Ambarella, Inc. (AMBA) ownership: Top institutional holder: VANGUARD GROUP INC ($388.22M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 5480285.00 | $388.22M | 2025-12-31 |
| BlackRock, Inc. | 3789215.00 | $195.05M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3716863.00 | $191.33M | 2026-03-31 |
| Jericho Capital Asset Management L.P. | 1587081.00 | $112.43M | 2025-12-31 |
| STATE STREET CORP | 1976464.00 | $101.74M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1814603.00 | $93.41M | 2026-03-31 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 1586082.00 | $81.64M | 2026-03-31 |
| MILLENNIUM MANAGEMENT LLC | 1512539.00 | $77.86M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-05-26 | |
| Sell | null | 2026-05-26 | |
| Sell | null | 2026-05-26 | |
| Sell | null | 2026-05-26 | |
| Sell | null | 2026-05-26 | |
| Sell | null | 2026-05-26 | |
| Sell | null | 2026-05-26 |
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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.