000
SONA ASSET MANAGEMENT (US) LLC $3,677,888 1.20% 363,069
ARISTEIA CAPITAL, L.L.C. $3,545,500 1.15% 350,000
BlueCrest Capital Management Ltd $3,413,810 1.11% 337,000
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS $3,039,000 0.99% 300,000
GABELLI & Co INVESTMENT ADVISERS, INC. $2,729,022 0.89% 269,400
Schonfeld Strategic Advisors LLC $2,577,325 0.84% 254,425
O'Connor Alternative Investments LLC $2,532,500 0.82% 250,000
Davidson Kempner Capital Management LP $2,532,500 0.82% 250,000
BERKLEY W R CORP $2,453,931 0.80% 242,244
MIZUHO SECURITIES USA LLC $2,339,270 0.76% 230,925
GABELLI FUNDS LLC $2,082,728 0.68% 205,600
D. E. Shaw & Co., Inc. $2,076,579 0.68% 204,993
MOORE CAPITAL MANAGEMENT, LP $2,026,000 0.66% 200,000
MILLENNIUM MANAGEMENT LLC $1,853,283 0.60% 182,950
Lineage Point Capital LP $1,732,230 0.56% 171,000
WHITEBOX ADVISORS LLC $1,519,500 0.49% 150,000
CSS LLC/IL $1,215,600 0.40% 120,000
Bulldog Investors, LLP $1,167,350 0.38% 115,237
Arax Advisory Partners $1,124,430 0.37% 111,000
Ghisallo Capital Management LLC $1,013,000 0.33% 100,000
TIG Advisors, LLC $1,013,000 0.33% 100,000
Parallax Volatility Advisers, L.P. $909,481 0.30% 89,781
Kryger Capital LLC $783,991 0.26% 77,393
Clear Street Group Inc. $607,800 0.20% 60,000
Governors Lane LP $506,500 0.16% 50,000
PenderFund Capital Management Ltd. $491,953 0.16% 48,564
BOOTHBAY FUND MANAGEMENT, LLC $468,016 0.15% 46,201
SUSQUEHANNA INTERNATIONAL GROUP, LLP $451,108 0.15% 44,532
TORONTO DOMINION BANK $423,434 0.14% 41,800
Virtu Financial LLC $353,040 0.11% 34,851
ABC ARBITRAGE SA $253,250 0.08% 25,000
DELTEC ASSET MANAGEMENT LLC $253,250 0.08% 25,000
Centiva Capital, LP $253,239 0.08% 24,999
HIGHBRIDGE CAPITAL MANAGEMENT LLC MBVIW $250,171 0.08% 658,345
Kepos Capital LP $239,047 0.08% 23,598
Evercore Wealth Management, LLC $162,069 0.05% 15,999
STATE OF WISCONSIN INVESTMENT BOARD $101,300 0.03% 10,000
Timelo Investment Management Inc. $101,300 0.03% 10,000
JPMORGAN CHASE & CO $99,699 0.03% 9,842
UBS Group AG $29,002 0.01% 2,863
FNY Investment Advisers, LLC $5,125 0.00% 500
MORGAN STANLEY $263 0.00% 26
LMR Partners LLP MBVIU — — 250,000
GABELLI FUNDS LLC MBVIW — — 76,866
WOLVERINE ASSET MANAGEMENT LLC MBVIW — — 72,666
Governors Lane LP MBVIW — — 16,648
PEAK6 LLC MBVIW — — 448,803
SONA ASSET MANAGEMENT (US) LLC MBVIU — — 25,000
Verition Fund Management LLC MBVIW — — 473,521
ARISTEIA CAPITAL, L.L.C. MBVIW — — 116,666
Bulldog Investors, LLP MBVIW — — 38,411
Polar Asset Management Partners Inc. MBVIW — — 372,058
RIVERNORTH CAPITAL MANAGEMENT, LLC MBVIW — — 133,169
TENOR CAPITAL MANAGEMENT Co., L.P. MBVIW — — 366,666
Arax Advisory Partners MBVIW — — 37,000
Shaolin Capital Management LLC MBVIW — — 401,528
Kryger Capital LLC MBVIW — — 25,888
HGC Investment Management Inc. MBVIU — — 625,000
MILLENNIUM MANAGEMENT LLC MBVIW — — 311,916
Clear Street Group Inc. MBVIW — — 89,462
BNP PARIBAS ARBITRAGE, SA MBVIW — — 119,389
Linden Advisors LP MBVIW — — 366,666
PICTON MAHONEY ASSET MANAGEMENT MBVIW — — 366,666
TORONTO DOMINION BANK MBVIU — — 584,608
Hudson Bay Capital Management LP MBVIW — — 183,333
CSS LLC/IL MBVIW — — 207,248
K2 PRINCIPAL FUND, L.P. MBVIW — — 33,333
Lineage Point Capital LP MBVIW — — 100,000
WHITEBOX ADVISORS LLC MBVIW — — 50,000
ADAGE CAPITAL PARTNERS GP, L.L.C. MBVIW — — 147,766
TIG Advisors, LLC MBVIW — — 33,330

Showing the top 100 of 134 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 2073928 CUSIP G63221108 13F (30d) 1 filings 1 filers Visit website