233 institutional investment managers reported CMP positions in their Form 13F filings for Q2 2026, holding 38,876,906 shares worth $1.2B in total. Koch, Inc. reported the largest position.

Are funds buying or selling CMP?

In Q2 2026, 55 managers opened new CMP positions, 72 added, 56 trimmed and 26 sold out. Managers that filed in both quarters sold a net 1,651,442 shares.

How current is this CMP institutional ownership data?

It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.

Funds · CMP

Who owns CMP?

Institutional ownership of Compass Minerals Intl Inc from Form 13F, Q2 2026

233 institutional managers reported holding Compass Minerals Intl Inc (CMP) in Form 13F filings for Q2 2026, with 38,876,906 shares worth $1.2B. The largest reported holder was Koch, Inc. Managers that filed both quarters cut a net 1,651,442 shares (-4.1%). 55 opened new positions and 26 sold out.

Funds holding: 233
Value held: $1.2B
New / sold out: 55 / 26
Net shares, same filers: -4.1%

Holdings as of June 30, 2026, the end of Q2 2026. Managers have 45 days after a quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.

Largest holders of CMP

Fund	Value	Share of 13F holdings	Shares	Move
Koch, Inc.	$219M	18.1%	7,034,609	Unchanged
SailingStone Capital Partners LLC	$104M	8.6%	3,351,366	Trimmed
BlackRock, Inc.	$95.8M	7.9%	3,078,473	Added
State Street Corp	$76.0M	6.3%	2,441,899	Added
American Century Companies Inc	$70.8M	5.8%	2,273,578	Added
Vanguard Capital Management LLC	$55.3M	4.6%	1,775,518	Added
Irenic Capital Management LP	$33.3M	2.7%	1,068,378	Trimmed
Dimensional Fund Advisors LP	$29.6M	2.4%	951,151	Added
Jacobs Levy Equity Management, Inc	$27.6M	2.3%	886,009	New
Gumshoe Capital Management LLC	$27.2M	2.2%	872,348	Trimmed
Geode Capital Management, LLC	$26.2M	2.2%	841,419	Added
Vanguard Portfolio Management LLC	$21.7M	1.8%	698,271	Added
Charles Schwab Investment Management Inc	$20.4M	1.7%	655,606	Trimmed
AQR Capital Management LLC	$19.8M	1.6%	637,339	Added
Engine Capital Management, LP	$19.7M	1.6%	633,021	Trimmed
Newtyn Management, LLC	$19.7M	1.6%	632,326	Trimmed
O'Keefe Stevens Advisory, Inc.	$19.7M	1.6%	631,272	Added
Lee Danner & Bass Inc	$18.1M	1.5%	580,750	Trimmed
Federated Hermes, Inc.	$17.9M	1.5%	574,763	Added
Nuveen, LLC	$16.2M	1.3%	520,573	Added
Ewing Morris & Co. Investment Partners Ltd.	$14.8M	1.5%	570,800	Trimmed
Arrowstreet Capital, Limited Partnership	$14.8M	1.2%	474,512	Added
Morgan Stanley	$13.7M	1.1%	439,621	Added
Ameriprise Financial Inc	$13.6M	1.1%	437,294	Added
Hennessy Advisors Inc	$10.8M	0.9%	345,500	New

Share of 13F holdings is each fund's shares as a share of the 38,876,906 CMP shares all 13F filers reported, not of shares outstanding.

Biggest buyers in Q2 2026

Jacobs Levy Equity Management, Inc New+$27.6M
American Century Companies Inc Added+$18.5M
AQR Capital Management LLC Added+$17.7M
Arrowstreet Capital, Limited Partnership Added+$12.7M
Hennessy Advisors Inc New+$10.8M
Nuveen, LLC Added+$7.2M
BlackRock, Inc. Added+$7.0M
BNP Paribas Financial Markets Added+$7.0M
Raymond James Financial Inc Added+$5.0M
State of Wisconsin Investment Board Added+$4.9M

Biggest sellers in Q2 2026

SailingStone Capital Partners LLC Trimmed-$45.9M
Ewing Morris & Co. Investment Partners Ltd. Trimmed-$37.4M
Bank of America Corp Trimmed-$30.6M
Engine Capital Management, LP Trimmed-$25.1M
Gumshoe Capital Management LLC Trimmed-$12.2M
Irenic Capital Management LP Trimmed-$11.4M
CastleKnight Management LP Trimmed-$6.5M
Jane Street Group, LLC Sold out-$6.3M
Sourcerock Group LLC Sold out-$5.5M
Renaissance Technologies LLC Trimmed-$4.9M

The change in shares since the quarter before, adjusted for stock splits and priced at the Q2 2026 value per share. Funds bought $191M and sold $227M; 72 added and 56 trimmed.

Schedule 13D and 13G filings on CMP

Owners of more than 5% must file within days, so these can be newer than the 13F data.

2026-08-14AMERICAN CENTURY INVESTMENT MANAGEMENT INC SCHEDULE 13G filed by Compass Minerals Intl IncSchedule 13G
2026-05-12STATE STREET CORP SCHEDULE 13G filed by Compass Minerals Intl IncSchedule 13G
2026-02-09STATE STREET CORP SCHEDULE 13G filed by Compass Minerals Intl IncSchedule 13G
2025-11-10STATE STREET CORP SCHEDULE 13G filed by Compass Minerals Intl IncSchedule 13G
2025-04-28Gumshoe Capital Management LLC SCHEDULE 13G filed by Compass Minerals Intl IncSchedule 13G

Questions about CMP ownership

Who owns CMP stock?: 233 institutional investment managers reported CMP positions in their Form 13F filings for Q2 2026, holding 38,876,906 shares worth $1.2B in total. Koch, Inc. reported the largest position.
Are funds buying or selling CMP?: In Q2 2026, 55 managers opened new CMP positions, 72 added, 56 trimmed and 26 sold out. Managers that filed in both quarters sold a net 1,651,442 shares.
How current is this CMP institutional ownership data?: It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.

From the SEC's Form 13F data sets for Q2 2026: every 13F holdings report, matched to CMP by CUSIP. Options are left out. CMP news and filings · CMP insider trades · Top funds