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

COMPASS MINERALS INTL INC

219 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)·219 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 8.3%
vs prior quarter
13F value held
$781M
72.0% inst. owned
of float
Holders
219
+115 QoQ
filers reporting
Activity
+8 / −20
+899 added · −739 reduced
this quarter
Concentration
21.03%
Koch, Inc. #1
top holder share
AI Holders Summary · Q1 2026

219 institutions reported CMP in Q1 2026. Koch, Inc. leads at 21.0% of the visible book. +115 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
Koch, Inc.
CIK 0002027344
$164M7.0M17.82%Q1 202602
SailingStone Capital Partners LLC
CIK 0001608904
$113M4.8M25.59%Q1 202603
BlackRock, Inc.
CIK 0002012383
$67M2.9M0.00%Q1 202604
STATE STREET CORP
CIK 0000093751
$54M2.3M0.00%Q1 202605
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$41M1.7M0.00%Q1 202606
Ewing Morris & Co. Investment Partners Ltd.
CIK 0001846838
$40M2.0M18.21%Q1 202607
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$39M1.7M0.02%Q1 202608
Engine Capital Management, LP
CIK 0001665590
$34M1.4M4.06%Q1 202609
Irenic Capital Management LP
CIK 0001929389
$34M1.4M2.18%Q1 202610
Gumshoe Capital Management LLC
CIK 0001995382
$30M1.3M23.99%Q1 202611
BANK OF AMERICA CORP /DE/
CIK 0000070858
$29M1.3M0.00%Q1 202612
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$21M914K0.00%Q1 202613
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$18M785K0.00%Q1 202614
Newtyn Management, LLC
CIK 0001569241
$18M770K1.92%Q1 202615
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$16M704K0.00%Q1 202616
O'Keefe Stevens Advisory, Inc.
CIK 0001780565
$14M610K3.52%Q1 202617
LEE DANNER & BASS INC
CIK 0000939219
$14M606K0.89%Q1 202618
Vanguard Portfolio Management
CIK 0002100121
$13M571K0.00%Q1 202619
FEDERATED HERMES, INC.
CIK 0001056288
$13M539K0.02%Q1 202620
AMERIPRISE FINANCIAL INC
CIK 0000820027
$8M360K0.00%Q1 2026
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