MP MATERIALS CORP MP
COM CL A · Common Stock · CUSIP 553368101 · ISIN US5533681012
American Rare Earth materials company
- SectorMaterials
- IndustryMetal Mining
- HeadquartersLas Vegas, NV
- Websitempmaterials.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($13.9m this quarter). Holder counts are more reliable. Shares outstanding: 177.2m as of 2025-10-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $67.14. Options: 45 managers hold calls ($2.0bn notional), 38 hold puts ($1.9bn).
Trends to Q3 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 395 |
| Q4 2022 | 408 |
| Q1 2023 | 411 |
| Q2 2023 | 388 |
| Q3 2023 | 379 |
| Q4 2023 | 392 |
| Q1 2024 | 380 |
| Q2 2024 | 387 |
| Q3 2024 | 367 |
| Q4 2024 | 387 |
| Q1 2025 | 409 |
| Q2 2025 | 489 |
| Q3 2025 | 679 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2023 | 187 | 176 |
| Q1 2024 | 196 | 176 |
| Q2 2024 | 185 | 175 |
| Q3 2024 | 162 | 200 |
| Q4 2024 | 160 | 187 |
| Q1 2025 | 207 | 176 |
| Q2 2025 | 256 | 220 |
| Q3 2025 | 439 | 254 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q4 2024 | $163.2m | $179.8m | 1.10 |
| Q1 2025 | $303.3m | $244.8m | 0.81 |
| Q2 2025 | $794.4m | $499.9m | 0.63 |
| Q3 2025 | $2.0bn | $1.9bn | 0.95 |
Biggest buyers
| PRICE T ROWE ASSOCIATES INC /MD/ | Added | +2.8m |
| JPMORGAN CHASE & CO | Added | +2.6m |
| REAVES W H & CO INC | Added | +1.6m |
| Tidal Investments LLC | Added | +1.6m |
| Hancock Prospecting Pty Ltd | Added | +1.0m |
| Amundi | Added | +887.1k |
| Driehaus Capital Management LLC | New | +829.1k |
| FMR LLC | Added | +692.4k |
| GOLDMAN SACHS GROUP INC | Added | +629.2k |
| MILLENNIUM MANAGEMENT LLC | New | +534.6k |
Biggest sellers
| CAXTON ASSOCIATES LLP | Reduced | -3.9m |
| BANK OF AMERICA CORP /DE/ | Reduced | -3.9m |
| Walleye Trading LLC | Sold out | -2.4m |
| BlackRock, Inc. | Reduced | -2.1m |
| NATIONAL BANK OF CANADA /FI/ | Reduced | -2.0m |
| UBS Group AG | Reduced | -2.0m |
| TWO SIGMA INVESTMENTS, LP | Reduced | -1.4m |
| TWO SIGMA ADVISERS, LP | Reduced | -1.4m |
| AMERIPRISE FINANCIAL INC | Reduced | -969.3k |
| SEGALL BRYANT & HAMILL, LLC | Reduced | -748.8k |
Biggest calls
| UBS Group AG | Added | $465.8m6.9m shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $360.0m5.4m shares |
| CITADEL ADVISORS LLC | Added | $234.5m3.5m shares |
| JANE STREET GROUP, LLC | Added | $166.1m2.5m shares |
| IMC-Chicago, LLC | Added | $87.2m1.3m shares |
| SIMPLEX TRADING, LLC | Added | $84.9m1.3m shares |
| GROUP ONE TRADING LLC | Reduced | $83.6m1.2m shares |
| PEAK6 LLC | Added | $80.1m1.2m shares |
| WOLVERINE TRADING, LLC | Added | $59.3m869.4k shares |
| D. E. Shaw & Co., Inc. | Added | $55.8m832.5k shares |
Biggest puts
| Squarepoint Ops LLC | Added | $317.8m4.7m shares |
| CITADEL ADVISORS LLC | Added | $258.4m3.9m shares |
| JANE STREET GROUP, LLC | Added | $210.0m3.1m shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $157.5m2.3m shares |
| PEAK6 LLC | Added | $132.8m2.0m shares |
| Tidal Investments LLC | New | $107.3m1.6m shares |
| Parallax Volatility Advisers, L.P. | Unchanged | $93.6m1.4m shares |
| IMC-Chicago, LLC | Added | $90.6m1.4m shares |
| TWO SIGMA INVESTMENTS, LP | Added | $80.9m1.2m shares |
