Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in MBAV held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | Polar Asset Management Partners Inc. | 3.8M | $41.3M | 0.0% | 10.610% | 0.68% |
| 2 | Jain Global LLC | 2.8M | $30.8M | 0.0% | 7.920% | 0.12% |
| 3 | METEORA CAPITAL, LLC | 2.8M | $30.5M | -27.6% | 7.837% | 2.53% |
| 4 | Alberta Investment Management Corp | 2.5M | $26.8M | 0.0% | 6.887% | 0.15% |
| 5 | AQR Arbitrage LLC | 1.8M | $19.5M | — | 5.009% | 0.28% |
| 6 | Saba Capital Management, L.P. | 1.6M | $17.2M | 0.0% | 4.410% | 0.44% |
| 7 | BERKLEY W R CORP | 1.4M | $15.5M | +48.4% | 3.978% | 0.71% |
| 8 | Crossingbridge Advisors, LLC | 1.4M | $15.1M | 0.0% | 3.869% | 2.66% |
| 9 | HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 1.0M | $10.8M | — | 2.783% | 0.02% |
| 10 | LMR Partners LLP | 1.0M | $10.8M | -26.1% | 2.783% | 0.04% |
| 11 | Shay Capital LLC | 1.0M | $10.8M | 0.0% | 2.783% | 0.70% |
| 12 | Ghisallo Capital Management LLC | 921K | $10.0M | — | 2.563% | 0.20% |
| 13 | CITADEL ADVISORS LLC | 754K | $8.2M | +701.3% | 2.097% | 0.00% |
| 14 | BOOTHBAY FUND MANAGEMENT, LLC | 626K | $6.8M | -0.7% | 1.741% | 0.09% |
| 15 | RiverPark Advisors, LLC | 294K | $3.2M | 0.0% | 0.819% | 1.46% |
| 16 | TORONTO DOMINION BANK | 292K | $3.2M | -59.7% | 0.812% | 0.00% |
| 17 | Magnetar Financial LLC | 269K | $2.9M | 0.0% | 0.749% | 0.03% |
| 18 | Shaolin Capital Management LLC | 143K | $1.5M | — | 0.398% | 0.07% |
| 19 | Clear Street Group Inc. | 136K | $1.5M | +32.9% | 0.379% | 0.00% |
| 20 | WHITEBOX ADVISORS LLC | 130K | $1.4M | 0.0% | 0.362% | 0.02% |
| 21 | HGC Investment Management Inc. | 101K | $1.1M | 0.0% | 0.280% | 0.22% |
| 22 | MILLENNIUM MANAGEMENT LLC | 100K | $1.1M | 0.0% | 0.278% | 0.00% |
| 23 | MOORE CAPITAL MANAGEMENT, LP | 100K | $1.1M | 0.0% | 0.278% | 0.02% |
| 24 | Helix Partners Management LP | 300K | $1000K | — | 0.836% | 0.13% |
| 25 | GEODE CAPITAL MANAGEMENT, LLC | 90K | $972K | -0.8% | 0.250% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in MBAV — a direct measure of their conviction.
Filings activity in MBAV during Q2 2026, grouped by how each filer changed its position.
Institutions that opened a new MBAV position in Q2 2026
Institutions that fully closed their MBAV position in Q2 2026
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 36 | 25% | 72.06% | 4.22 pp | $276M | 4.9% |
| Q1 2026 | 48 | 2.0% | 76.28% | 3.65 pp | $290M | 3.5% |
| Q4 2025 | 49 | 20% | 79.93% | +3.63 pp | $301M | +9.2% |
| Q3 2025 | 61 | +0.0% | 76.30% | +9.71 pp | $276M | +8.0% |
| Q2 2025 | 61 | +49% | 66.59% | +8.08 pp | $255M | +32% |
| Q1 2025 | 41 | +2.5% | 58.51% | +1.64 pp | $193M | +5.2% |
| Q4 2024 | 40 | +135% | 56.87% | +32.69 pp | $184M | +119% |
| Q3 2024 | 17 | — | 24.18% | — | $84M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying MBAV stock.
Based on Q2 2026 13F filings, institutional ownership of M3-Brigade Acquisition V Corp. Class A Ordinary shares stands at 72.1%, held across 36 reporting institutions.
Polar Asset Management Partners Inc. is the largest reported institutional holder of MBAV, with approximately 3,812,849 shares worth $0.04B as of Q2 2026.
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of MBAV, including CITADEL ADVISORS LLC, MILLENNIUM MANAGEMENT LLC.
Our composite Smart Money Score for MBAV is 33 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
5 institutions opened new positions in MBAV during Q2 2026, while 16 fully exited. 24 added to existing positions and 6 trimmed.
MBAV institutional ownership fell by 4.22 percentage points quarter-over-quarter, with a net change of -12 holders.
The top 10 institutions account for 79.1% of all reported 13F value in MBAV, and the top 25 account for 98.9%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
M3-Brigade Acquisition V Corp. Class A Ordinary shares (MBAV) Institutional Ownership