Who owns HCM III ACQUISITION CORP.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of HCMAU from SEC Form 13F filings across 11 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, 11 institutions disclosed 750,718 shares of HCM III ACQUISITION CORP. worth $7.8M — about 2.2% of shares outstanding; the largest disclosed holder is TORONTO DOMINION BANK. Source: SEC Form 13F filings, parsed by EvidInvest.
11
13F holders
$7.8M
value, 2026 filers
2.2%
of shares outstanding (750,718 sh)
1
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 HCMAU's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | TORONTO DOMINION BANK | 501,862 | $5.2M | 0.0% | 1.5% | +16.6% |
| 2 | HRT FINANCIAL LP | 52,406 | $547,000 | 0.0% | 0.2% | -4.9% |
| 3 | OMERS ADMINISTRATION Corp | 50,000 | $522,000 | 0.0% | 0.1% | 0.0% |
| 4 | SONA ASSET MANAGEMENT (US) LLC | 50,000 | $522,000 | 0.0% | 0.1% | 0.0% |
| 5 | Walleye Capital LLC | 50,000 | $522,000 | 0.0% | 0.1% | 0.0% |
| 6 | Westchester Capital Management, LLC | 25,000 | $261,000 | 0.0% | 0.1% | 0.0% |
| 7 | Clear Street Group Inc.NEW | 11,092 | $115,800 | 0.0% | 0% | new |
| 8 | READYSTATE ASSET MANAGEMENT LP | 10,000 | $104,400 | 0.0% | 0% | 0.0% |
| 9 | FNY Investment Advisers, LLC | 200 | $2,000 | 0.0% | 0% | 0.0% |
| 10 | UBS Group AG | 157 | $1,639 | 0.0% | 0% | -32.6% |
| 11 | HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 1 | $10 | 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.