DOSSIER · 13F Holders · Q1 2026Basic Materials · Mining & Quarrying of Nonmetallic Minerals (No Fuels)
CMP

COMPASS MINERALS INTL INC

220 institutions still hold COMPASS MINERALS INTL INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 20451N101·Mining & Quarrying of Nonmetallic Minerals (No Fuels)·220 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$793M
visible holders
Holders
220
filers reporting
Concentration
20.72%
Koch, Inc. #1
top holder share
AI Holders Summary · Q1 2026

220 institutions reported CMP in Q1 2026. Koch, Inc. leads at 20.7% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Koch, Inc.
CIK 0002027344
$164M7.0M17.82%Q1 2026
02
SailingStone Capital Partners LLC
CIK 0001608904
$113M4.8M25.59%Q1 2026
03
BlackRock, Inc.
CIK 0002012383
$67M2.9M0.00%Q1 2026
04
STATE STREET CORP
CIK 0000093751
$54M2.3M0.00%Q1 2026
05
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$41M1.7M0.00%Q1 2026
06
Ewing Morris & Co. Investment Partners Ltd.
CIK 0001846838
$40M2.0M18.21%Q1 2026
07
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$39M1.7M0.02%Q1 2026
08
Engine Capital Management, LP
CIK 0001665590
$34M1.4M4.06%Q1 2026
09
Irenic Capital Management LP
CIK 0001929389
$34M1.4M2.18%Q1 2026
10
Gumshoe Capital Management LLC
CIK 0001995382
$30M1.3M23.99%Q1 2026
11
BANK OF AMERICA CORP /DE/
CIK 0000070858
$29M1.3M0.00%Q1 2026
12
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$21M914K0.00%Q1 2026
13
O'Keefe Stevens Advisory, Inc.
CIK 0001780565
$20M631K4.03%Q2 2026
14
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$18M785K0.00%Q1 2026
15
LEE DANNER & BASS INC
CIK 0000939219
$18M581K1.04%Q2 2026
16
Newtyn Management, LLC
CIK 0001569241
$18M770K1.92%Q1 2026
17
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$16M704K0.00%Q1 2026
18
Vanguard Portfolio Management
CIK 0002100121· Index
$13M571K0.00%Q1 2026
19
FEDERATED HERMES, INC.
CIK 0001056288
$13M539K0.02%Q1 2026
20
HENNESSY ADVISORS INC
CIK 0001145255
$11M346K0.34%Q2 2026
Page 1 of 11
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Insiders at COMPASS MINERALS INTL INC
Safran DavidDealy Richard PReece Joseph ENichols Benjamin S.Ball Russell DavidWalker Lori AFjellman PeterDowling Edward C