Who owns HCM Acquisition (HCMA)
Which tracked institutional funds hold HCMA, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See HCMA company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-08-17). 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
6 tracked funds added or opened HCMA while 13 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
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
HCMA’s largest tracked holder by dollar value, METEORA CAPITAL, LLC, sizes it at 0.2% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.1pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in HCMA 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 49 tracked filers holding HCMA, 9 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 HCMA 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.
New buyers 3
- Polar Asset Management Partners Inc.$5M
- O'Connor Alternative Investments LLC$1M
- Jain Global LLC$1M
Full exits 7
- METEORA CAPITAL, LLC$21M
- TENOR CAPITAL MANAGEMENT Co., L.P.$10M
- Mint Tower Capital Management B.V.$8M
- GLAZER CAPITAL, LLC$4M
- TORONTO DOMINION BANK$2M
- Virtu Financial LLC$1M
Largest adds
- MILLENNIUM MANAGEMENT LLC$1M
- Verition Fund Management LLC$991K
- K2 PRINCIPAL FUND, L.P.$594K
Largest trims
- JPMORGAN CHASE & CO$10M
- HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND$3M
- Saba Capital Management, L.P.$2M
- Shaolin Capital Management LLC$1M
- Clear Street Group Inc.$680K
- WOLVERINE ASSET MANAGEMENT LLC$539K
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 |
|---|---|---|---|---|
| Linden Advisors LP | 1,200,000 | $12M | 5.1% | 2026-Q2 |
| LMR Partners LLP | 1,050,000 | $11M | 4.4% | 2026-Q2 |
| Verition Fund Management LLC added | 1,021,661 | $11M | 4.3% | 2026-Q2 |
| Governors Lane LP | 1,009,055 | $10M | 4.3% | 2026-Q2 |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | 1,000,000 | $10M | 4.2% | 2026-Q2 |
| MMCAP International Inc. SPC | 1,000,000 | $10M | 4.2% | 2026-Q2 |
| Magnetar Financial LLC | 999,990 | $10M | 4.2% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP | 797,500 | $8M | 3.4% | 2026-Q2 |
| Saba Capital Management, L.P. trimmed | 749,650 | $8M | 3.2% | 2026-Q2 |
| Radcliffe Capital Management, L.P. | 703,404 | $7M | 3.0% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND trimmed | 699,999 | $7M | 3.0% | 2026-Q2 |
| HGC Investment Management Inc. | 600,000 | $6M | 2.5% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 561,350 | $6M | 2.4% | 2026-Q2 |
| Alberta Investment Management Corp | 550,000 | $6M | 2.3% | 2026-Q2 |
| Polar Asset Management Partners Inc. new | 500,000 | $5M | 2.1% | 2026-Q2 |
| Context Capital Management, LLC | 500,000 | $5M | 2.1% | 2026-Q2 |
| PEAK6 LLC | 499,999 | $5M | 2.1% | 2026-Q2 |
| PICTON MAHONEY ASSET MANAGEMENT | 499,995 | $5M | 2.1% | 2026-Q2 |
| Periscope Capital Inc. | 450,000 | $5M | 1.9% | 2026-Q2 |
| BERKLEY W R CORP | 388,407 | $4M | 1.6% | 2026-Q2 |
| AQR Arbitrage LLC | 379,387 | $4M | 1.6% | 2026-Q2 |
| BlueCrest Capital Management Ltd | 350,000 | $4M | 1.5% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC trimmed | 297,375 | $3M | 1.3% | 2026-Q2 |
| MIZUHO SECURITIES USA LLC | 300,000 | $3M | 1.2% | 2026-Q2 |
