Compass Minerals International, Inc.
US ˙ NYSE ˙ US20451N1019

SecurityCMP / Compass Minerals International, Inc.
InstitutionTwo Sigma Investments, Lp
ManagerJohn Overdeck, David Siegel
Latest Disclosed Ownership35,874 shares
Latest Disclosed Value $ 837,658
Two Sigma Investments, Lp ownership in CMP / Compass Minerals International, Inc.

On May 15, 2026 - Two Sigma Investments, Lp filed a 13F-HR form disclosing ownership of 35,874 shares of Compass Minerals International, Inc. (US:CMP) valued at $837,658 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 35,774 shares of Compass Minerals International, Inc.. This represents a change in shares of 0.28% during the quarter. The current value of the position is $1,062,947 USD.

Two Sigma Investments, Lp has a history of taking positions in derivatives of the underlying security (CMP) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

CMP / Compass Minerals International, Inc. Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F COMPASS MINERALS INTL COM 20451N101 35,874 100 0.28 838 19.23 0.0007
2026-02-17 2025-12-31 13F COMPASS MINERALS INTL COM 20451N101 35,774 -18,302 -33.84 703 -32.37 0.0010
2025-11-14 2025-09-30 13F COMPASS MINERALS INTL COM 20451N101 54,076 0 0.00 1,038 -4.42 0.0015
2025-08-14 2025-06-30 13F COMPASS MINERALS INTL COM 20451N101 54,076 -6,150 -10.21 1,086 94.28 0.0019
2025-05-15 2025-03-31 13F COMPASS MINERALS INTL COM 20451N101 60,226 -25,864 -30.04 560 -42.25 0.0012
2025-02-14 2024-12-31 13F COMPASS MINERALS INTL COM 20451N101 86,090 18,326 27.04 969 18.92 0.0021
2024-11-14 2024-09-30 13F COMPASS MINERALS INTL COM 20451N101 67,764 67,764 815 0.0018
2023-11-14 2023-09-30 13F COMPASS MINERALS INTL COM 20451N101 0 -62,958 -100.00 0 -100.00
2023-08-14 2023-06-30 13F COMPASS MINERALS INTL COM 20451N101 62,958 45,594 262.58 2,141 259.66 0.0054
2023-05-15 2023-03-31 13F COMPASS MINERALS INTL COM 20451N101 17,364 -38,280 -68.79 595 -73.91 0.0017
2023-02-14 2022-12-31 13F COMPASS MINERALS INTL COM 20451N101 55,644 48,980 734.99 2,281 787.55 0.0072
2022-11-14 2022-09-30 13F COMPASS MINERALS INTL COM 20451N101 6,664 -23,800 -78.12 257 -76.16 0.0009
2022-08-15 2022-06-30 13F COMPASS MINERALS INTL COM 20451N101 30,464 30,464 1,078 0.0036
2022-02-14 2021-12-31 13F COMPASS MINERALS INTL COM 20451N101 0 -42,115 -100.00 0 -100.00
2021-11-15 2021-09-30 13F COMPASS MINERALS INTL COM 20451N101 42,115 21,462 103.92 2,712 121.57 0.0061
2021-08-16 2021-06-30 13F COMPASS MINERALS INTL COM 20451N101 20,653 20,653 1,224 0.0028
2020-05-15 2020-03-31 13F COMPASS MINERALS INTL COM 20451N101 0 -5,428 -100.00 0 -100.00
2020-02-14 2019-12-31 13F COMPASS MINERALS INTL COM 20451N101 5,428 -47,773 -89.80 331 -88.99 0.0010
2019-11-14 2019-09-30 13F COMPASS MINERALS INTL COM 20451N101 53,201 -14,750 -21.71 3,005 -19.52 0.0101
2019-08-14 2019-06-30 13F COMPASS MINERALS INTL COM 20451N101 67,951 53,062 356.38 3,734 360.99 0.0125
2019-05-15 2019-03-31 13F COMPASS MINERALS INTL COM 20451N101 14,889 14,889 -78.09 810 -78.31 0.0026
2016-05-16 2016-03-31 13F COMPASS MINERALS INTL COM 20451N101 0 0 0 0.0000
2016-02-16 2015-12-31 13F COMPASS MINERALS INTL COM 20451N101 0 0 0 0.0000
2015-11-16 2015-09-30 13F COMPASS MINERALS INTL COM 20451N101 0 -89,434 -100.00 0 -100.00
2016-02-09 2015-06-30 13F/A-1 COMPASS MINERALS INTL COM 20451N101 89,434 -68,371 -43.33 7,346 -50.06 0.0357
2015-08-14 2015-06-30 13F COMPASS MINERALS INTL COM 20451N101 89,434 7,346
2016-02-09 2015-03-31 13F/A-1 COMPASS MINERALS INTL COM 20451N101 157,805 34,855 28.35 14,709 37.78 0.0724
2015-05-15 2015-03-31 13F COMPASS MINERALS INTL COM 20451N101 157,805 14,709
2016-02-09 2014-12-31 13F/A-1 COMPASS MINERALS INTL COM 20451N101 122,950 92,611 305.25 10,676 317.52 0.0614
2015-02-17 2014-12-31 13F COMPASS MINERALS INTL COM 20451N101 122,950 10,676
2016-02-09 2014-09-30 13F/A-1 COMPASS MINERALS INTL COM 20451N101 30,339 -172,212 -85.02 2,557 -86.81 0.0120
2014-11-14 2014-09-30 13F COMPASS MINERALS INTL COM 20451N101 30,339 2,557
2016-02-09 2014-06-30 13F/A-1 COMPASS MINERALS INTL COM 20451N101 202,551 26,889 15.31 19,392 33.77 0.0915
2014-08-14 2014-06-30 13F COMPASS MINERALS INTL COM 20451N101 202,551 19,392
2014-05-15 2014-03-31 13F COMPASS MINERALS INTL COM 20451N101 175,662 159,682 999.26 14,496 1,033.39 0.0777
2014-02-14 2013-12-31 13F COMPASS MINERALS INTL COM 20451N101 15,980 11,416 250.13 1,279 267.53 0.0071
2013-11-14 2013-09-30 13F COMPASS MINERALS INTL COM 20451N101 4,564 0 0.00 348 -9.84 0.0022
2013-08-14 2013-06-30 13F COMPASS MINERALS INTL COM 20451N101 4,564 4,564 386 0.0027
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2019-08-14 2019-06-30 13F COMPASS MINERALS INTL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-05-15 2019-03-31 13F COMPASS MINERALS INTL COM Call 9,200 500 n/a n/a n/a
2019-02-14 2018-12-31 13F COMPASS MINERALS INTL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2018-11-14 2018-09-30 13F COMPASS MINERALS INTL COM Call 9,200 61.40 618 64.80 n/a n/a n/a
2018-08-14 2018-06-30 13F COMPASS MINERALS INTL COM Call 5,700 375 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2019-08-14 2019-06-30 13F COMPASS MINERALS INTL COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-05-15 2019-03-31 13F COMPASS MINERALS INTL COM Put 10,000 544 n/a n/a n/a
2019-02-14 2018-12-31 13F COMPASS MINERALS INTL COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-11-14 2018-09-30 13F COMPASS MINERALS INTL COM Put 22,100 116.67 1,485 121.31 n/a n/a n/a
2018-08-14 2018-06-30 13F COMPASS MINERALS INTL COM Put 10,200 671 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.