The Mosaic Company
US ˙ NYSE ˙ US61945C1036

SecurityMOS / The Mosaic Company
InstitutionWalleye Capital LLC
Latest Disclosed Ownership229,385 shares
Latest Disclosed Value $ 5,849,318
Walleye Capital LLC ownership in MOS / The Mosaic Company

On May 13, 2026 - Walleye Capital LLC filed a 13F-HR/A form disclosing ownership of 229,385 shares of The Mosaic Company (US:MOS) valued at $5,849,318 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 26,115 shares of The Mosaic Company. This represents a change in shares of 778.36% during the quarter. The current value of the position is $5,101,522 USD.

Walleye Capital LLC has a history of taking positions in derivatives of the underlying security (MOS) in the form of stock options. The firm currently holds call options representing 48,700 of underlying shares valued at $1,241,850 USD and put options representing 72,700 of underlying shares valued at $1,853,850 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.

MOS / The Mosaic Company 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)
2026-05-13 2026-03-31 13F/A-1 MOSAIC COM 61945C103 229,385 203,270 778.36 5,849 829.89 0.0243
2026-05-08 2026-03-31 13F MOSAIC COM 61945C103 229,385 203,270 5,849 0.0243
2026-02-13 2025-12-31 13F MOSAIC CO COM 61945C103 26,115 -30,883 -54.18 629 -68.17 0.0019
2025-11-14 2025-09-30 13F MOSAIC CO COM 61945C103 56,998 -7,938 -12.22 1,977 -16.55 0.0074
2025-08-13 2025-06-30 13F MOSAIC CO COM 61945C103 64,936 34,456 113.04 2,369 187.73 0.0092
2025-05-14 2025-03-31 13F MOSAIC CO COM 61945C103 30,480 -44,097 -59.13 823 -55.10 0.0037
2025-02-13 2024-12-31 13F MOSAIC CO COM 61945C103 74,577 -16,743 -18.33 1,833 -25.03 0.0045
2024-11-14 2024-09-30 13F MOSAIC CO COM 61945C103 91,320 39,897 77.59 2,446 64.54 0.0051
2024-08-14 2024-06-30 13F MOSAIC CO COM 61945C103 51,423 -61,694 -54.54 1,486 -59.52 0.0027
2024-05-15 2024-03-31 13F MOSAIC CO COM 61945C103 113,117 1,185 1.06 3,672 -8.20 0.0065
2024-02-14 2023-12-31 13F MOSAIC CO COM 61945C103 111,932 -114,599 -50.59 3,999 -50.41 0.0085
2023-11-21 2023-09-30 13F/A-1 MOSAIC CO COM 61945C103 226,531 191,375 544.36 8,065 555.61 0.0206
2023-11-14 2023-09-30 13F MOSAIC CO COM 61945C103 226,531 191,375 8,065 0.0207
2023-08-14 2023-06-30 13F MOSAIC CO COM 61945C103 35,156 35,156 1,230 0.0045
2023-05-15 2023-03-31 13F MOSAIC CO COM 61945C103 0 -4,223 -100.00 0 -100.00
2023-02-14 2022-12-31 13F MOSAIC CO COM 61945C103 4,223 452 11.99 185 1.65 0.0034
2022-11-14 2022-09-30 13F MOSAIC CO COM 61945C103 3,771 3,771 182 0.0035
2022-05-27 2022-03-31 13F/A-01 MOSAIC CO COM 61945C103 0 -23,000 -100.00 0 -100.00
2022-05-16 2022-03-31 13F MOSAIC CO COM 61945C103 0 -23,000 0
2022-05-27 2021-12-31 13F/A-01 MOSAIC CO COM 61945C103 23,000 6,000 35.29 904 48.93 0.0281
2022-03-03 2021-12-31 13F MOSAIC CO COM 61945C103 23,000 6,000 904 0.0226
2021-11-15 2021-09-30 13F MOSAIC CO COM 61945C103 17,000 17,000 607 0.0172
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
(%)
2026-05-13 2026-03-31 13F/A MOSAIC COM Call 48,700 5.18 1,242 11.30 n/a n/a n/a
2026-05-08 2026-03-31 13F MOSAIC COM Call 48,700 1,242 n/a n/a n/a
2026-02-13 2025-12-31 13F MOSAIC CO COM Call 46,300 66.55 1,115 15.66 n/a n/a n/a
