Company · Ownership research

COMPASS MINERALS INTERNATIONAL INC CMP

CIK 0001227654 · CUSIP 20451N101

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 20451N101 (CMP), not CUSIP 20451N901 (CMP), CUSIP 20451N951 (CMP), and does not merge CUSIPs.

This page lists the top 20 of 213 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	Koch, Inc. CIK 2027344 · View history	$141.33M 7,034,609 shares	20.44%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2025	▾
02	SailingStone Capital Partners LLC CIK 1608904 · View history	$111.78M 5,564,167 shares	29.54%	-640.67K(-10.30%)Reduced	SEC filing ↗ Aug 14, 2025	▾
03	BlackRock, Inc. CIK 2012383 · View history	$84.68M 4,215,135 shares	0.00%	-818.19K(-16.30%)Reduced	SEC filing ↗ Aug 12, 2025	▾
04	VANGUARD GROUP INC CIK 102909 · View history	$48.62M 2,420,156 shares	0.00%	+159.04K(+7.00%)Added	SEC filing ↗ Aug 11, 2025	▾
05	STATE STREET CORP CIK 93751 · View history	$41.05M 2,043,251 shares	0.00%	+347.58K(+20.50%)Added	SEC filing ↗ Aug 14, 2025	▾
06	Newtyn Management, LLC CIK 1569241 · View history	$25.66M 1,277,183 shares	3.89%	+1.28MNew	SEC filing ↗ Aug 14, 2025	▾
07	Ewing Morris & Co. Investment Partners Ltd. CIK 1846838 · View history	$22.47M 1,280,648 shares	10.08%	+856.15K(+201.70%)Added	SEC filing ↗ Aug 15, 2025	▾
08	AMERICAN CENTURY COMPANIES INC CIK 748054 · View history	$18.40M 916,088 shares	0.01%	+334.86K(+57.60%)Added	SEC filing ↗ Aug 12, 2025	▾
09	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$16.17M 805,021 shares	0.00%	+8.86K(+1.10%)Added	SEC filing ↗ Aug 8, 2025	▾
10	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$13.13M 653,749 shares	0.00%	+112.56K(+20.80%)Added	SEC filing ↗ Aug 12, 2025	▾
11	MORGAN STANLEY CIK 895421 · View history	$12.19M 606,800 shares	0.00%	+45.92K(+8.20%)Added	SEC filing ↗ Aug 14, 2025	▾
12	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$11.66M 580,297 shares	0.00%	+92.36K(+18.90%)Added	SEC filing ↗ Aug 12, 2025	▾
13	O'Keefe Stevens Advisory, Inc. CIK 1780565 · View history	$10.97M 545,828 shares	3.08%	+252.04K(+85.80%)Added	SEC filing ↗ Jul 22, 2025	▾
14	Lightrock Netherlands B.V. CIK 2041485 · View history	$8.91M 520,373 shares	2.45%	-235.00K(-31.10%)Reduced	SEC filing ↗ Aug 4, 2025	▾
15	AMERIPRISE FINANCIAL INC CIK 820027 · View history	$7.34M 365,171 shares	0.00%	-109.44K(-23.10%)Reduced	SEC filing ↗ Aug 14, 2025	▾
16	LEE DANNER & BASS INC CIK 939219 · View history	$6.83M 340,000 shares	0.53%	-5.00K(-1.40%)Reduced	SEC filing ↗ Jul 31, 2025	▾
17	NORTHERN TRUST CORP CIK 73124 · View history	$6.34M 315,510 shares	0.00%	-111(0.00%)Reduced	SEC filing ↗ Aug 13, 2025	▾
18	Invesco Ltd. CIK 914208 · View history	$5.98M 297,806 shares	0.00%	+158.68K(+114.00%)Added	SEC filing ↗ Aug 13, 2025	▾
19	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$5.73M 285,051 shares	0.00%	+74.77K(+35.60%)Added	SEC filing ↗ Aug 14, 2025	▾
20	THOMPSON SIEGEL & WALMSLEY LLC CIK 1008322 · View history	$5.42M 269,513 shares	0.09%	-323.14K(-54.50%)Reduced	SEC filing ↗ Aug 6, 2025	▾

Showing 20 / 213 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

213

Cancelled or null records excluded

Disclosed shares

37,129,337

Not deduplicated across managers

Disclosed value

$741.07M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

COMPASS MINERALS INTERNATIONAL INC · Q2 2025

Explore all 213 reporting institutions.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.