| K2 PRINCIPAL FUND, L.P. added | 253,936 | $3M | 1.1% | 2026-Q2 |
| DLD Asset Management, LP | 250,000 | $3M | 1.1% | 2026-Q2 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 199,998 | $2M | 0.8% | 2026-Q2 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | 199,996 | $2M | 0.8% | 2026-Q2 |
| Clear Street Group Inc. trimmed | 175,000 | $2M | 0.7% | 2026-Q2 |
| Shaolin Capital Management LLC trimmed | 138,473 | $1M | 0.6% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS | 120,600 | $1M | 0.5% | 2026-Q2 |
| HBK INVESTMENTS L P | 100,002 | $1M | 0.4% | 2026-Q2 |
| O'Connor Alternative Investments LLC new | 100,000 | $1M | 0.4% | 2026-Q2 |
| WHITEBOX ADVISORS LLC | 100,000 | $1M | 0.4% | 2026-Q2 |
| MOORE CAPITAL MANAGEMENT, LP | 100,000 | $1M | 0.4% | 2026-Q2 |
| Galaxy Digital Inc. | 100,000 | $1M | 0.4% | 2026-Q2 |
| Jain Global LLC new | 98,791 | $1M | 0.4% | 2026-Q2 |
| WOLVERINE ASSET MANAGEMENT LLC trimmed | 76,505 | $786K | 0.3% | 2026-Q2 |
| READYSTATE ASSET MANAGEMENT LP | 53,603 | $551K | 0.2% | 2026-Q2 |
| GRITSTONE ASSET MANAGEMENT LLC | 50,000 | $514K | 0.2% | 2026-Q2 |
| Hudson Bay Capital Management LP | 50,000 | $514K | 0.2% | 2026-Q2 |
| ARISTEIA CAPITAL, L.L.C. added | 45,047 | $463K | 0.2% | 2026-Q2 |
| Davidson Kempner Capital Management LP | 25,000 | $257K | 0.1% | 2026-Q2 |
| Ghisallo Capital Management LLC | 25,000 | $257K | 0.1% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 24,813 | $255K | 0.1% | 2026-Q2 |
| ABC ARBITRAGE SA | 20,000 | $206K | 0.1% | 2026-Q2 |
| PenderFund Capital Management Ltd. added | 19,600 | $201K | 0.1% | 2026-Q2 |
| Rangeley Capital, LLC added | 14,046 | $144K | 0.1% | 2026-Q2 |
| MORGAN STANLEY trimmed | 45 | $463 | 0.0% | 2026-Q2 |
| METEORA CAPITAL, LLC added | 2,077,075 | $21M | 8.6% | 2026-Q1 stale (1 quarter behind) |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 1,000,000 | $10M | 4.1% | 2026-Q1 stale (1 quarter behind) |
| Mint Tower Capital Management B.V. | 750,000 | $8M | 3.1% | 2026-Q1 stale (1 quarter behind) |
| GLAZER CAPITAL, LLC added | 410,406 | $4M | 1.7% | 2026-Q1 stale (1 quarter behind) |
| TORONTO DOMINION BANK trimmed | 215,000 | $2M | 0.9% | 2026-Q1 stale (1 quarter behind) |
| Virtu Financial LLC trimmed | 104,115 | $1M | 0.4% | 2026-Q1 stale (1 quarter behind) |
| UBS Group AG added | 71,590 | $722K | 0.3% | 2026-Q1 stale (1 quarter behind) |
| FNY Investment Advisers, LLC added | 8,000 | $80K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Harraden Circle Investments, LLC trimmed | 423,280 | $4M | 1.7% | 2025-Q4 stale (2 quarters behind) |
| Driehaus Capital Management LLC new | 50,000 | $503K | 0.2% | 2025-Q4 stale (2 quarters behind) |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP new | 27,210 | $274K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| Fort Baker Capital Management LP | 10,000 | $100K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| ROYAL BANK OF CANADA | 3,500 | $35K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| HighTower Advisors, LLC new | 132,517 | $1M | 0.6% | 2025-Q3 stale (3 quarters behind) |
| StoneX Group Inc. new | 50,000 | $505K | 0.2% | 2025-Q3 stale (3 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.