RDST Capital LLC
In its 13F for Q4 2025 (holdings as of December 31, 2025, filed February 17, 2026), RDST Capital LLC reported 19 stock positions worth $1.1 billion. Its top holding was Union Pacific (UNP) at 9.2% of the portfolio, followed by Blue Owl Capital (OWL, 8.8%) and Entegris (ENTG, 8.8%). Compared with Q3 2025, it opened 3 new positions, sold out of 3, added to 12 and reduced 4. The biggest buy was a new position in James Hardie Ind (JHX) and the biggest sale an exit from CSX (CSX).
- Most Recent 13F
- Q2 2026
- Location
- SEATTLE, WA
- CIK
- 0001912187
- Portfolio Value
- $1.1B (Q4 2025)
- SEC Filing
- 0001420506-26-000500 ↗ filed Feb 17, 2026
Holdings Value
Holdings 19 stocks · $1.1B
| UNP Union Pacific Corp. | 9.16% | 420,095 | $97.2M | Add +24.8% |
| OWL Blue Owl Capital Inc. | 8.82% | 6,265,485 | $93.6M | Add +39.5% |
| ENTG Entegris Inc. | 8.78% | 1,105,625 | $93.1M | Add +15.6% |
| MSFT Microsoft Corp. | 7.10% | 155,875 | $75.4M | Add +11.1% |
| AMZN Amazon.com Inc. | 6.78% | 311,605 | $71.9M | Add +10.6% |
| HUBS HubSpot Inc. | 5.97% | 157,785 | $63.3M | Add +29.9% |
| MLM Martin Marietta Materials | 5.95% | 101,500 | $63.2M | Reduce -9.0% |
| FND Floor & Decor Holdings Inc. Class A | 5.31% | 925,247 | $56.3M | Add +22.3% |
| MKTX Marketaxess Holdings Inc. | 5.31% | 310,697 | $56.3M | Add +10.3% |
| JHX James Hardie Ind PLC | 5.27% | 2,693,617 | $55.9M | New |
| CVNA Carvana Co. | 4.86% | 122,262 | $51.6M | Add +14.1% |
| CPNG Coupang Inc. | 4.79% | 2,154,400 | $50.8M | New |
| DDOG Datadog Inc. Class A | 4.77% | 372,350 | $50.6M | Reduce -21.6% |
| META Meta Platforms Inc. Class A | 3.88% | 62,405 | $41.2M | Add +22.5% |
| DCO Ducommun Inc. | 3.50% | 390,363 | $37.1M | Reduce -22.2% |
| DASH DoorDash Inc. Class A | 2.85% | 133,535 | $30.2M | Add +174.9% |
| APO Apollo Global Management Inc. | 2.45% | 179,530 | $26.0M | Add +22.1% |
| TSM Taiwan Semiconductor-SP ADR | 2.41% | 84,040 | $25.5M | New |
| MRVL Marvell Technology Inc. | 2.06% | 257,535 | $21.9M | Reduce -68.8% |
Portfolio Sells Q3 2025 → Q4 2025
| CSX CSX Corp. | Sold out | 0.00% | −5.08 |
| AMAT Applied Materials Inc. | Sold out | 0.00% | −5.03 |
| WDAY Workday Inc. Class A | Sold out | 0.00% | −4.52 |
| MRVL Marvell Technology Inc. | Reduce -68.8% | 2.06% | −4.47 |
| DDOG Datadog Inc. Class A | Reduce -21.6% | 4.77% | −1.60 |
| DCO Ducommun Inc. | Reduce -22.2% | 3.50% | −1.04 |
| MLM Martin Marietta Materials | Reduce -9.0% | 5.95% | −0.67 |
Portfolio Buys Q3 2025 → Q4 2025
| JHX James Hardie Ind PLC | New | 5.27% | +5.27 |
| CPNG Coupang Inc. | New | 4.79% | +4.79 |
| TSM Taiwan Semiconductor-SP ADR | New | 2.41% | +2.41 |
| UNP Union Pacific Corp. | Add +24.8% | 9.16% | +1.66 |
| OWL Blue Owl Capital Inc. | Add +39.5% | 8.82% | +1.66 |
| DASH DoorDash Inc. Class A | Add +174.9% | 2.85% | +1.61 |
| CVNA Carvana Co. | Add +14.1% | 4.86% | +1.05 |
| AMZN Amazon.com Inc. | Add +10.6% | 6.78% | +0.95 |
| MKTX Marketaxess Holdings Inc. | Add +10.3% | 5.31% | +0.69 |
| HUBS HubSpot Inc. | Add +29.9% | 5.97% | +0.61 |
| APO Apollo Global Management Inc. | Add +22.1% | 2.45% | +0.60 |
| ENTG Entegris Inc. | Add +15.6% | 8.78% | +0.45 |
| META Meta Platforms Inc. Class A | Add +22.5% | 3.88% | +0.36 |
| MSFT Microsoft Corp. | Add +11.1% | 7.10% | +0.26 |
| FND Floor & Decor Holdings Inc. Class A | Add +22.3% | 5.31% | +0.06 |
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 |