Oklo Inc. (OKLO) ownership: Top institutional holder: VANGUARD GROUP INC ($835.11M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 11637504.00 | $835.11M | 2025-12-31 |
| BlackRock, Inc. | 15907512.00 | $788.85M | 2026-03-31 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 8856496.00 | $439.19M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6237918.00 | $309.34M | 2026-03-31 |
| VAN ECK ASSOCIATES CORP | 6081517.00 | $301.58M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 5830933.00 | $289.16M | 2026-03-31 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 5095800.00 | $252.70M | 2026-03-31 |
| JANE STREET GROUP, LLC | 4911100.00 | $243.54M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-08-13 | |
| Sell | null | 2026-08-13 | |
| Sell | null | 2026-08-13 | |
| Sell | null | 2026-08-13 | |
| Sell | null | 2026-08-12 | |
| Sell | null | 2026-08-12 | |
| Sell | null | 2026-08-03 | |
| Sell | null | 2026-08-03 |
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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.