Who owns Yorkville Acquisition (MCGA)
Which tracked institutional funds hold MCGA, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MCGA company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-08-14). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on MCGA is one-sided between 2026-Q1 and 2026-Q2: 3 added or opened and 12 trimmed or exited — on balance reducing.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
MCGA’s largest tracked holder by dollar value, Harraden Circle Investments, LLC, sizes it at 1.4% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 1.3pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in MCGA divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 53 tracked filers holding MCGA, 10 increased or opened the position and 16 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in MCGA between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
Full exits 8
- Harraden Circle Investments, LLC$175M
- METEORA CAPITAL, LLC$111M
- Decagon Asset Management LLP$60M
- TENOR CAPITAL MANAGEMENT Co., L.P.$25M
- BCK CAPITAL MANAGEMENT LP$4M
- GLAZER CAPITAL, LLC$3M
Largest adds
- JANE STREET GROUP, LLC$2M
- Polar Asset Management Partners Inc.$279K
- CITADEL ADVISORS LLC$252K
Largest trims
- Context Capital Management, LLC$9M
- TORONTO DOMINION BANK$1M
- Shaolin Capital Management LLC$604K
- WOLVERINE ASSET MANAGEMENT LLC$289K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BERKLEY W R CORP | 1,645,570 | $17M | 3.1% | 2026-Q2 |
| MIZUHO SECURITIES USA LLC | 1,292,253 | $13M | 2.4% | 2026-Q2 |
| Murchinson Ltd. | 1,000,400 | $10M | 1.9% | 2026-Q2 |
| Davidson Kempner Capital Management LP | 850,000 | $9M | 1.6% | 2026-Q2 |
| Crossingbridge Advisors, LLC | 850,000 | $9M | 1.6% | 2026-Q2 |
| D. E. Shaw & Co., Inc. | 750,000 | $8M | 1.4% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC | 637,610 | $7M | 1.2% | 2026-Q2 |
| DLD Asset Management, LP trimmed | 613,910 | $6M | 1.1% | 2026-Q2 |
| Westchester Capital Management, LLC | 550,000 | $6M | 1.0% | 2026-Q2 |
| Anson Funds Management LP | 457,767 | $5M | 0.9% | 2026-Q2 |
| RLH Capital LLC | 442,231 | $5M | 0.8% | 2026-Q2 |
| Shaolin Capital Management LLC trimmed | 338,625 | $3M | 0.6% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC | 316,500 | $3M | 0.6% | 2026-Q2 |
| First Trust Capital Management L.P. | 312,330 | $3M | 0.6% | 2026-Q2 |
| AQR Arbitrage LLC added | 295,494 | $3M | 0.6% | 2026-Q2 |
| Radcliffe Capital Management, L.P. | 294,690 | $3M | 0.6% | 2026-Q2 |
| Clear Street Group Inc. added | 269,756 | $3M | 0.5% | 2026-Q2 |
| Polar Asset Management Partners Inc. added | 264,692 | $3M | 0.5% | 2026-Q2 |
| Quarry LP | 252,105 | $3M | 0.5% | 2026-Q2 |
| LMR Partners LLP | 207,208 | $2M | 0.4% | 2026-Q2 |
| Linden Advisors LP | 200,000 | $2M | 0.4% | 2026-Q2 |
| TORONTO DOMINION BANK trimmed | 197,121 | $2M | 0.4% | 2026-Q2 |
| Magnetar Financial LLC | 195,000 | $2M | 0.4% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 177,408 | $2M | 0.3% | 2026-Q2 |
| Hudson Bay Capital Management LP | 150,000 | $2M | 0.3% | 2026-Q2 |
| Massar Capital Management, LP | 130,000 | $1M | 0.2% | 2026-Q2 |
| Periscope Capital Inc. | 125,000 | $1M | 0.2% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 112,455 | $1M | 0.2% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS | 108,459 | $1M | 0.2% | 2026-Q2 |
| Lineage Point Capital LP | 100,100 | $1M | 0.2% | 2026-Q2 |
| WHITEBOX ADVISORS LLC | 100,000 | $1M | 0.2% | 2026-Q2 |
| MOORE CAPITAL MANAGEMENT, LP | 100,000 | $1M | 0.2% | 2026-Q2 |
| Context Capital Management, LLC added | 100,000 | $1M | 0.2% | 2026-Q2 |
| PICTON MAHONEY ASSET MANAGEMENT | 84,996 | $868K | 0.2% | 2026-Q2 |
| CSS LLC/IL | 82,253 | $840K | 0.2% | 2026-Q2 |
| Jain Global LLC | 75,000 | $766K | 0.1% | 2026-Q2 |
| Brevan Howard Capital Management LP | 60,000 | $613K | 0.1% | 2026-Q2 |
| JPMORGAN CHASE & CO | 40,000 | $412K | 0.1% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 39,373 | $402K | 0.1% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC added | 29,898 | $305K | 0.1% | 2026-Q2 |
| MORGAN STANLEY | 20,000 | $206K | 0.0% | 2026-Q2 |
| K2 PRINCIPAL FUND, L.P. | 18,075 | $185K | 0.0% | 2026-Q2 |
| ROBINSON CAPITAL MANAGEMENT, LLC | 15,200 | $155K | 0.0% | 2026-Q2 |
| WOLVERINE ASSET MANAGEMENT LLC trimmed | 6,460 | $66K | 0.0% | 2026-Q2 |
| HGC Investment Management Inc. | 3,852 | $39K | 0.0% | 2026-Q2 |
| ARISTEIA CAPITAL, L.L.C. | 126,296 | $37K | 0.0% | 2026-Q2 |
| Rangeley Capital, LLC trimmed | 2,016 | $21K | 0.0% | 2026-Q2 |
| GROUP ONE TRADING LLC new | 1,500 | $15K | 0.0% | 2026-Q2 |
