COMPASS MINERALS INTERNATION (CMP) Institutional Shareholders
COMPASS MINERALS INTERNATION (CMP) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $1.21B in CMP holdings during the latest filing period.
Koch, Inc. is currently the largest disclosed institutional shareholder of CMP tracked by InsiderSet, reporting ownership valued at approximately $218.99M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $168.13M, representing an estimated loss of -23.23% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 61% of the total disclosed CMP value among the investors covered in this analysis. Major shareholders include Koch, Inc., Sailingstone Capital Partners Llc, Blackrock, Inc., and several other long-term asset managers with concentrated positions in COMPASS MINERALS INTERNATION (CMP).
This page ranks the largest institutional CMP shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
226
Total Reported Value
$1.21B
Largest Holder
Koch, Inc.
Largest Position
$218.99M
Insider Transactions (90d)
9
Latest Filing Quarter
Q2 2026
New Institutional Positions
76
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Koch, Inc. | 20.01% | 7,034,609 | $218,987,378 | $168,127,155 | -$50,860,223 | -23.23% | |
| Sailingstone Capital Partners Llc | 19.53% | 3,351,366 | $104,328,024 | $80,097,647 | -$24,230,377 | -23.23% | |
| Blackrock, Inc. | 0.00% | 3,078,473 | $95,832,876 | $73,575,505 | -$22,257,371 | -23.23% | |
| State Street Corp | 0.00% | 2,441,899 | $76,016,316 | $58,361,386 | -$17,654,930 | -23.23% | |
| American Century Companies Inc | 0.03% | 2,273,578 | $70,776,483 | $54,338,514 | -$16,437,969 | -23.23% | |
| Vanguard Capital Management Llc | 0.00% | 1,775,518 | $55,271,875 | $42,434,880 | -$12,836,995 | -23.23% | |
| Irenic Capital Management Lp | 2.39% | 1,068,378 | $33,258,607 | $25,534,234 | -$7,724,373 | -23.23% | |
| Dimensional Fund Advisors Lp | 0.01% | 951,151 | $29,609,821 | $22,732,509 | -$6,877,312 | -23.23% | |
| Jacobs Levy Equity Management, Inc | 0.10% | 886,009 | $27,581,460 | $21,175,615 | -$6,405,845 | -23.23% | |
| Gumshoe Capital Management Llc | 24.82% | 872,348 | $27,156,193 | $20,849,117 | -$6,307,076 | -23.23% | |
| Geode Capital Management, Llc | 0.00% | 841,419 | $26,198,395 | $20,109,914 | -$6,088,481 | -23.24% | |
| Vanguard Portfolio Management Llc | 0.00% | 698,271 | $21,737,176 | $16,688,677 | -$5,048,499 | -23.23% | |
| Charles Schwab Investment Management Inc | 0.00% | 655,606 | $20,409,015 | $15,668,983 | -$4,740,032 | -23.23% | |
| Aqr Capital Management Llc | 0.01% | 637,339 | $19,840,363 | $15,232,402 | -$4,607,961 | -23.23% | |
| Engine Capital Management, Lp | 1.92% | 633,021 | $19,705,944 | $15,129,202 | -$4,576,742 | -23.23% | |
| Newtyn Management, Llc | 2.46% | 632,326 | $19,684,308 | $15,112,591 | -$4,571,717 | -23.23% | |
| O'Keefe Stevens Advisory, Inc. | 4.03% | 631,272 | $19,651,487 | $15,087,401 | -$4,564,086 | -23.23% | |
| Lee Danner & Bass Inc | 1.04% | 580,750 | $18,078,748 | $13,879,925 | -$4,198,823 | -23.23% | |
| Federated Hermes, Inc. | 0.03% | 574,763 | $17,892,373 | $13,736,836 | -$4,155,537 | -23.23% | |
| Nuveen, Llc | 0.00% | 520,573 | $16,205,418 | $12,441,695 | -$3,763,723 | -23.23% | |
