Polymer Capital Management (US) LLC
Position in MP — MP Materials Corp. / DE
CIK 1973324
NEW YORK, NY
Position in MP
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$345,973
+$261,150 QoQ
Shares Held
6,177
+267.9% QoQ
Ownership
0.003%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
#440
of 750 holders
Holding Since
Jun 2025
4 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in MP Over Time
Shares Held
Position Value (USD)
Derivatives in MP
reported options exposure · as of Dec 31, 2025CallValue
$1,010,400
CallShares
20,000
PutValue
$0
PutShares
0
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Other Industrial Metals & Mining
Basic Materials · as of Jun 30, 2026Polymer Capital Management (US) LLC holds $506,554 across 3 Other Industrial Metals & Mining names. MP ranks #1 (68.3% of the industry book) .
All Filings in MP
Export CSV
9 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $345,973 | 6,177 | Shares | Sole | 2026-08-14 | |
| 2025-12-31 | $1,010,400 | 20,000 | Call | Sole | 2026-02-17 | |
| 2025-12-31 | $84,823 | 1,679 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $670,700 | 10,000 | Call | Sole | 2025-11-14 | |
| 2025-09-30 | $3,676,240 | 54,812 | Shares | Sole | 2025-11-14 | |
| 2025-09-30 | $3,219,360 | 48,000 | Put | Sole | 2025-11-14 | |
| 2025-06-30 | $8,151,150 | 245,000 | Put | Sole | 2025-08-14 | |
| 2025-06-30 | $3,327,000 | 100,000 | Shares | Sole | 2025-08-14 | |
| 2025-06-30 | $831,750 | 25,000 | Call | Sole | 2025-08-14 | |
| No filing history on record for this holder in this stock. | ||||||