Who owns COMPASS MINERALS INTERNATIONAL INC?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of CMP from SEC Form 13F filings across 234 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, 234 institutions disclosed 38.9M shares of COMPASS MINERALS INTERNATIONAL INC worth $1.21B — about 92% of shares outstanding; the largest disclosed holder is Koch, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
234
13F holders
$1.21B
value, 2026 filers
92%
of shares outstanding (38.9M sh)
61
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 CMP's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Koch, Inc. | 7.0M | $219.0M | 20.0% | 16.7% | 0.0% |
| 2 | SailingStone Capital Partners LLC | 3.4M | $104.3M | 19.5% | 7.9% | -30.6% |
| 3 | BlackRock, Inc. | 3.1M | $95.8M | 0.0% | 7.3% | +7.9% |
| 4 | STATE STREET CORP | 2.4M | $76.0M | 0.0% | 5.8% | +5.1% |
| 5 | AMERICAN CENTURY COMPANIES INC | 2.3M | $70.8M | 0.0% | 5.4% | +35.4% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 1.8M | $55.3M | 0.0% | 4.2% | +1.5% |
| 7 | Irenic Capital Management LP | 1.1M | $33.3M | 1.6% | 2.5% | -25.6% |
| 8 | DIMENSIONAL FUND ADVISORS LP | 951,151 | $29.6M | 0.0% | 2.3% | +4.1% |
| 9 | JACOBS LEVY EQUITY MANAGEMENT, INCNEW | 886,009 | $27.6M | 0.1% | 2.1% | new |
| 10 | Gumshoe Capital Management LLC | 872,348 | $27.2M | 24.8% | 2.1% | -31.0% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 841,419 | $26.2M | 0.0% | 2% | +7.2% |
| 12 | VANGUARD PORTFOLIO MANAGEMENT LLC | 698,271 | $21.7M | 0.0% | 1.7% | +22.2% |
| 13 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 655,606 | $20.4M | 0.0% | 1.6% | -6.9% |
| 14 | AQR CAPITAL MANAGEMENT LLC | 637,339 | $19.8M | 0.0% | 1.5% | +822.1% |
| 15 | Engine Capital Management, LP | 633,021 | $19.7M | 1.9% | 1.5% | -56.0% |
| 16 | Newtyn Management, LLC | 632,326 | $19.7M | 2.5% | 1.5% | -17.9% |
| 17 | O'Keefe Stevens Advisory, Inc. | 631,272 | $19.7M | 4.0% | 1.5% | +3.4% |
| 18 | LEE DANNER & BASS INC | 580,750 | $18.1M | 1.0% | 1.4% | -4.1% |
| 19 | FEDERATED HERMES, INC. | 574,763 | $17.9M | 0.0% | 1.4% | +6.7% |
| 20 | Ewing Morris & Co. Investment Partners Ltd. | 570,800 | $14.8M | 7.7% | 1.4% | -71.7% |
| 21 | Nuveen, LLC | 520,573 | $16.2M | 0.0% | 1.2% | +79.7% |
| 22 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 474,512 | $14.8M | 0.0% | 1.1% | +621.9% |
| 23 | MORGAN STANLEY | 439,621 | $13.7M | 0.0% | 1% | +25.7% |
| 24 | AMERIPRISE FINANCIAL INC | 437,294 | $13.6M | 0.0% | 1% | +21.3% |
| 25 | HENNESSY ADVISORS INCNEW | 345,500 | $10.8M | 0.3% | 0.8% | 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.