Riot Platforms, Inc. (RIOT) ownership: Top institutional holder: VANGUARD GROUP INC ($505.66M). Insider activity: Net Seller (0 buys, 3 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 39910169.00 | $505.66M | 2025-12-31 |
| BlackRock, Inc. | 29652705.00 | $366.51M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 21685659.00 | $268.03M | 2026-03-31 |
| Starboard Value LP | 15544576.00 | $192.13M | 2026-03-31 |
| FMR LLC | 15014625.00 | $185.58M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 14865081.00 | $183.73M | 2026-03-31 |
| VIKING GLOBAL INVESTORS LP | 12428894.00 | $157.47M | 2025-12-31 |
| Situational Awareness LP | 11502137.00 | $142.17M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-27 | |
| Sell | null | 2026-05-11 | |
| Sell | null | 2026-04-12 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.