| Walleye Trading LLC | Added | $68.2m1.0m shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution +1.3 pts · filed 2026-10-27 | 8.0% |
| Litinsky James H. 13D · may seek influence -1.7 pts · filed 2026-01-13 | 7.3% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27), BANK OF NOVA SCOTIA (3.7%, 2026-01-27), Shenghe Resources Holding Co., Ltd. (3.1%, 2025-11-25)
Insider purchases and sales in Q3 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2023 | 0 | — | 0 | — | — |
| Q1 2024 | 0 | — | 0 | — | — |
| Q2 2024 | 0 | — | 2 | $6.6m | $846.5k |
| Q3 2024 | 1 | $325.2k | 0 | — | — |
| Q4 2024 | 0 | — | 3 | $59.1m | $42.5m |
| Q1 2025 | 0 | — | 2 | $59.5m | $48.3m |
| Q2 2025 | 0 | — | 2 | $5.8m | $5.8m |
| Q3 2025 | 0 | — | 2 | $11.4m | $584.8k |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-08-29 | Rosenthal Michael Stuart Chief Operating Officer | Sold | $10.8m150.0k shares |
| 2025-08-01 | Hoops Elliot Dean General Counsel and Secretary · By Hoops Family Trust | Sold plan | $382.3k6.3k shares |
| 2025-07-01 | Hoops Elliot Dean General Counsel and Secretary · By Hoops Family Trust | Sold plan | $202.5k6.3k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q3 2025
| Manager | Shares | Change |
|---|---|---|
| Hancock Prospecting Pty Ltd 32.45% of their portfolio | 14.9m $996.7m | Added +1.0m |
| VANGUARD GROUP INC 0.01% of their portfolio | 14.0m $940.4m | Added +364.0k |
| BlackRock, Inc. 0.01% of their portfolio | 12.7m $851.4m | Reduced -2.1m |
| STATE STREET CORP 0.01% of their portfolio | 5.8m $390.9m | Reduced -679.3k |
| JPMORGAN CHASE & CO 0.01% of their portfolio | 5.8m $389.8m | Added +2.6m |
| MORGAN STANLEY 0.02% of their portfolio | 3.8m $256.9m | Reduced -189.6k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.02% of their portfolio | 3.5m $232.5m | Added +2.8m |
| Invesco Ltd. 0.03% of their portfolio | 3.2m $211.4m | Added +118.6k |
| UBS Group AG 0.04% of their portfolio | 3.1m $207.5m | Reduced -2.0m |
| COOPERMAN LEON G 6.28% of their portfolio | 3.0m $201.2m | Reduced -240.0k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 2.7m $183.8m | Reduced -3.9m |
| REAVES W H & CO INC 3.09% of their portfolio | 2.6m $173.7m | Added +1.6m |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 2.3m $157.5m | Added +375.9k |
| BNP PARIBAS FINANCIAL MARKETS 0.12% of their portfolio | 2.3m $152.8m | Reduced -642.9k |
| DIMENSIONAL FUND ADVISORS LP 0.03% of their portfolio | 1.9m $128.2m | Reduced -281.2k |
| FMR LLC 0.01% of their portfolio | 1.8m $119.3m | Added +692.4k |
| VAN ECK ASSOCIATES CORP 0.10% of their portfolio | 1.7m $110.8m | Reduced -80.9k |
| Tidal Investments LLC 0.47% of their portfolio | 1.6m $110.5m | Added +1.6m |
| RENAISSANCE TECHNOLOGIES LLC 0.12% of their portfolio | 1.4m $94.2m | Added +174.5k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 1.2m $80.5m | Reduced -264.0k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 1.1m $75.1m | Added +192.9k |
| TWO SIGMA INVESTMENTS, LP 0.11% of their portfolio | 1.0m $68.5m | Reduced -1.4m |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.23% of their portfolio | 1.0m $68.1m | Added +352.4k |
| BAILLIE GIFFORD & CO 0.05% of their portfolio | 954.6k $64.0m | Reduced -363.4k |