| Ewing Morris & Co. Investment Partners Ltd. | 7.73% | 570,800 | $14,788,956 | $13,642,120 | -$1,146,836 | -7.75% | |
| Arrowstreet Capital, Limited Partnership | 0.01% | 474,512 | $14,771,559 | $11,340,837 | -$3,430,722 | -23.23% | |
| Morgan Stanley | 0.00% | 439,621 | $13,685,418 | $10,506,942 | -$3,178,476 | -23.23% | |
| Ameriprise Financial Inc | 0.00% | 437,294 | $13,612,972 | $10,451,327 | -$3,161,645 | -23.23% | |
| Advisors Asset Management, Inc. | 0.17% | 238,503 | $12,182,733 | $5,700,222 | -$6,482,511 | -53.21% | |
| Hennessy Advisors Inc | 0.34% | 345,500 | $10,755,415 | $8,257,450 | -$2,497,965 | -23.23% | |
| Northern Trust Corp | 0.00% | 307,508 | $9,572,724 | $7,349,441 | -$2,223,283 | -23.23% | |
| Goldman Sachs Group Inc | 0.00% | 306,078 | $9,528,208 | $7,315,264 | -$2,212,944 | -23.23% | |
| Raymond James Financial Inc | 0.00% | 287,553 | $8,951,524 | $6,872,517 | -$2,079,007 | -23.23% | |
| Bnp Paribas Financial Markets | 0.00% | 273,512 | $8,514,429 | $6,536,937 | -$1,977,492 | -23.23% | |
| Bank Of America Corp | 0.00% | 271,489 | $8,451,453 | $6,488,587 | -$1,962,866 | -23.23% | |
| Vanguard Fiduciary Trust Co | 0.00% | 252,156 | $7,849,616 | $6,026,528 | -$1,823,088 | -23.23% | |
| State Of Wisconsin Investment Board | 0.01% | 191,325 | $5,955,947 | $4,572,668 | -$1,383,280 | -23.23% | |
| Invesco Ltd. | 0.00% | 189,199 | $5,889,765 | $4,521,856 | -$1,367,909 | -23.23% | |
| Jpmorgan Chase & Co | 0.00% | 179,130 | $5,599,614 | $4,281,207 | -$1,318,407 | -23.54% | |
| D. E. Shaw & Co., Inc. | 0.00% | 177,420 | $5,523,084 | $4,240,338 | -$1,282,746 | -23.23% | |
| Millennium Management Llc | 0.00% | 164,323 | $5,115,375 | $3,927,320 | -$1,188,055 | -23.23% | |
| Fmr Llc | 0.00% | 153,129 | $4,766,915 | $3,659,783 | -$1,107,132 | -23.23% | |
| Castleknight Management Lp | 0.16% | 142,126 | $4,424,382 | $3,396,811 | -$1,027,571 | -23.23% | |
| Janney Montgomery Scott Llc | 0.01% | 138,555 | $4,313,000 | $3,311,465 | -$1,001,536 | -23.22% | |
| Trexquant Investment Lp | 0.03% | 134,188 | $4,177,272 | $3,207,093 | -$970,179 | -23.23% | |
| Thompson Siegel & Walmsley Llc | 0.07% | 123,958 | $3,859,000 | $2,962,596 | -$896,404 | -23.23% | |
| Bank Of New York Mellon Corp | 0.00% | 105,468 | $3,283,232 | $2,520,685 | -$762,547 | -23.23% | |
| Lighthouse Investment Partners, Llc | 0.09% | 97,768 | $3,043,518 | $2,336,655 | -$706,863 | -23.23% | |
| Sg Americas Securities, Llc | 0.00% | 87,671 | $2,729,000 | $2,095,337 | -$633,663 | -23.22% | |
| Natixis | 0.01% | 86,447 | $2,691,095 | $2,066,083 | -$625,012 | -23.23% | |
| Xtx Topco Ltd | 0.03% | 81,169 | $2,526,791 | $1,939,939 | -$586,852 | -23.23% | |
| Martingale Asset Management L P | 0.06% | 80,661 | $2,510,977 | $1,927,798 | -$583,179 | -23.23% | |
| Citigroup Inc | 0.00% | 75,668 | $2,355,544 | $1,808,465 | -$547,079 | -23.23% | |
| Ubs Group Ag | 0.00% | 70,517 | $2,195,194 | $1,685,356 | -$509,838 | -23.23% |
Frequently asked questions about CMP
Who owns the most CMP stock?
The largest holders of CMP are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for COMPASS MINERALS INTERNATION (CMP).
Is CMP widely held by superinvestors?
Many widely followed stocks like CMP appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly CMP is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.