MP Materials Corp.
US ˙ NYSE ˙ US5533681012

SecurityMP / MP Materials Corp.
InstitutionCapital Fund Management S.a.
Latest Disclosed Ownership173,529 shares
Latest Disclosed Value $ 8,374,509
Capital Fund Management S.a. ownership in MP / MP Materials Corp.

On May 14, 2026 - Capital Fund Management S.a. filed a 13F-HR form disclosing ownership of 173,529 shares of MP Materials Corp. (US:MP) valued at $8,374,510 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 714,530 shares of MP Materials Corp.. This represents a change in shares of -75.71% during the quarter. The current value of the position is $11,895,413 USD.

Capital Fund Management S.a. has a history of taking positions in derivatives of the underlying security (MP) in the form of stock options. The firm currently holds call options representing 299,300 of underlying shares valued at $14,444,218 USD and put options representing 203,200 of underlying shares valued at $9,806,432 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.

MP / MP Materials Corp. 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 MP MATERIALS CORP COM CL A MP MATERIALS CORP COM CL A 553368101 173,529 -541,001 -75.71 8,375 -76.80 0.0379
2026-02-17 2025-12-31 13F MP MATERIALS CORP COM CL A MP MATERIALS CORP COM CL A 553368101 714,530 325,286 83.57 36,098 38.27 0.1003
2025-11-13 2025-09-30 13F MP MATERIALS COM CL A 553368101 389,244 389,244 26,107 0.0684
2022-05-12 2022-03-31 13F MP MATERIALS COM CL A 553368101 0 -51,563 -100.00 0 -100.00
2022-02-10 2021-12-31 13F MP MATERIALS COM CL A 553368101 51,563 -96,607 -65.20 2,342 -50.97 0.0169
2021-11-12 2021-09-30 13F MP MATERIALS COM CL A 553368101 148,170 148,170 4,776 0.0354
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 MP MATERIALS CORP COM CL A MP MATERIALS CORP COM CL A Call 299,300 15.74 14,444 10.56 n/a n/a n/a
2026-02-17 2025-12-31 13F MP MATERIALS CORP COM CL A MP MATERIALS CORP COM CL A Call 258,600 12.53 13,064 -15.23 n/a n/a n/a
2025-11-13 2025-09-30 13F MP MATERIALS COM CL A Call 229,800 23.35 15,413 148.66 n/a n/a n/a
2025-08-13 2025-06-30 13F MP MATERIALS COM CL A Call 186,300 350.00 6,198 513.66 n/a n/a n/a
2025-05-14 2025-03-31 13F MP MATERIALS COM CL A Call 41,400 -67.91 1,011 -49.80 n/a n/a n/a
2025-02-13 2024-12-31 13F MP MATERIALS COM CL A Call 129,000 -32.64 2,012 -40.46 n/a n/a n/a
2024-11-13 2024-09-30 13F MP MATERIALS COM CL A Call 191,500 -2.30 3,380 35.43 n/a n/a n/a
2024-08-13 2024-06-30 13F MP MATERIALS COM CL A Call 196,000 -54.84 2,495 -59.80 n/a n/a n/a
2024-05-15 2024-03-31 13F MP MATERIALS COM CL A Call 434,000 -48.07 6,206 -62.59 n/a n/a n/a
2024-02-14 2023-12-31 13F MP MATERIALS COM CL A Call 835,700 5,703.47 16,589 5,932.00 n/a n/a n/a
2023-11-14 2023-09-30 13F MP MATERIALS COM CL A Call 14,400 -93.89 275 -94.90 n/a n/a n/a
2023-08-14 2023-06-30 13F MP MATERIALS COM CL A Call 235,500 5,388 n/a n/a n/a
2022-05-12 2022-03-31 13F MP MATERIALS COM CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-10 2021-12-31 13F MP MATERIALS COM CL A Call 118,400 5,378 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 MP MATERIALS CORP COM CL A MP MATERIALS CORP COM CL A Put 203,200 56.91 9,806 49.89 n/a n/a n/a
2026-02-17 2025-12-31 13F MP MATERIALS CORP COM CL A MP MATERIALS CORP COM CL A Put 129,500 -55.89 6,542 -66.78 n/a n/a n/a
2025-11-13 2025-09-30 13F MP MATERIALS COM CL A Put 293,600 337.56 19,692 782.21 n/a n/a n/a
2025-08-13 2025-06-30 13F MP MATERIALS COM CL A Put 67,100 2,232 n/a n/a n/a
2025-05-14 2025-03-31 13F MP MATERIALS COM CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-13 2024-12-31 13F MP MATERIALS COM CL A Put 41,500 -40.20 647 -47.14 n/a n/a n/a
2024-11-13 2024-09-30 13F MP MATERIALS COM CL A Put 69,400 -49.78 1,225 -30.42 n/a n/a n/a
2024-08-13 2024-06-30 13F MP MATERIALS COM CL A Put 138,200 -60.87 1,759 -65.17 n/a n/a n/a
2024-05-15 2024-03-31 13F MP MATERIALS COM CL A Put 353,200 -2.02 5,051 -29.42 n/a n/a n/a
2024-02-14 2023-12-31 13F MP MATERIALS COM CL A Put 360,500 7,156 n/a n/a n/a
2023-11-14 2023-09-30 13F MP MATERIALS COM CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-08-14 2023-06-30 13F MP MATERIALS COM CL A Put 58,500 1,338 n/a n/a n/a
2022-05-12 2022-03-31 13F MP MATERIALS COM CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-10 2021-12-31 13F MP MATERIALS COM CL A Put 120,500 864.00 5,473 1,261.44 n/a n/a n/a
2021-11-12 2021-09-30 13F MP MATERIALS COM CL A Put 12,500 403 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.