Who owns M3-Brigade Acquisition VI Corp.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of MBVIU from SEC Form 13F filings across 16 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 16 institutions disclosed 2.5M shares of M3-Brigade Acquisition VI Corp. worth $25.2M — about 7.1% of shares outstanding; the largest disclosed holder is HGC Investment Management Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
16
13F holders
$25.2M
value, 2026 filers
7.1%
of shares outstanding (2.5M sh)
2
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of MBVIU's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | HGC Investment Management Inc. | 625,000 | $6.4M | 1.3% | 1.8% | 0.0% |
| 2 | TORONTO DOMINION BANK | 584,608 | $6.0M | 0.0% | 1.7% | +75.8% |
| 3 | LMR Partners LLP | 250,000 | $2.6M | 0.0% | 0.7% | 0.0% |
| 4 | READYSTATE ASSET MANAGEMENT LP | 225,000 | $2.3M | 0.1% | 0.7% | 0.0% |
| 5 | SYQUANT CAPITAL SAS | 200,000 | $2.0M | 0.5% | 0.6% | 0.0% |
| 6 | Clear Street Group Inc. | 129,549 | $1.3M | 0.0% | 0.4% | +1.9% |
| 7 | JPMORGAN CHASE & CO | 100,000 | $1.0M | 0.0% | 0.3% | 0.0% |
| 8 | Walleye Capital LLC | 100,000 | $1.0M | 0.0% | 0.3% | 0.0% |
| 9 | CITIGROUP INC | 90,000 | $933,300 | 0.0% | 0.3% | 0.0% |
| 10 | Quarry LP | 50,000 | $513,100 | 0.0% | 0.1% | 0.0% |
| 11 | Westchester Capital Management, LLC | 50,000 | $512,500 | 0.0% | 0.1% | 0.0% |
| 12 | SONA ASSET MANAGEMENT (US) LLC | 25,000 | $256,250 | 0.0% | 0.1% | 0.0% |
| 13 | Calamos Advisors LLC | 24,606 | $255,164 | 0.0% | 0.1% | 0.0% |
| 14 | FNY Investment Advisers, LLCNEW | 5,288 | $54,000 | 0.0% | 0% | new |
| 15 | Rangeley Capital, LLCNEW | 2,927 | $30,002 | 0.0% | 0% | new |
| 16 | HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 2 | $20 | 0.0% | 0% | 0.0% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.