M3-Brigade Acquisition VI Corp.

MBVI

Exchange: Nasdaq
Industry: Blank Checks
SEC CIK: 0002073928

SEC filings (opens in a new tab)

No open-market purchases or sales by M3-Brigade Acquisition VI Corp. insiders were filed in the last 90 days; 70 institutions reported holding it in 13F filings for Q2 2026, worth $307.2M in total; no superinvestor holds it.

Other share classesMBVIU MBVIW

Q4 2025 vs. Q3 2025

How the institutions holding M3-Brigade Acquisition VI Corp. changed between Q3 2025 and Q4 2025.

All holders in Q4 2025 All holders in Q3 2025

13F holders of MBVI: Q3 2025 compared with Q4 2025
Measure	Q3 2025	Q4 2025	Change
Holders	0	60	+60
Shares	0	27.4M	+27.4M
Value	$0	$274.3M	+$274.3M

New holders (60)

Institutions that held M3-Brigade Acquisition VI Corp. at the end of Q4 2025 but not at the end of Q3 2025.

Institutions new to MBVI in Q4 2025
Institution	Shares	Value	% of portfolio
Highbridge Capital Management LLC	1,470,000	$14.7M	0.68%
Alberta Investment Management Corp	1,450,000	$14.5M	0.09%
PEAK6 LLC	1,250,000	$12.5M	0.34%
CNH Partners LLC	1,141,824	$11.4M	0.24%
Glazer Capital, LLC	1,137,264	$11.4M	0.30%
HighTower Advisors, LLC	1,133,688	$11.3M	0.01%
Linden Advisors LP	1,100,000	$11.0M	0.07%
Healthcare of Ontario Pension Plan Trust Fund	1,099,998	$11.0M	0.02%
MMCAP International Inc. SPC	1,100,000	$11.0M	1.10%
Polar Asset Management Partners Inc.	1,100,000	$11.0M	0.22%
Tenor Capital Management Co., L.P.	1,100,000	$11.0M	0.16%
Picton Mahoney Asset Management	1,099,998	$11.0M	0.12%
Adage Capital Partners GP, L.L.C.	1,000,000	$10.0M	0.02%
Two Sigma Investments, LP	994,317	$9.94M	0.01%
Verition Fund Management LLC	877,377	$8.78M	0.05%
Context Capital Management, LLC	791,300	$7.91M	0.20%
Meteora Capital, LLC	653,752	$6.54M	0.55%
Radcliffe Capital Management, L.P.	635,905	$6.36M	0.35%
Omers Administration Corp	600,000	$6.01M	0.04%
Wealthspring Capital LLC	557,505	$5.58M	1.32%
Hudson Bay Capital Management LP	550,000	$5.51M	0.03%
Shaolin Capital Management LLC	520,690	$5.21M	0.20%
Mint Tower Capital Management B.V.	500,000	$5.00M	0.63%
Periscope Capital Inc.	500,000	$5.00M	0.97%
Vivaldi Asset Management, LLC	399,999	$4.00M	0.24%
BNP Paribas Arbitrage, SA	358,167	$3.59M	0.00%
Aristeia Capital LLC	350,000	$3.50M	0.10%
Wolverine Asset Management LLC	319,998	$3.20M	0.05%
Commonwealth of Pennsylvania Public School Empls Retrmt Sys	300,000	$3.00M	0.02%
Gabelli & Co Investment Advisers, Inc.	269,400	$2.69M	0.40%
UBS Oconnor LLC	250,000	$2.50M	0.07%
Davidson Kempner Capital Management LP	250,000	$2.50M	0.04%
Berkley W R Corp	242,244	$2.42M	0.14%
Gabelli Funds LLC	230,600	$2.31M	0.02%
Clear Street Group Inc.	227,243	$2.27M	0.01%
Mizuho Securities USA LLC	200,000	$2.00M	0.03%
Moore Capital Management, LP	200,000	$2.00M	0.04%
Lineage Point Capital LP	171,000	$1.71M	0.65%
Toronto Dominion Bank	167,300	$1.67M	0.00%
Millennium Management LLC	158,250	$1.58M	0.00%
Whitebox Advisors LLC	150,000	$1.50M	0.03%
Ghisallo Capital Management LLC	100,000	$1.00M	0.04%
Cable Car Capital LLC	100,002	$1.00M	0.06%
TIG Advisors, LLC	100,000	$1.00M	0.05%
K2 Principal Fund, L.P.	100,000	$1.00M	0.10%
Bulldog Investors, LLP	100,000	$1.00M	0.22%
Virtu Financial LLC	56,501	$566.0K	0.02%
Governors Lane LP	50,000	$500.0K	0.05%
Boothbay Fund Management, LLC	49,550	$495.5K	0.01%
Centiva Capital, LP	24,999	$250.2K	0.02%
Deltec Asset Management LLC	25,000	$250.0K	0.04%
Abc Arbitrage SA	25,000	$250.0K	0.02%
UBS Group AG	22,107	$221.1K	0.00%
Evercore Wealth Management, LLC	15,999	$160.0K	0.00%
Susquehanna International Group, LLP	14,964	$149.8K	0.00%
Citadel Advisors LLC	10,953	$109.6K	0.00%
State of Wisconsin Investment Board	10,000	$100.0K	0.00%
Royal Bank of Canada	5,500	$55.0K	0.00%
FNY Investment Advisers, LLC	500	$5.00K	0.00%
Morgan Stanley	92	$920	0.00%

Sold out (0)

Institutions that held M3-Brigade Acquisition VI Corp. at the end of Q3 2025 and filed for Q4 2025 without it.

None.