THAMES CAPITAL MANAGEMENT LLC — 13F Holdings & Portfolio
CIK 1714267 · latest 13F-HR filed 2026-05-12
THAMES CAPITAL MANAGEMENT LLC manages $557.9M in 13F-reported U.S. long-equity assets across 43 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are GEV (7.88%), VRT (7.42%), TSM (4.65%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 13 new positions, exited 18, added to 11, and trimmed 18.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
$557.9M
Long-equity book
43
Distinct positions
2026-03-31
Filed 2026-05-12
+13 / −18 / ↑11 / ↓18
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- VERTIV HOLDINGS CO$12.4M +42.8%
- SANDISK CORP$9.0M +167.6%
- GE VERNOVA INC$8.4M +23.6%
- COMFORT SYS USA INC$5.3M +61.1%
- AMPRIUS TECHNOLOGIES INC$4.7M +113.7%
Top Trims
- STATE STR CORP-$16.6M -49.0%
- NVIDIA CORPORATION-$11.2M -35.6%
- SPOTIFY TECHNOLOGY S A-$9.0M -55.6%
- META PLATFORMS INC-$8.1M -36.4%
- ROCKET COS INC-$4.9M -26.9%
New Positions
- FABRINET$18.0M
- MKS INC.$15.6M
- DIGITALOCEAN HLDGS INC$12.5M
- ADVANCED ENERGY INDS$12.3M
- DIREXION SHARES ETF TRUST$10.9M
Exited Positions
- AMERICAN EXPRESS CO$29.8M
- MICROSOFT CORP$21.9M
- UNITED RENTALS INC$21.8M
- CITIGROUP INC$17.8M
- EVERCORE INC$16.0M
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | GE VERNOVA INC | GEV | 36828A101 | $44.0M | 7.88% | 50,384 | SH |
| 2 | VERTIV HOLDINGS CO | VRT | 92537N108 | $41.4M | 7.42% | 165,191 | SH |
| 3 | TAIWAN SEMICONDUCTOR MANUFAC | TSM | 874039100 | $26.0M | 4.65% | 76,789 | SH |
| 4 | NVIDIA CORPORATION | NVDA | 67066G104 | $20.3M | 3.63% | 116,169 | SH |
| 5 | HUT 8 CORP | HUT | 44812J104 | $20.0M | 3.58% | 425,337 | SH |
| 6 | ARGAN INC | AGX | 04010E109 | $19.9M | 3.56% | 36,458 | SH |
| 7 | AMPHENOL CORP | APH | 032095101 | $18.4M | 3.30% | 145,675 | SH |
| 8 | FABRINET | FN | G3323L100 | $18.0M | 3.23% | 34,597 | SH |
| 9 | GE AEROSPACE | GE | 369604301 | $17.6M | 3.16% | 62,061 | SH |
| 10 | MASTERCARD INCORPORATED | MA | 57636Q104 | $17.3M | 3.10% | 34,663 | SH |
| 11 | STATE STR CORP | STT | 857477103 | $17.3M | 3.09% | 136,343 | SH |
| 12 | MICRON TECHNOLOGY INC | MU | 595112103 | $17.0M | 3.04% | 50,227 | SH |
| 13 | APPLE INC | AAPL | 037833100 | $15.7M | 2.81% | 61,806 | SH |
| 14 | MKS INC. | MKSI | 55306N104 | $15.6M | 2.79% | 67,668 | SH |
| 15 | ONDAS INC | ONDS | 68236H204 | $14.6M | 2.62% | 1,614,315 | SH |
| 16 | SANDISK CORP | SNDK | 80004C200 | $14.4M | 2.58% | 22,636 | SH |
| 17 | PRIMORIS SVCS CORP | PRIM | 74164F103 | $14.3M | 2.56% | 100,005 | SH |
| 18 | META PLATFORMS INC | META | 30303M102 | $14.2M | 2.54% | 24,794 | SH |
| 19 | COMFORT SYS USA INC | FIX | 199908104 | $13.9M | 2.50% | 10,109 | SH |
| 20 | VISA INC | V | 92826C839 | $13.8M | 2.47% | 45,662 | SH |
| 21 | ROCKET COS INC | RKT | 77311W101 | $13.3M | 2.38% | 932,268 | SH |
| 22 | COHERENT CORP | COHR | 19247G107 | $13.0M | 2.33% | 54,581 | SH |
| 23 | DIGITALOCEAN HLDGS INC | DOCN | 25402D102 | $12.5M | 2.24% | 145,984 | SH |
| 24 | ADVANCED ENERGY INDS | AEIS | 007973100 | $12.3M | 2.21% | 38,267 | SH |
| 25 | TERAWULF INC | WULF | 88080T104 | $11.3M | 2.03% | 785,938 | SH |
| 26 | DIREXION SHARES ETF TRUST | SOXL | 25459W458 | $10.9M | 1.96% | 227,953 | SH |
| 27 | BROOKDALE SR LIVING INC | BKD | 112463104 | $10.4M | 1.86% | 757,710 | SH |
| 28 | AMPRIUS TECHNOLOGIES INC | AMPX | 03214Q108 | $8.9M | 1.59% | 526,832 | SH |
| 29 | LUMENTUM HLDGS INC | LITE | 55024U109 | $8.6M | 1.55% | 12,267 | SH |
| 30 | SPOTIFY TECHNOLOGY S A | SPOT | L8681T102 | $7.2M | 1.29% | 14,828 | SH |
| 31 | THERMO FISHER SCIENTIFIC INC | TMO | 883556102 | $6.5M | 1.16% | 13,202 | SH |
| 32 | STERLING INFRASTRUCTURE INC | STRL | 859241101 | $6.4M | 1.14% | 15,662 | SH |
| 33 | APPLIED OPTOELECTRONICS INC | AAOI | 03823U102 | $6.3M | 1.13% | 74,334 | SH |
| 34 | CELESTICA INC | CLS | 15101Q207 | $5.5M | 0.99% | 19,655 | SH |
| 35 | SILICON MOTION TECHNOLOGY CO | SIMO | 82706C108 | $5.2M | 0.93% | 46,344 | SH |
| 36 | ARTERIS INC | AIP | 04302A104 | $4.8M | 0.87% | 293,973 | SH |
| 37 | IREN LIMITED | IREN | Q4982L109 | $4.7M | 0.85% | 138,364 | SH |
| 38 | MACOM TECH SOLUTIONS HLDGS I | MTSI | 55405Y100 | $4.0M | 0.71% | 17,960 | SH |
| 39 | UBER TECHNOLOGIES INC | UBER | 90353T100 | $3.9M | 0.69% | 53,601 | SH |
| 40 | IDAHO STRATEGIC RESOURCES | IDR | 645827205 | $3.0M | 0.53% | 91,929 | SH |
| 41 | QUANTUMSCAPE CORP | QS | 74767V109 | $2.4M | 0.42% | 369,686 | SH |
| 42 | JABIL INC | JBL | 466313103 | $2.4M | 0.42% | 8,872 | SH |
| 43 | TETRA TECHNOLOGIES INC DEL | TTI | 88162F105 | $990.0K | 0.18% | 116,196 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-12 | $557.9M | 43 | 0001714267-26-000002 |
| 2025-12-31 | 2026-02-10 | $687.8M | 48 | 0001714267-26-000001 |
| 2025-09-30 | 2025-10-28 | $700.8M | 58 | 0001714267-25-000009 |
| 2022-03-31 | 2022-05-11 | $474.1K | 44 | 0001714267-22-000005 |