Who owns Onex Corporation?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of ONEXF from SEC Form 13F filings across 2 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, 2 institutions disclosed 487,939 shares of Onex Corporation worth $36.3M — about 0.9% of shares outstanding; the largest disclosed holder is Williams Jones Wealth Management, LLC.. Source: SEC Form 13F filings, parsed by EvidInvest.
2
13F holders
$36.3M
value, 2026 filers
0.9%
of shares outstanding (487,939 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 ONEXF's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Williams Jones Wealth Management, LLC. | 485,004 | $36.1M | 0.4% | 0.9% | -1.7% |
| 2 | BECK MACK & OLIVER LLCNEW | 2,935 | $218,569 | 0.0% | 0% | new |
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.