RDST Capital LLC — 13F Holdings & Portfolio
CIK 1912187 · latest 13F-HR filed 2026-05-15
RDST Capital LLC manages $1.04B in 13F-reported U.S. long-equity assets across 20 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are UNP (6.82%), DDOG (6.79%), OWL (6.73%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 2 new positions, exited 1, added to 8, and trimmed 10.
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.
$1.04B
Long-equity book
20
Distinct positions
2026-03-31
Filed 2026-05-15
+2 / −1 / ↑8 / ↓10
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- MARVELL TECHNOLOGY INC$38.4M +175.5%
- TAIWAN SEMICONDUCTOR MANUFAC$34.5M +135.0%
- DOORDASH INC$25.2M +83.5%
- DATADOG INC$19.9M +39.2%
- COUPANG INC$18.0M +35.5%
Top Trims
- ENTEGRIS INC-$51.3M -55.1%
- FLOOR & DECOR HLDGS INC-$29.3M -52.1%
- HUBSPOT INC-$28.9M -45.6%
- UNION PAC CORP-$26.4M -27.2%
- BLUE OWL CAPITAL INC-$23.8M -25.4%
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 | UNION PAC CORP | UNP | 907818108 | $70.8M | 6.82% | 291,615 | SH |
| 2 | DATADOG INC | DDOG | 23804L103 | $70.5M | 6.79% | 597,085 | SH |
| 3 | BLUE OWL CAPITAL INC | OWL | 09581B103 | $69.8M | 6.73% | 7,648,935 | SH |
| 4 | COUPANG INC | CPNG | 22266T109 | $68.9M | 6.63% | 3,646,900 | SH |
| 5 | AMAZON COM INC | AMZN | 023135106 | $67.7M | 6.52% | 324,980 | SH |
| 6 | MICROSOFT CORP | MSFT | 594918104 | $66.8M | 6.44% | 180,560 | SH |
| 7 | JAMES HARDIE INDS PLC | JHX | G4253H101 | $61.3M | 5.91% | 3,238,117 | SH |
| 8 | MARVELL TECHNOLOGY INC | MRVL | 573874104 | $60.3M | 5.81% | 608,780 | SH |
| 9 | TAIWAN SEMICONDUCTOR MANUFAC | TSM | 874039100 | $60.0M | 5.78% | 177,619 | SH |
| 10 | META PLATFORMS INC | META | 30303M102 | $57.0M | 5.49% | 99,630 | SH |
| 11 | MARTIN MARIETTA MATLS INC | MLM | 573284106 | $56.0M | 5.39% | 95,095 | SH |
| 12 | DOORDASH INC | DASH | 25809K105 | $55.5M | 5.35% | 369,520 | SH |
| 13 | CARVANA CO | CVNA | 146869102 | $55.0M | 5.29% | 174,802 | SH |
| 14 | MARKETAXESS HLDGS INC | MKTX | 57060D108 | $48.7M | 4.69% | 295,267 | SH |
| 15 | ENTEGRIS INC | ENTG | 29362U104 | $41.9M | 4.03% | 357,125 | SH |
| 16 | ARES MANAGEMENT CORPORATION | ARES | 03990B101 | $35.0M | 3.37% | 321,000 | SH |
| 17 | HUBSPOT INC | HUBS | 443573100 | $34.5M | 3.32% | 141,150 | SH |
| 18 | FLOOR & DECOR HLDGS INC | FND | 339750101 | $27.0M | 2.60% | 531,328 | SH |
| 19 | APOLLO GLOBAL MGMT INC | APO | 03769M106 | $23.4M | 2.26% | 210,405 | SH |
| 20 | SERVICENOW INC | NOW | 81762P102 | $8.0M | 0.77% | 76,560 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-15 | $1.04B | 20 | 0001912187-26-000005 |
| 2025-12-31 | 2026-02-17 | $1.06B | 19 | 0001420506-26-000500 |
| 2025-09-30 | 2025-11-18 | $1.06B | 19 | 0001420506-25-003460 |