| Amundi 0.02% of their portfolio | 954.3k $70.9m | Added +887.1k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 909.5k $61.0m | Added +629.2k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 850.9k $57.1m | Reduced -164.8k |
| Driehaus Capital Management LLC 0.40% of their portfolio | 829.1k $55.6m | New |
| Man Group plc 0.10% of their portfolio | 763.0k $51.2m | Added +277.9k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 740.1k $49.6m | Reduced -396.6k |
| Connor, Clark & Lunn Investment Management Ltd. 0.16% of their portfolio | 737.3k $49.5m | Added +388.5k |
| BANK OF MONTREAL /CAN/ 0.02% of their portfolio | 723.4k $48.5m | Reduced -107.3k |
| VOYA INVESTMENT MANAGEMENT LLC 0.05% of their portfolio | 692.5k $46.4m | Added +71.4k |
| MARSHALL WACE, LLP 0.05% of their portfolio | 671.2k $45.0m | Added +423.4k |
| CITIGROUP INC 0.03% of their portfolio | 578.9k $38.8m | Added +429.8k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 539.1k $36.2m | Reduced -30.0k |
| MILLENNIUM MANAGEMENT LLC 0.03% of their portfolio | 534.6k $35.9m | New |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 519.9k $34.9m | Added +206.6k |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 481.6k $32.3m | Reduced -30.0k |
| SEGALL BRYANT & HAMILL, LLC 0.40% of their portfolio | 448.1k $30.1m | Reduced -748.8k |
| LPL Financial LLC 0.01% of their portfolio | 444.7k $29.8m | Added +288.9k |
| FIRST TRUST ADVISORS LP 0.02% of their portfolio | 434.2k $29.1m | Reduced -40.9k |
| HSBC HOLDINGS PLC 0.02% of their portfolio | 413.9k $27.5m | Reduced -111.4k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 392.1k $26.3m | New |
| CAPITAL FUND MANAGEMENT S.A. 0.26% of their portfolio | 389.2k $26.1m | New |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 371.4k $24.8m | Reduced -969.3k |
| PINNACLE ASSOCIATES LTD 0.32% of their portfolio | 361.4k $24.2m | Reduced -124.4k |
| JANE STREET GROUP, LLC 0.03% of their portfolio | 355.9k $23.9m | New |
| Gotham Asset Management, LLC 0.10% of their portfolio | 348.2k $23.4m | Reduced -151.2k |
| BANK OF NOVA SCOTIA 0.04% of their portfolio | 346.1k $23.2m | Reduced -214.4k |
| RHUMBLINE ADVISERS 0.02% of their portfolio | 343.1k $23.0m | Added +72.2k |
| Blackstone Inc. 0.09% of their portfolio | 325.0k $21.8m | New |
| HRT FINANCIAL LP 0.10% of their portfolio | 320.0k $21.5m | Reduced -53.4k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.03% of their portfolio | 319.9k $21.5m | Added +299.0k |
| GROUPAMA ASSET MANAGMENT 0.01% of their portfolio | 300.0k $958.2k | Reduced -300.0k |
| Rheos Capital Works Inc. 1.13% of their portfolio | 300.0k $20.1m | Unchanged |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 298.9k $20.0m | Reduced -297.7k |
| STIFEL FINANCIAL CORP 0.02% of their portfolio | 277.6k $18.6m | Added +69.5k |
| ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio | 254.2k $17.1m | Added +107.5k |
| Squarepoint Ops LLC 0.04% of their portfolio | 252.8k $17.0m | Added +58.0k |
| IMC-Chicago, LLC 0.30% of their portfolio | 250.3k $16.8m | New |
| Calamos Advisors LLC 0.07% of their portfolio | 249.4k $16.7m | New |
| Nuveen, LLC 0.00% of their portfolio | 246.8k $16.6m | Added +1.4k |