| Parallax Volatility Advisers, L.P. | 49,564 | $13K | 0.0% | 2026-Q2 |
| READYSTATE ASSET MANAGEMENT LP | 24,586 | $6K | 0.0% | 2026-Q2 |
| T3 Companies, LLC | 13,009 | $3K | 0.0% | 2026-Q2 |
| UBS Group AG trimmed | 314 | $3K | 0.0% | 2026-Q2 |
| SIMPLEX TRADING, LLC new | 92 | $939 | 0.0% | 2026-Q2 |
| Harraden Circle Investments, LLC trimmed | 510,699 | $175M | 32.1% | 2026-Q1 stale (1 quarter behind) |
| METEORA CAPITAL, LLC trimmed | 300,000 | $103M | 18.9% | 2026-Q1 stale (1 quarter behind) |
| Decagon Asset Management LLP added | 175,268 | $60M | 11.0% | 2026-Q1 stale (1 quarter behind) |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 66,666 | $23M | 4.2% | 2026-Q1 stale (1 quarter behind) |
| BCK CAPITAL MANAGEMENT LP | 379,000 | $4M | 0.7% | 2026-Q1 stale (1 quarter behind) |
| GLAZER CAPITAL, LLC added | 250,322 | $3M | 0.5% | 2026-Q1 stale (1 quarter behind) |
| HRT FINANCIAL LP trimmed | 142,363 | $1M | 0.3% | 2026-Q1 stale (1 quarter behind) |
| Mint Tower Capital Management B.V. | 100,000 | $1M | 0.2% | 2026-Q1 stale (1 quarter behind) |
| Virtu Financial LLC added | 40,003 | $404K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| GEODE CAPITAL MANAGEMENT, LLC | 12,458 | $126K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Mosley Wealth Management new | 137 | $1K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| FNY Investment Advisers, LLC | 27,000 | $273K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| Yakira Capital Management, Inc. | 10,000 | $103K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| TWO SIGMA INVESTMENTS, LP | 407,812 | $4M | 0.8% | 2025-Q3 stale (3 quarters behind) |
| BlueCrest Capital Management Ltd new | 176,991 | $2M | 0.4% | 2025-Q3 stale (3 quarters behind) |
| Verition Fund Management LLC trimmed | 120,716 | $1M | 0.2% | 2025-Q3 stale (3 quarters behind) |
| BALYASNY ASSET MANAGEMENT L.P. new | 101,000 | $1M | 0.2% | 2025-Q3 stale (3 quarters behind) |
| FIFTH LANE CAPITAL, LP new | 76,227 | $813K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| RK Capital Management, LLC/FL new | 72,908 | $777K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| CANTOR FITZGERALD, L. P. new | 55,278 | $589K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| MASO CAPITAL PARTNERS Ltd new | 50,000 | $533K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| Pekin Hardy Strauss, Inc. new | 26,500 | $282K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| ExodusPoint Capital Management, LP new | 20,411 | $218K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| ATW SPAC MANAGEMENT LLC trimmed | 18,700 | $199K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Azora Capital LP added | 12,493 | $133K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Squarepoint Ops LLC new | 11,967 | $128K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Fort Baker Capital Management LP trimmed | 50,000 | $60K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Dauntless Investment Group, LLC trimmed | 2,991 | $33K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| J. Goldman & Co LP new | 800,000 | $9M | 1.6% | 2025-Q2 stale (4 quarters behind) |
| CLEAR STREET LLC new | 480,000 | $5M | 1.0% | 2025-Q2 stale (4 quarters behind) |
| WEXFORD CAPITAL LP new | 100,000 | $1M | 0.2% | 2025-Q2 stale (4 quarters behind) |
| Saba Capital Management, L.P. new | 100,000 | $1M | 0.2% | 2025-Q2 stale (4 quarters behind) |
| SCOGGIN MANAGEMENT LP new | 75,000 | $844K | 0.2% | 2025-Q2 stale (4 quarters behind) |
| Praetorian PR LLC new | 70,139 | $789K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| GRITSTONE ASSET MANAGEMENT LLC new | 50,000 | $562K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC new | 45,275 | $509K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| Tuttle Capital Management, LLC new | 30,000 | $338K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| Alpine Global Management, LLC new | 25,000 | $281K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| Bulldog Investors, LLP new | 20,000 | $225K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| BLUEFIN CAPITAL MANAGEMENT, LLC new | 20,000 | $225K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| Patriot Financial Group Insurance Agency, LLC new | 18,500 | $208K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| PRELUDE CAPITAL MANAGEMENT, LLC new | 11,036 | $124K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. new | 0 | — | 0.0% | 2025-Q2 stale (4 quarters behind) |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.