Institutional Manager · CIK 0001973324
Polymer Capital Management (US) LLC
NEW YORK, NY · File #028-25018
Latest AUM
$952.8M
Positions
742
Top-10 Concentration
41.2%
Filings
5
Portfolio Value Over Time
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| REDUCE | LUMENTUM HLDGS INC | LITE | -69,540 | -$25.6M | +$24.8M |
| ADD | MICRON TECHNOLOGY INC | MU | +65,405 | +$18.7M | +$239,132 |
| NEW | INVESCO QQQ TR | IVZ | +30,000 | +$18.4M | $0 |
| REDUCE | WESTERN DIGITAL CORP | WDC | -97,932 | -$16.9M | +$5.8M |
| EXITED | FIRST SOLAR INC | 336433107 | -57,658 | -$12.7M | $0 |
| REDUCE | TESLA INC | TSLA | -27,881 | -$12.5M | +$198,001 |
| ADD | ADVANCED MICRO DEVICES INC | AMD | +42,583 | +$9.1M | +$226,658 |
| REDUCE | ALBEMARLE CORP | ALB-PA | -55,000 | -$7.8M | +$4.2M |
| REDUCE | PPL CORP | PPLC | -220,000 | -$7.7M | -$577,800 |
| REDUCE | CENTERPOINT ENERGY INC | CNP | -195,000 | -$7.5M | -$149,500 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 2025742 pos · $952.8M
- 13F HOLDINGS REPORTQ/E Sep 2025747 pos · $944.6M
- 13F HOLDINGS REPORTQ/E Jun 20251,162 pos · $846.5M
- 13F HOLDINGS REPORTQ/E Mar 2025487 pos · $387.8M
- 13F HOLDINGS REPORTQ/E Dec 2024352 pos · $369.9M
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | MICRON TECHNOLOGY INC | MU | 67,430 | $19.2M | 5.34% |
| 2 | NVIDIA CORPORATION | NVDA | 102,073 | $19.0M | 5.29% |
| 3 | LUMENTUM HLDGS INC | LITE | 50,696 | $18.7M | 5.19% |
| 4 | INVESCO QQQ TR | IVZ | 30,000 | $18.4M | 5.12% |
| 5 | VERTIV HOLDINGS CO | VRT | 92,500 | $15.0M | 4.16% |
| 6 | COREWEAVE INC | CRWV | 194,100 | $13.9M | 3.86% |
| 7 | VERTIV HOLDINGS CO | VRT | 77,500 | $12.6M | 3.49% |
| 8 | COREWEAVE INC | CRWV | 162,500 | $11.6M | 3.23% |
| 9 | ADVANCED MICRO DEVICES INC | AMD | 46,911 | $10.0M | 2.79% |
| 10 | VANECK ETF TRUST | 92189F106 | 115,000 | $9.9M | 2.74% |
| 11 | ISHARES TR | 464287655 | 32,500 | $8.0M | 2.22% |
| 12 | MICROCHIP TECHNOLOGY INC. | MCHPP | 124,386 | $7.9M | 2.20% |
| 13 | GE VERNOVA INC | GEV | 12,000 | $7.8M | 2.18% |
| 14 | DTE ENERGY CO | DTK | 58,786 | $7.6M | 2.11% |
| 15 | AMEREN CORP | AEE | 72,225 | $7.2M | 2.00% |
| 16 | FREEPORT-MCMORAN INC | FCX | 140,000 | $7.1M | 1.97% |
| 17 | LINDE PLC | LIN | 15,807 | $6.7M | 1.87% |
| 18 | XCEL ENERGY INC | XELLL | 90,000 | $6.6M | 1.85% |
| 19 | ARK ETF TR | 00214Q104 | 80,000 | $6.2M | 1.71% |
| 20 | INVESCO QQQ TR | IVZ | 10,000 | $6.1M | 1.71% |