MBVIW · M3-Brigade Acquisition VI Corp. · Holdings

$0.26 +0.01 (+2.00%) At close · Oct 27

Market Cap

$442.34M

43.12M

Volume · Oct 27 3000 Avg daily vol (3M) 5456

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 MBVIW: 13F, 13D and 13G, insiders and funds →

Recent SEC filings are still being reconciled. Holder totals and changes may be incomplete until processing catches up.

Quarter:

Holders: 48

Total Value: $3,304,545

Total Shares: 9,372,909

Institutional Ownership Trend

3 quarters

Holder Concentration

Across 48 13F filers · Δ vs Mar 31, 2026

Top Holder

7.6%

+0.7 pts

Top 5

30.0%

+2.5 pts

Top 10

52.2%

+4.5 pts

HHI

405

Broadly held+40

Who Holds MBVIW

Last 3 quarters through Jun 30, 2026

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: 46 filers, like-for-like change -0.8%; actively managed books -0.8%.

Holder type	Share	Filers	Change	New	Exited
Registered adviser	62.3%	32	-2.1%	2	0
Exempt adviser	2.2%	1	0.0%	0	0
Adviser	1.2%	1	+75.4%	0	0
Bank	0.0%	0	-100.0%	0	1
Insurer	0.0%	0	-100.0%	0	1
Broker-dealer	5.3%	1	+7.7%	0	0
Benefit plan	2.4%	1	0.0%	0	0
Non-US	15.9%	4	-0.3%	0	1
Unknown	10.7%	6	-0.2%	0	0

Style	Share	Filers	Change	New	Exited
Systematic-like	5.5%	3	+0.9%	0	0
Concentrated	12.3%	6	+2.4%	1	0
Diversified active	82.3%	37	-1.4%	1	3

Turnover	Share	Filers	Change	New	Exited
Low turnover	1.4%	2	-0.9%	0	1
Medium turnover	56.7%	23	-1.3%	1	2
High turnover	39.4%	18	-2.2%	0	0
Unknown	2.6%	3	+45.5%	1	0

Holding horizon	Share	Filers	Change	New	Exited
Short horizon	42.8%	18	+0.1%	1	0
Medium horizon	15.5%	4	+2.5%	0	0
Long horizon	17.4%	8	-2.3%	1	1
Unknown	24.4%	16	-3.5%	0	2

13F book size	Share	Filers	Change	New	Exited
Under $1B	22.2%	12	-1.3%	0	1
$1B to $10B	42.1%	19	-0.1%	1	1
$10B to $100B	34.2%	14	-1.5%	1	0
$100B or more	1.4%	1	-0.8%	0	1

Client base	Share	Filers	Change	New	Exited
Individuals and high net worth	0.4%	1	new	1	0
Pooled investment vehicles	56.7%	27	-3.1%	1	0
Registered funds and BDCs	3.0%	3	+2.1%	0	0
Other investment advisers	2.2%	1	0.0%	0	0
Unknown	37.7%	14	+1.2%	0	3

Private funds	Share	Filers	Change	New	Exited
Hedge funds	60.4%	29	-2.9%	1	0
Private equity funds	2.2%	1	0.0%	0	0
Real estate funds	0.4%	1	new	1	0
Other private funds	0.9%	1	0.0%	0	0
No private funds	0.5%	1	+15.2%	0	0
Unknown	35.5%	13	+1.3%	0	3

Location	Share	Filers	Change	New	Exited
United States	69.5%	36	-1.7%	1	1
Outside the US	30.5%	10	+1.1%	1	2

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

46 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

2.17% of filers hold it in their top 10

Mar 31, 2026: 1

Holders above 5%

median weight 0.001%

Mar 31, 2026: 0

Crowding

—

shares outstanding is an issuer-wide count, not one listing's

Private-fund advisers

—

of shares outstanding

Institutional ownership

—

shares outstanding is an issuer-wide count, not one listing's

Top 10 holders

48.2%

of 13F shares, Herfindahl 0.036

Active holders

-0.8%

like-for-like share change of active filers

5% stakes on record

0 13D, 0 13G

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).

