DOSSIER · 13F Holders · Q2 2026Basic Materials · Mining & Quarrying of Nonmetallic Minerals (No Fuels)
CMP

COMPASS MINERALS INTL INC

249 institutions still hold COMPASS MINERALS INTL INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 20451N101·Mining & Quarrying of Nonmetallic Minerals (No Fuels)·249 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$942M
visible holders
Holders
249
filers reporting
Concentration
23.25%
Koch, Inc. #1
top holder share
AI Holders Summary · Q2 2026

249 institutions reported CMP in Q2 2026. Koch, Inc. leads at 23.3% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
Koch, Inc.
CIK 0002027344
$219M7.0M20.01%Q2 2026
02
SailingStone Capital Partners LLC
CIK 0001608904
$104M3.4M19.53%Q2 2026
03
BlackRock, Inc.
CIK 0002012383
$96M3.1M0.00%Q2 2026
04
STATE STREET CORP
CIK 0000093751
$76M2.4M0.00%Q2 2026
05
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$71M2.3M0.03%Q2 2026
06
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$55M1.8M0.00%Q2 2026
07
Engine Capital Management, LP
CIK 0001665590
$34M1.4M4.06%Q1 2026
08
Irenic Capital Management LP
CIK 0001929389
$33M1.1M1.60%Q2 2026
09
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$30M951K0.01%Q2 2026
10
Gumshoe Capital Management LLC
CIK 0001995382
$30M1.3M23.99%Q1 2026
11
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$26M841K0.00%Q2 2026
12
Vanguard Portfolio Management
CIK 0002100121· Index
$22M698K0.00%Q2 2026
13
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$20M656K0.00%Q2 2026
14
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$20M637K0.01%Q2 2026
15
Newtyn Management, LLC
CIK 0001569241
$20M632K2.46%Q2 2026
16
O'Keefe Stevens Advisory, Inc.
CIK 0001780565
$20M631K4.03%Q2 2026
17
LEE DANNER & BASS INC
CIK 0000939219
$18M581K1.04%Q2 2026
18
FEDERATED HERMES, INC.
CIK 0001056288
$18M575K0.03%Q2 2026
19
Nuveen, LLC
CIK 0001871926
$16M521K0.00%Q2 2026
20
Ewing Morris & Co. Investment Partners Ltd.
CIK 0001846838
$15M571K7.73%Q2 2026
Page 1 of 13
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Insiders at COMPASS MINERALS INTL INC
Ward AshleySafran DavidDealy Richard PReece Joseph ENichols Benjamin S.Ball Russell DavidWalker Lori AFjellman Peter