Amplitude, Inc. (AMPL) ownership: Top institutional holder: VANGUARD GROUP INC ($125.36M). Insider activity: Net Seller (1 buys, 19 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 10825568.00 | $125.36M | 2025-12-31 |
| WELLINGTON MANAGEMENT GROUP LLP | 11154556.00 | $76.07M | 2026-03-31 |
| BlackRock, Inc. | 10162138.00 | $69.31M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6165091.00 | $42.05M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4091320.00 | $27.90M | 2026-03-31 |
| FMR LLC | 3311284.00 | $22.58M | 2026-03-31 |
| SC US (TTGP), LTD. | 2798951.00 | $19.09M | 2026-03-31 |
| BAILLIE GIFFORD & CO | 2634150.00 | $17.96M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-08-17 | |
| Sell | null | 2026-08-17 | |
| Sell | null | 2026-08-17 | |
| Sell | null | 2026-08-17 | |
| Sell | null | 2026-07-08 | |
| Sell | null | 2026-07-08 | |
| Sell | null | 2026-07-05 | |
| Sell | null | 2026-07-05 |
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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.