Shared Holders

Companies MBVIW's active holders also own, quarter ended Jun 30, 2026

#	Company	Shared holders	Similarity
1	BDCI BTC Development Corp.	14	0.647
2	JACS Jackson Acquisition Co II	14	0.599
3	IRHO Iron Horse Acquisition II Corp.	14	0.599
4	MEVO M Evo Global Acquisition Corp II	15	0.588
5	CRAN Crane Harbor Acquisition Corp. II	15	0.577
6	MLAA Mountain Lake Acquisition Corp. II	15	0.577
7	EVOX Evolution Global Acquisition Corp	14	0.573
8	DMII Drugs Made In America Acquisition II Corp.	17	0.572
9	MESH Meshflow Acquisition Corp	14	0.560
10	ALOV Aldabra 4 Liquidity Opportunity Vehicle, Inc.	13	0.556

Shareholder Targets

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

Found through its holder-overlap peers: BDCI, JACS, IRHO, MEVO, CRAN, MLAA, EVOX, DMII, MESH, ALOV, ARCI, JENA, HACQ, HCIC, EVAC, RNGT, TVAI, ZKP, KEYY, NPAC. 58 filers in all.

#	Filer	In peers	Of book	Largest peers
1	Fort Baker Capital Management LP Registered adviser, Diversified active	$48,415,475 5 held	4.71%	CRAN, MLAA, KEYY
2	Karpus Management, Inc. Adviser, Diversified active	$40,193,288 6 held	1.16%	DMII, TVAI, ZKP
3	HEIGHTS CAPITAL MANAGEMENT, INC Unknown, Diversified active	$30,505,632 12 held	7.51%	JACS, DMII, IRHO
4	Crossingbridge Advisors, LLC Adviser, Diversified active	$22,410,483 8 held	4.23%	DMII, JACS, MEVO
5	Jain Global LLC Registered adviser, Systematic-like	$22,040,000 3 held	0.280%	MESH, EVAC, ALOV
6	Saba Capital Management, L.P. Registered adviser, Diversified active	$21,493,029 9 held	0.660%	HACQ, RNGT, EVAC
7	DLD Asset Management, LP Registered adviser, Diversified active	$20,712,667 17 held	5.64%	EVAC, HACQ, CRAN
8	Sculptor Capital LP Registered adviser, Diversified active	$17,974,303 6 held	0.280%	EVAC, CRAN, MLAA
9	HBK INVESTMENTS L P Registered adviser, Concentrated	$17,291,044 4 held	0.250%	JENA, DMII, HACQ
10	MANGROVE PARTNERS IM, LLC Registered adviser, Diversified active	$14,192,099 4 held	0.950%	TVAI, IRHO, JACS

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

New and Sold Out count only filers that reported a 13F for both quarters: a first-time filer's book is not a buy, and a fund that has not filed, or withheld its positions under confidential treatment, has not sold.

Holder count: -1

Institutional value: +4.8%

Shares held: +0.6%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mid HIGHBRIDGE CAPITAL MANAGEMENT LLC	+125,085	658,345
Small Lineage Point Capital LP	+43,000	100,000
Large PEAK6 LLC	+32,136	448,803
Mid Polar Asset Management Partners Inc.	+5,392	372,058
Small Bulldog Investors, LLP	+5,079	38,411

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Large ADAGE CAPITAL PARTNERS GP, L.L.C.	−70,795	147,766
Mid Shaolin Capital Management LLC	−68,455	401,528
Large Parallax Volatility Advisers, L.P.	−32,136	200,000
Large Schonfeld Strategic Advisors LLC	−7,500	22,500
Mid WOLVERINE ASSET MANAGEMENT LLC	−3,000	72,666

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)	Open
Large Arax Advisory Partners	37,000	$14,800
Mid Kryger Capital LLC	25,888	$10,355

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mid BERKLEY W R CORP	31,172	$10,756
Small PenderFund Capital Management Ltd.	3,461	$1,194
Mega ROYAL BANK OF CANADA	1,000	$0

Filter: New 2 Increased 5 Reduced 7 Sold out 3 Unchanged 34

Holder type: Registered adviser 34 Exempt adviser 1 Adviser 1 Broker-dealer 1 Benefit plan 1 Non-US 4 Unknown 6

