COMPASS MINERALS INTERNATION (CMP) Institutional Selling Activity
Several institutional investors tracked by InsiderSet reduced exposure to COMPASS MINERALS INTERNATION (CMP) during the quarter ended March 31, 2026 based on sequential SEC Form 13F filings.
The largest disclosed institutional seller of CMP during the latest reporting period reduced its reported position by approximately $4.02M based on quarter-end filing values.
Institutional selling activity may reflect profit-taking, sector rotation, portfolio rebalancing, or changing conviction levels among major investment firms. InsiderSet tracks quarter-over-quarter holding reductions, full exits, estimated value changes, and historical selling activity using publicly disclosed SEC filing data.
The investors covered on this page collectively reduced approximately $8.17M in reported CMP exposure during the latest filing period, although many institutional holders continue to maintain significant long-term ownership positions in COMPASS MINERALS INTERNATION.
| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q4 2025 | Renaissance Technologies LLC | Sell | -100 | 15,800 | $310,312 |
| Q3 2025 | Renaissance Technologies LLC | Sell | -209,300 | 15,900 | $305,280 |
| Q4 2024 | Renaissance Technologies LLC | Sell | -322,800 | 225,200 | $2,533,500 |
| Q3 2023 | Renaissance Technologies LLC | Sell | -7,199 | 45,001 | $1,258 |
| Q2 2023 | Renaissance Technologies LLC | Sell | -41,400 | 52,200 | $1,775 |
| Q4 2022 | Hillman Value Fund | Sell | -5,948 | 164,812 | $6,757,292 |
| Q4 2021 | Hillman Value Fund | Sell | -7,441 | 139,757 | $7,138 |
| Q4 2020 | Hillman Value Fund | Sell | -127 | 95,203 | $5,876 |
| Q3 2020 | Hillman Value Fund | Sell | -354 | 95,330 | $5,658 |
| Q2 2019 | Renaissance Technologies LLC | Sell | -1,100 | 4,200 | $231 |
| Q3 2018 | Renaissance Technologies LLC | Sell | -146,000 | 5,300 | $356 |
| Q4 2017 | Parnassus Endeavor Fund | Sell | -1,634,303 | 185,653 | $13,413 |
| Q3 2017 | Parnassus Endeavor Fund | Sell | -1,327,145 | 1,819,956 | $118,115 |
| Q4 2016 | Renaissance Technologies LLC | Sell | -154,400 | 18,500 | $1,449 |
| Q4 2015 | Jensen Investment Management | Sell | -950 | 4,790 | $361 |
| Q1 2015 | Renaissance Technologies LLC | Sell | -48,500 | 89,600 | $8,352 |
| Q4 2014 | Renaissance Technologies LLC | Sell | -102,800 | 138,100 | $11,991 |
| Q4 2014 | Parnassus Endeavor Fund | Sell | -61,135 | 2,305,946 | $200,225 |
| Q3 2014 | Parnassus Endeavor Fund | Sell | -30,953 | 2,367,081 | $199,498 |
| Q3 2014 | Renaissance Technologies LLC | Sell | -14,500 | 240,900 | $20,303 |
| Q2 2014 | Parnassus Endeavor Fund | Sell | -219,574 | 2,398,034 | $229,588 |
| Q1 2014 | Third Avenue Management | Sell | -84,981 | 464,147 | $38,301 |
Frequently asked questions about CMP activity
Which institutional owners are buying CMP?
Institutional owners buying CMP include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in CMP activity?
"Buy" means an investor increased their reported position in CMP compared to the prior reporting period. This reflects growing exposure to COMPASS MINERALS INTERNATION (CMP) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in CMP increasing?
Institutional interest in CMP can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.