RDST Capital LLC
In its 13F for Q1 2026 (holdings as of March 31, 2026, filed May 15, 2026), RDST Capital LLC reported 20 stock positions worth $1.0 billion. Its top holding was Union Pacific (UNP) at 6.8% of the portfolio, followed by Datadog Class A (DDOG, 6.8%) and Blue Owl Capital (OWL, 6.7%). Compared with Q4 2025, it opened 2 new positions, sold out of 1, added to 12 and reduced 6. The biggest buy was Marvell Technology (MRVL, shares +136%) and the biggest sale Entegris (ENTG, shares −68%).
- Most Recent 13F
- Q2 2026
- Location
- SEATTLE, WA
- CIK
- 0001912187
- Portfolio Value
- $1.0B (Q1 2026)
- SEC Filing
- 0001912187-26-000005 ↗ filed May 15, 2026
Holdings Value
Holdings 20 stocks · $1.0B
| UNP Union Pacific Corp. | 6.82% | 291,615 | $70.8M | Reduce -30.6% |
| DDOG Datadog Inc. Class A | 6.79% | 597,085 | $70.5M | Add +60.4% |
| OWL Blue Owl Capital Inc. | 6.73% | 7,648,935 | $69.8M | Add +22.1% |
| CPNG Coupang Inc. | 6.63% | 3,646,900 | $68.9M | Add +69.3% |
| AMZN Amazon.com Inc. | 6.52% | 324,980 | $67.7M | Add +4.3% |
| MSFT Microsoft Corp. | 6.44% | 180,560 | $66.8M | Add +15.8% |
| JHX James Hardie Ind PLC | 5.91% | 3,238,117 | $61.3M | Add +20.2% |
| MRVL Marvell Technology Inc. | 5.81% | 608,780 | $60.3M | Add +136.4% |
| TSM Taiwan Semiconductor-SP ADR | 5.78% | 177,619 | $60.0M | Add +111.3% |
| META Meta Platforms Inc. Class A | 5.49% | 99,630 | $57.0M | Add +59.6% |
| MLM Martin Marietta Materials | 5.39% | 95,095 | $56.0M | Reduce -6.3% |
| DASH DoorDash Inc. Class A | 5.35% | 369,520 | $55.5M | Add +176.7% |
| CVNA Carvana Co. | 5.29% | 174,802 | $55.0M | Add +43.0% |
| MKTX Marketaxess Holdings Inc. | 4.69% | 295,267 | $48.7M | Reduce -5.0% |
| ENTG Entegris Inc. | 4.03% | 357,125 | $41.9M | Reduce -67.7% |
| ARES Ares Management Corp. Class A | 3.37% | 321,000 | $35.0M | New |
| HUBS HubSpot Inc. | 3.32% | 141,150 | $34.5M | Reduce -10.5% |
| FND Floor & Decor Holdings Inc. Class A | 2.60% | 531,328 | $27.0M | Reduce -42.6% |
| APO Apollo Global Management Inc. | 2.26% | 210,405 | $23.4M | Add +17.2% |
| NOW ServiceNow Inc. | 0.77% | 76,560 | $8.0M | New |
Portfolio Sells Q4 2025 → Q1 2026
| ENTG Entegris Inc. | Reduce -67.7% | 4.03% | −4.74 |
| DCO Ducommun Inc. | Sold out | 0.00% | −3.50 |
| FND Floor & Decor Holdings Inc. Class A | Reduce -42.6% | 2.60% | −2.71 |
| HUBS HubSpot Inc. | Reduce -10.5% | 3.32% | −2.65 |
| UNP Union Pacific Corp. | Reduce -30.6% | 6.82% | −2.34 |
| MKTX Marketaxess Holdings Inc. | Reduce -5.0% | 4.69% | −0.61 |
| MLM Martin Marietta Materials | Reduce -6.3% | 5.39% | −0.56 |
Portfolio Buys Q4 2025 → Q1 2026
| MRVL Marvell Technology Inc. | Add +136.4% | 5.81% | +3.75 |
| TSM Taiwan Semiconductor-SP ADR | Add +111.3% | 5.78% | +3.38 |
| ARES Ares Management Corp. Class A | New | 3.37% | +3.37 |
| DASH DoorDash Inc. Class A | Add +176.7% | 5.35% | +2.50 |
| DDOG Datadog Inc. Class A | Add +60.4% | 6.79% | +2.02 |
| CPNG Coupang Inc. | Add +69.3% | 6.63% | +1.84 |
| META Meta Platforms Inc. Class A | Add +59.6% | 5.49% | +1.61 |
| NOW ServiceNow Inc. | New | 0.77% | +0.77 |
| JHX James Hardie Ind PLC | Add +20.2% | 5.91% | +0.64 |
| CVNA Carvana Co. | Add +43.0% | 5.29% | +0.43 |
| APO Apollo Global Management Inc. | Add +17.2% | 2.26% | −0.19 |
| AMZN Amazon.com Inc. | Add +4.3% | 6.52% | −0.26 |
| MSFT Microsoft Corp. | Add +15.8% | 6.44% | −0.66 |
| OWL Blue Owl Capital Inc. | Add +22.1% | 6.73% | −2.09 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 18 | $1.2B | JHX, TSM, MLM, UNP, ARES |
| Q1 2026 | 20 | $1.0B | UNP, DDOG, OWL, CPNG, AMZN |
| Q4 2025 | 19 | $1.1B | UNP, OWL, ENTG, MSFT, AMZN |
| Q3 2025Amended | 19 | $1.1B | ENTG, UNP, OWL, MSFT, MLM |
| Q2 2025 | 18 | $1.0B | CSX, ENTG, MSFT, AMAT, AMZN |
| Q1 2025 | 16 | $703.4M | QSR, MSFT, ENTG, CSX, WDAY |
| Q4 2024 | 20 | $705.0M | MSFT, CSX, ENTG, QSR, WDAY |
| Q3 2024 | 16 | $443.2M | QSR, MSFT, OWL, APO, DCO |
| Q2 2024 | 17 | $380.1M | COLD, QSR, MSFT, AJG, APO |
| Q1 2024 | 18 | $402.2M | QSR, MSFT, COLD, APO, AJG |