CIK: 0001912187
Total reported value
$1.0B
Reporting period: 2026-03-31 · Number of holdings: 20
RDST Capital LLC disclosed 20 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $1.0B and a quarterly turnover rate of 41.0%.
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RDST Capital LLC's disclosed holdings carry a Herfindahl concentration index of 0.056 — mathematically equivalent to about 18 equally-sized positions, close to its 20 actual disclosed holdings. Value is spread relatively evenly across the portfolio rather than concentrated in a handful of names.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.35), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 2.6 percentage-point tilt) — a pattern consistent with a momentum-following approach.
Trim ENTG
-67.7% -$51.3M
Add MRVL
+136.4% $38.4M
Add TSM
+111.4% $34.5M
Trim FND
-42.6% -$29.3M
Trim HUBS
-10.5% -$28.9M
Add DASH
+176.7% $25.2M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | UNP | Union Pacific CORP | Stock-Industrials | 6.82% | -2.34% | -30.58% | |
| 2 | DDOG | Datadog INC - Class A | Stock-Tech | 6.79% | +2.02% | +60.36% | |
| 3 | OWL | Blue Owl Capital INC | Stock-Financials | 6.73% | -2.09% | +22.08% | |
| 4 | CPNG | Coupang INC | Stock-Consumer Disc | 6.63% | +1.84% | +69.28% | |
| 5 | AMZN | Amazon.com INC | Stock-Consumer Disc | 6.52% | -0.26% | +4.29% | |
| 6 | MSFT | Microsoft CORP | Stock-Tech | 6.44% | -0.66% | +15.84% | |
| 7 | JHX | James Hardie Industries plc | Stock-Other | 5.91% | +0.64% | +20.21% | |
| 8 | MRVL | Marvell Technology INC | Stock-Tech | 5.81% | +3.75% | +136.39% | |
| 9 | TSM | Taiwan Semiconductor-sp Adr | Stock-Tech | 5.78% | +3.37% | +111.35% | |
| 10 | META | Meta Platforms Inc-class A | Stock-Comm Services | 5.49% | +1.61% | +59.65% | |
| 11 | MLM | Martin Marietta Materials | Stock-Materials | 5.39% | -0.56% | -6.31% | |
| 12 | DASH | Doordash INC - A | Stock-Consumer Disc | 5.35% | +2.50% | +176.72% | |
| 13 | CVNA | Carvana Co | Stock-Consumer Disc | 5.29% | +0.43% | +42.97% | |
| 14 | MKTX | Marketaxess Holdings INC | Stock-Financials | 4.69% | -0.62% | -4.97% | |
| 15 | ENTG | Entegris INC | Stock-Tech | 4.03% | -4.75% | -67.70% | |
| 16 | ARES | Ares Management CORP - A | Stock-Financials | 3.37% | +3.37% | NEW | |
| 17 | HUBS | Hubspot INC | Stock-Tech | 3.32% | -2.65% | -10.54% | |
| 18 | FND | Floor & Decor Holdings Inc-a | Stock-Consumer Disc | 2.60% | -2.71% | -42.57% | |
| 19 | APO | Apollo Global Management INC | Stock-Financials | 2.26% | -0.19% | +17.20% | |
| 20 | NOW | Servicenow INC | Stock-Tech | 0.77% | +0.77% | NEW |
Performance for Q3 2026
+4.7%
Performance Last 4 Quarters
+25.8%
Based on 49% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 20 | $1.0B | 41 | |
| 2025-12-31 | 19 | $1.1B | 45 | |
| 2025-09-30 | 19 | $1.1B | 64 | |
| 2025-06-30 | 18 | $1.0B | 0 | |
| 2025-03-31 | 16 | $703.4M | 0 | |
| 2024-12-31 | 20 | $705.0M | 0 | |
| 2024-09-30 | 16 | $443.2M | 0 | |
| 2024-06-30 | 17 | $380.1M | 0 | |
| 2024-03-31 | 18 | $402.2M | 0 | |
| 2023-12-31 | 18 | $313.8M | 0 | |
| 2023-09-30 | 16 | $264.7M | 0 | |
| 2023-06-30 | 17 | $228.9M | 0 | |
| 2023-03-31 | 16 | $182.9M | 0 | |
| 2022-12-31 | 17 | $163.7M | 0 | |
| 2022-09-30 | 17 | $134.5M | 0 | |
| 2022-06-30 | 15 | $140.7M | 0 | |
| 2022-03-31 | 16 | $140.6M | 0 | |
| 2021-12-31 | 16 | $146.7M | 0 |
RDST Capital LLC's most significant position changes for 2026-03-31: Sold out: Ducommun INC (DCO); New buy: Ares Management CORP - A (ARES); New buy: Servicenow INC (NOW); Trim: Entegris INC (ENTG) — shares -67.70%; Add: Marvell Technology INC (MRVL) — shares +136.39%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | MRVL | Marvell Technology INC | +3.8% | +136.39% | Add |
| 2 | TSM | Taiwan Semiconductor-sp Adr | +3.4% | +111.35% | Add |
| 3 | DASH | Doordash INC - A | +2.5% | +176.72% | Add |
| 4 | DDOG | Datadog INC - Class A | +2% | +60.36% | Add |
| 5 | CPNG | Coupang INC | +1.8% | +69.28% | Add |
| 6 | META | Meta Platforms Inc-class A | +1.6% | +59.65% | Add |
| 7 | JHX | James Hardie Industries plc | +0.6% | +20.21% | Add |
| 8 | CVNA | Carvana Co | +0.4% | +42.97% | Add |
| 9 | APO | Apollo Global Management INC | -0.2% | +17.20% | Add |
| 10 | AMZN | Amazon.com INC | -0.3% | +4.29% | Add |
| 11 | MLM | Martin Marietta Materials | -0.6% | -6.31% | Trim |
| 12 | MKTX | Marketaxess Holdings INC | -0.6% | -4.97% | Trim |
| 13 | MSFT | Microsoft CORP | -0.7% | +15.84% | Add |
| 14 | OWL | Blue Owl Capital INC | -2.1% | +22.08% | Add |
| 15 | UNP | Union Pacific CORP | -2.3% | -30.58% | Trim |
| 16 | HUBS | Hubspot INC | -2.7% | -10.54% | Trim |
| 17 | FND | Floor & Decor Holdings Inc-a | -2.7% | -42.57% | Trim |
| 18 | ENTG | Entegris INC | -4.8% | -67.70% | Trim |
| 19 | DCO | Ducommun INC | — | EXIT | Sold out |
| 20 | ARES | Ares Management CORP - A | — | NEW | New buy |
| 21 | NOW | Servicenow INC | — | NEW | New buy |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-15 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-17 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-18 | Amendment | View on EDGAR |
| 2025-09-30 | 2025-11-13 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-12 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-15 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-14 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-14 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-14 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-14 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-14 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-14 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-14 | Amendment | View on EDGAR |
| 2023-06-30 | 2023-08-14 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-15 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-14 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-14 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-15 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-13 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-23 | 13F-HR | View on EDGAR |
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