The Mosaic Company
MX ˙ BMV ˙ US61945C1036
SecurityMX:MOS / The Mosaic Company
InstitutionHrt Financial Lp
Latest Disclosed Ownership79,600 shares
Latest Disclosed Value $ 2,029
Hrt Financial Lp ownership in MOS / The Mosaic Company

On May 14, 2026 - Hrt Financial Lp filed a 13F-HR form disclosing ownership of 79,600 shares of The Mosaic Company (MX:MOS) valued at $2,029 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 28,500 shares of The Mosaic Company.

Hrt Financial Lp 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 49,100 of underlying shares valued at $1,252 USD and put options representing 79,600 of underlying shares valued at $2,029 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.

MX: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)
2026-05-14 2026-03-31 13F MOSAIC PUT 61945C953 79,600 51,100 179.30 2 0.0051
2026-05-14 2026-03-31 13F MOSAIC CALL 61945C903 49,100 41,000 506.17 1 0.0031
2026-05-14 2026-03-31 13F MOSAIC COM 61945C103 751,298 722,798 19 0.0473
2026-02-12 2025-12-31 13F MOSAIC CO PUT 61945C953 28,500 18,100 174.04 1 0.0022
2026-02-12 2025-12-31 13F MOSAIC CO COM 61945C103 1,052,661 25
2025-11-14 2025-09-30 13F MOSAIC CO COM 61945C103 26,709 18,609 229.74 1 0.0034
2025-08-14 2025-06-30 13F MOSAIC CO CALL 61945C903 8,100 8,100 0 0.0013
2025-08-14 2025-06-30 13F MOSAIC CO COM 61945C103 335,355 12
2025-05-15 2025-03-31 13F MOSAIC CO COM 61945C103 307,745 297,345 2,859.09 8 0.0526
2025-02-14 2024-12-31 13F MOSAIC CO PUT 61945C953 10,400 10,400 -93.76 0 -100.00 0.0013
2024-11-12 2024-09-30 13F MOSAIC CO COM 61945C103 166,795 -348,894 -67.66 4 -71.43 0.0222
2024-08-12 2024-06-30 13F MOSAIC CO COM 61945C103 515,689 428,643 492.43 15 600.00 0.0836
2024-05-13 2024-03-31 13F MOSAIC CO COM 61945C103 87,046 87,046 3 0.0174
2024-02-09 2023-12-31 13F MOSAIC CO COM 61945C103 0 -65,747 -100.00 0 -100.00
2023-11-13 2023-09-30 13F MOSAIC CO COM 61945C103 65,747 18,424 38.93 2 100.00 0.0233
2023-08-11 2023-06-30 13F MOSAIC CO COM 61945C103 47,323 47,323 2 0.0155
2023-05-12 2023-03-31 13F MOSAIC CO PUT 61945C953 0 -4,900 -100.00 0 0.0000
2023-05-12 2023-03-31 13F MOSAIC CO COM 61945C103 0 -4,900 0 0.0000
2023-02-10 2022-12-31 13F MOSAIC CO PUT 61945C953 4,900 -3,500 -41.67 0 -100.00 0.0030
2023-02-10 2022-12-31 13F MOSAIC CO COM 61945C103 261,445 11
2022-11-14 2022-09-30 13F MOSAIC CO PUT 61945C953 8,400 8,400 405 0.0044
2022-11-14 2022-09-30 13F MOSAIC CO COM 61945C103 140,538 6,792
2022-08-12 2022-06-30 13F MOSAIC CO OM 61945C103 200,289 200,289 9,459 0.1037
2021-02-16 2020-12-31 13F MOSAIC CO COM 61945C103 0 -135,537 -100.00 0 -100.00
2020-11-13 2020-09-30 13F MOSAIC CO COM 61945C103 135,537 118,008 673.22 2,476 1,030.59 0.0719
2020-08-14 2020-06-30 13F MOSAIC CO COM 61945C103 17,529 17,529 219 0.0066
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
(%)
2026-05-14 2026-03-31 13F MOSAIC CALL 49,100 506.17 1 n/a n/a n/a
2025-08-14 2025-06-30 13F MOSAIC CO CALL 8,100 0 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
(%)
2026-05-14 2026-03-31 13F MOSAIC PUT 79,600 179.30 2 n/a n/a n/a
2026-02-12 2025-12-31 13F MOSAIC CO PUT 28,500 174.04 1 n/a n/a n/a
2025-02-14 2024-12-31 13F MOSAIC CO PUT 10,400 -93.76 0 -100.00 n/a n/a n/a
2023-05-12 2023-03-31 13F MOSAIC CO PUT 0 -100.00 0 n/a n/a n/a
2023-02-10 2022-12-31 13F MOSAIC CO PUT 4,900 -41.67 0 -100.00 n/a n/a n/a
2022-11-14 2022-09-30 13F MOSAIC CO PUT 8,400 405 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.