Institutional Manager · CIK 0001912187
RDST Capital LLC
SEATTLE, WA · File #028-22317
Latest AUM
$1.06B
Positions
19
Top-10 Concentration
68.4%
Filings
10
Portfolio Value Over Time
2024-03
2024-06
2024-09
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 |
|---|---|---|---|---|---|
| NEW | JAMES HARDIE INDS PLC | G4253H101 | +2,693,617 | +$55.9M | $0 |
| EXITED | CSX CORP | 126408103 | -1,517,825 | -$53.9M | $0 |
| EXITED | APPLIED MATLS INC | 038222105 | -261,147 | -$53.5M | $0 |
| NEW | COUPANG INC | CPNG | +2,154,400 | +$50.8M | $0 |
| REDUCE | MARVELL TECHNOLOGY INC | MRVL | -567,950 | -$48.3M | +$751,190 |
| EXITED | WORKDAY INC | 98138H101 | -199,545 | -$48.0M | $0 |
| ADD | BLUE OWL CAPITAL INC | OWL | +1,774,670 | +$26.5M | -$8.9M |
| NEW | APOLLO GLOBAL MGMT INC | 03769M106 | +179,530 | +$26.0M | $0 |
| NEW | TAIWAN SEMICONDUCTOR MFG LTD | 874039100 | +84,040 | +$25.5M | $0 |
| EXITED | APOLLO GLOBAL MGMT INC | 03762U105 | -147,055 | -$19.6M | $0 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 202519 pos · $1.06B
- 13F HOLDINGS REPORT (Amended)Q/E Sep 202519 pos · $1.06B
- 13F HOLDINGS REPORTQ/E Sep 202519 pos · $1.06B
- 13F HOLDINGS REPORTQ/E Jun 202518 pos · $1.00B
- 13F HOLDINGS REPORTQ/E Mar 202516 pos · $703.4M
- 13F HOLDINGS REPORTQ/E Dec 202420 pos · $705.0M
- 13F HOLDINGS REPORTQ/E Sep 202416 pos · $443.2M
- 13F HOLDINGS REPORTQ/E Jun 202417 pos · $380.1M
- 13F HOLDINGS REPORTQ/E Mar 202418 pos · $402.2M
- 13F HOLDINGS REPORTQ/E Dec 202316 pos · $264.7M
Top 19 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | UNION PAC CORP | UNP | 420,095 | $97.2M | 9.16% |
| 2 | BLUE OWL CAPITAL INC | OWL | 6,265,485 | $93.6M | 8.82% |
| 3 | ENTEGRIS INC | ENTG | 1,105,625 | $93.1M | 8.78% |
| 4 | MICROSOFT CORP | MSFT | 155,875 | $75.4M | 7.10% |
| 5 | AMAZON COM INC | AMZN | 311,605 | $71.9M | 6.78% |
| 6 | HUBSPOT INC | HUBS | 157,785 | $63.3M | 5.97% |
| 7 | MARTIN MARIETTA MATLS INC | 573284106 | 101,500 | $63.2M | 5.95% |
| 8 | FLOOR & DECOR HLDGS INC | FND | 925,247 | $56.3M | 5.31% |
| 9 | MARKETAXESS HLDGS INC | MKTX | 310,697 | $56.3M | 5.31% |
| 10 | JAMES HARDIE INDS PLC | G4253H101 | 2,693,617 | $55.9M | 5.27% |
| 11 | CARVANA CO | CVNA | 122,262 | $51.6M | 4.86% |
| 12 | COUPANG INC | CPNG | 2,154,400 | $50.8M | 4.79% |
| 13 | DATADOG INC | DDOG | 372,350 | $50.6M | 4.77% |
| 14 | META PLATFORMS INC | META | 62,405 | $41.2M | 3.88% |
| 15 | DUCOMMUN INC DEL | DCO | 390,363 | $37.1M | 3.50% |
| 16 | DOORDASH INC | DASH | 133,535 | $30.2M | 2.85% |
| 17 | APOLLO GLOBAL MGMT INC | 03769M106 | 179,530 | $26.0M | 2.45% |
| 18 | TAIWAN SEMICONDUCTOR MFG LTD | 874039100 | 84,040 | $25.5M | 2.41% |
| 19 | MARVELL TECHNOLOGY INC | MRVL | 257,535 | $21.9M | 2.06% |