Ambarella Inc (AMBA)
Who owns Ambarella Inc (AMBA)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 95.3% of the shares are freely tradable; institutional investors hold 87.1%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Group Inc | 12.49 | 5,480,285 | +6.0 | 12/31/2025 |
| BlackRock Inc | 8.64 | 3,789,215 | -1.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 8.47 | 3,716,863 | +0.0 | 03/31/2026 |
| State Street Corp | 4.51 | 1,976,464 | +16.1 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.14 | 1,814,603 | +0.0 | 03/31/2026 |
| Manufacturers Life Insurance Co | 3.62 | 1,586,082 | +49.5 | 03/31/2026 |
| Millennium Management LLC | 3.45 | 1,512,539 | +790.5 | 03/31/2026 |
| Geode Capital Management, LLC | 2.35 | 1,029,229 | +0.9 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 2.96 | 1,300,151 | +1.2 | 04/30/2026 |
| Vanguard Information Technology ETF | 2.27 | 996,558 | +0.5 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 21. Apr 2026 | John Alexander Young | CFO | Sell | 1,971 | 60.00 | 118,260 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.