| TWO SIGMA ADVISERS, LP 0.03% of their portfolio | 246.1k $16.5m | Reduced -1.4m |
| KADENSA CAPITAL Ltd 1.69% of their portfolio | 245.3k $16.5m | New |
| Rockefeller Capital Management L.P. 0.03% of their portfolio | 243.4k $16.3m | Reduced -110.5k |
| HITE Hedge Asset Management LLC 0.88% of their portfolio | 242.2k $16.2m | Added +123.0k |
| EXCHANGE TRADED CONCEPTS, LLC 0.15% of their portfolio | 241.0k $16.2m | Added +16.2k |
| Swiss National Bank 0.01% of their portfolio | 237.7k $15.9m | Added +3.5k |
| BARCLAYS PLC 0.01% of their portfolio | 230.1k $15.4m | Added +146.6k |
| Cetera Investment Advisers 0.02% of their portfolio | 224.0k $15.0m | Added +106.3k |
| Philadelphia Financial Management of San Francisco, LLC 3.00% of their portfolio | 223.1k $15.0m | Reduced -42.3k |
| California Public Employees Retirement System 0.01% of their portfolio | 220.7k $14.8m | New |
| Goodlander Investment Management, LLC 5.63% of their portfolio | 220.0k $14.8m | New |
| Baird Financial Group, Inc. 0.02% of their portfolio | 216.0k $14.5m | Added +23.1k |
| Clearbridge Investments, LLC 0.01% of their portfolio | 213.4k $14.3m | Reduced -219.9k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.01% of their portfolio | 210.0k $14.1m | New |
| GROUP ONE TRADING LLC 0.41% of their portfolio | 204.8k $13.7m | New |
| NEXT CENTURY GROWTH INVESTORS LLC 0.99% of their portfolio | 203.1k $13.6m | New |
| Woodline Partners LP 0.06% of their portfolio | 200.0k $13.4m | New |
| SEVEN GRAND MANAGERS, LLC 1.09% of their portfolio | 200.0k $13.4m | New |
| Legal & General Group Plc 0.00% of their portfolio | 197.8k $13.3m | Reduced -135.8k |
| Sicart Associates LLC 3.40% of their portfolio | 187.3k $12.6m | Reduced -208.2k |
| FRONTIER CAPITAL MANAGEMENT CO LLC 0.10% of their portfolio | 169.9k $11.4m | Reduced -369.0k |
| Banque Transatlantique SA 0.27% of their portfolio | 162.8k $10.9m | New |
| Retirement Systems of Alabama 0.04% of their portfolio | 162.7k $10.9m | New |
| FEDERATED HERMES, INC. 0.02% of their portfolio | 159.9k $10.7m | Added +102.4k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 155.9k $10.5m | Added +118.4k |
| ExodusPoint Capital Management, LP 0.15% of their portfolio | 154.7k $10.4m | New |
| SG Americas Securities, LLC 0.04% of their portfolio | 153.9k $10.3m | New |
| ALPS ADVISORS INC 0.06% of their portfolio | 150.5k $10.1m | Added +60.0k |
| Burkehill Global Management, LP 0.57% of their portfolio | 150.0k $10.1m | New |
| Bernzott Capital Advisors 4.73% of their portfolio | 149.3k $10.0m | Reduced -160.4k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.02% of their portfolio | 142.8k $9.6m | Added +14.2k |
| OSAIC HOLDINGS, INC. 0.01% of their portfolio | 140.8k $9.9m | Added +51.2k |
| Allianz Asset Management GmbH 0.01% of their portfolio | 136.8k $9.2m | New |
| Revere Asset Management, Inc 3.23% of their portfolio | 127.6k $8.6m | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.01% of their portfolio | 124.8k $8.4m | Added +98.2k |
| Mirae Asset Global Investments Co., Ltd. 0.03% of their portfolio | 122.0k $8.2m | New |
| FLPUTNAM INVESTMENT MANAGEMENT CO 0.12% of their portfolio | 121.3k $8.1m | Added +193 |