Showing 48 of 48

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

HIGHBRIDGE CAPITAL MANAGEMENT LLC MBVIW

$250,171

7.57%

658,345

BOOTHBAY FUND MANAGEMENT, LLC MBVIW

$206,328

6.24%

20,368

Alberta Investment Management Corp MBVIW

$193,333

5.85%

483,333

PEAK6 LLC MBVIW

$179,521

5.43%

448,803

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PEAK6 Investments LLC joint	448,803	$179,521	100.0%	Defined

Shaolin Capital Management LLC MBVIW

$160,611

4.86%

401,528

Polar Asset Management Partners Inc. MBVIW

$148,823

4.50%

372,058

TENOR CAPITAL MANAGEMENT Co., L.P. MBVIW

$146,666

4.44%

366,666

PICTON MAHONEY ASSET MANAGEMENT MBVIW

$146,666

4.44%

366,666

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND MBVIW

$146,666

4.44%

366,666

MMCAP International Inc. SPC MBVIW

$146,666

4.44%

366,666

Magnetar Financial LLC MBVIW

$146,666

4.44%

366,665

AQR Arbitrage LLC MBVIW

$144,835

4.38%

381,146

Linden Advisors LP MBVIW

$143,000

4.33%

366,666

MILLENNIUM MANAGEMENT LLC MBVIW

$124,766

3.78%

311,916

CSS LLC/IL MBVIW

$82,899

2.51%

207,248

OMERS ADMINISTRATION Corp MBVIW

$80,000

2.42%

200,000

Parallax Volatility Advisers, L.P. MBVIW

$80,000

2.42%

200,000

Radcliffe Capital Management, L.P. MBVIW

$74,749

2.26%

191,665

Hudson Bay Capital Management LP MBVIW

$73,333

2.22%

183,333

Periscope Capital Inc. MBVIW

$72,293

2.19%

180,732

ADAGE CAPITAL PARTNERS GP, L.L.C. MBVIW

$59,106

1.79%

147,766

BNP PARIBAS ARBITRAGE, SA MBVIW

$47,756

1.45%

119,389

RIVERNORTH CAPITAL MANAGEMENT, LLC MBVIW

$46,609

1.41%

133,169

ARISTEIA CAPITAL, L.L.C. MBVIW

$45,500

1.38%

116,666

Lineage Point Capital LP MBVIW

$40,000

1.21%

100,000

GABELLI & Co INVESTMENT ADVISERS, INC. MBVIW

$35,920

1.09%

89,800

Clear Street Group Inc. MBVIW

$35,785

1.08%

89,462

Davidson Kempner Capital Management LP MBVIW

$33,333

1.01%

83,333

GABELLI FUNDS LLC MBVIW

$30,746

0.93%

76,866

WOLVERINE ASSET MANAGEMENT LLC MBVIW

$29,066

0.88%

72,666

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wolverine Holdings, LLC	72,666	$29,066	100.0%	Defined

MOORE CAPITAL MANAGEMENT, LP MBVIW

$26,667

0.81%

66,667

WHITEBOX ADVISORS LLC MBVIW

$20,000

0.61%

50,000

Bulldog Investors, LLP MBVIW

$15,364

0.46%

38,411

Arax Advisory Partners MBVIW

$14,800

0.45%

37,000

Cable Car Capital, LP MBVIW

$13,334

0.40%

33,334

K2 PRINCIPAL FUND, L.P. MBVIW

$13,333

0.40%

33,333

TIG Advisors, LLC MBVIW

$13,332

0.40%

33,330

Kryger Capital LLC MBVIW

$10,355

0.31%

25,888

Walleye Capital LLC MBVIW

$9,663

0.29%

24,157

Schonfeld Strategic Advisors LLC MBVIW

$9,000

0.27%

22,500

Governors Lane LP MBVIW

$6,659

0.20%

16,648

GLAZER CAPITAL, LLC MBVIW

$155

0.00%

386,872

Mint Tower Capital Management B.V. MBVIW

$67

0.00%

166,666

Kepos Capital LP MBVIW

0.00%

7,866

Verition Fund Management LLC MBVIW

—

473,521

COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS MBVIW

—

38,177

Context Capital Management, LLC MBVIW

—

263,766

Wealthspring Capital LLC MBVIW

—

185,186

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	1,000	$0	—	Defined

Key facts CIK 2073928 CUSIP G63221108 Visit website