2025-11-14 2025-09-30 13F MOSAIC CO COM Call 27,800 9,166.67 964 9,540.00 n/a n/a n/a
2025-08-13 2025-06-30 13F MOSAIC CO COM Call 300 -98.57 11 -98.24 n/a n/a n/a
2025-05-14 2025-03-31 13F MOSAIC CO COM Call 21,000 -72.94 567 -70.27 n/a n/a n/a
2025-02-13 2024-12-31 13F MOSAIC CO COM Call 77,600 152.77 1,907 132.00 n/a n/a n/a
2024-11-14 2024-09-30 13F MOSAIC CO COM Call 30,700 -41.97 822 -46.20 n/a n/a n/a
2024-08-14 2024-06-30 13F MOSAIC CO COM Call 52,900 50.71 1,529 34.15 n/a n/a n/a
2024-05-15 2024-03-31 13F MOSAIC CO COM Call 35,100 -73.41 1,139 -75.85 n/a n/a n/a
2024-02-14 2023-12-31 13F MOSAIC CO COM Call 132,000 17.75 4,716 18.20 n/a n/a n/a
2023-11-21 2023-09-30 13F/A MOSAIC CO COM Call 112,100 -29.41 3,991 -28.21 n/a n/a n/a
2023-11-14 2023-09-30 13F MOSAIC CO COM Call 112,100 3,991 n/a n/a n/a
2023-08-14 2023-06-30 13F MOSAIC CO COM Call 158,800 220.81 5,558 144.74 n/a n/a n/a
2023-05-15 2023-03-31 13F MOSAIC CO COM Call 49,500 366.98 2,271 388.39 n/a n/a n/a
2023-02-14 2022-12-31 13F MOSAIC CO COM Call 10,600 -63.95 465 -67.28 n/a n/a n/a
2022-11-14 2022-09-30 13F MOSAIC CO COM Call 29,400 1,421 n/a n/a n/a
2020-05-15 2020-03-31 13F MOSAIC CO COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-02-14 2019-12-31 13F MOSAIC CO COM Call 211,000 120.94 4,566 133.20 n/a n/a n/a
2019-11-14 2019-09-30 13F MOSAIC CO COM Call 95,500 1,465.57 1,958 1,179.74 n/a n/a n/a
2019-08-14 2019-06-30 13F MOSAIC CO COM Call 6,100 153 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
(%)
2026-05-13 2026-03-31 13F/A MOSAIC COM Put 72,700 15.21 1,854 21.91 n/a n/a n/a
2026-05-08 2026-03-31 13F MOSAIC COM Put 72,700 1,854 n/a n/a n/a
2026-02-13 2025-12-31 13F MOSAIC CO COM Put 63,100 106.21 1,520 43.26 n/a n/a n/a
2025-11-14 2025-09-30 13F MOSAIC CO COM Put 30,600 37.22 1,061 30.50 n/a n/a n/a
2025-08-13 2025-06-30 13F MOSAIC CO COM Put 22,300 -38.57 814 -17.04 n/a n/a n/a
2025-05-14 2025-03-31 13F MOSAIC CO COM Put 36,300 -79.64 980 -77.64 n/a n/a n/a
2025-02-13 2024-12-31 13F MOSAIC CO COM Put 178,300 -11.91 4,383 -19.15 n/a n/a n/a
2024-11-14 2024-09-30 13F MOSAIC CO COM Put 202,400 -24.59 5,420 -30.12 n/a n/a n/a
2024-08-14 2024-06-30 13F MOSAIC CO COM Put 268,400 88.88 7,757 68.17 n/a n/a n/a
2024-05-15 2024-03-31 13F MOSAIC CO COM Put 142,100 -49.95 4,613 -54.53 n/a n/a n/a
2024-02-14 2023-12-31 13F MOSAIC CO COM Put 283,900 -35.81 10,144 -35.58 n/a n/a n/a
2023-11-21 2023-09-30 13F/A MOSAIC CO COM Put 442,300 96.14 15,746 99.51 n/a n/a n/a
2023-11-14 2023-09-30 13F MOSAIC CO COM Put 442,300 15,746 n/a n/a n/a
2023-08-14 2023-06-30 13F MOSAIC CO COM Put 225,500 880.43 7,892 648.06 n/a n/a n/a
2023-05-15 2023-03-31 13F MOSAIC CO COM Put 23,000 -18.73 1,055 -14.99 n/a n/a n/a
2023-02-14 2022-12-31 13F MOSAIC CO COM Put 28,300 1,315.00 1,242 1,179.38 n/a n/a n/a
2022-11-14 2022-09-30 13F MOSAIC CO COM Put 2,000 97 n/a n/a n/a
2020-05-15 2020-03-31 13F MOSAIC CO COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-02-14 2019-12-31 13F MOSAIC CO COM Put 110,600 368.64 2,393 394.42 n/a n/a n/a
2019-11-14 2019-09-30 13F MOSAIC CO COM Put 23,600 122.64 484 82.64 n/a n/a n/a
2019-08-14 2019-06-30 13F MOSAIC CO COM Put 10,600 265 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.