Amplitude
AMPL
14.76
-0.03
-0.20%
Amplitude
US · AMPL
#2858 by market cap
Listed 2021
14.76
-0.03
-0.20%
Live - 5344 symbols - heartbeat 285s ago
· 2026-10-08 08:15
Pre-market
14.77
+0.07%
After-hours
14.59
-1.16%
Overnight
14.80
+0.27%
- Market cap
- 1.84B
- P/E (TTM)i
- -19.68
- P/Bi
- 13.54
- EPSi
- -0.67
- Div yieldi
- 0.00%
- 52W posi
- 95%
Reader sentiment
Are you bullish or bearish on AMPL?
Anonymous reader poll. Unscientific, not investment advice.
✦ Quant Ownership Signal how this is computed
Distributing
- The number of reporting institutions decreased by 1 in the most recent period (2026/Q3).
- Total institutional ownership fell 1.4 percentage points.
Institutional ownership
- Held by institutions
- 75.83% -1.42pp
- Institutions
- 246 -1
- As of
- 2026/Q3 vs. prior period
Ownership vs. money flow
AlignedInstitutions trimmed shares last reporting period, and the stock has seen net outflows in main-fund flow over the last 20 trading sessions - the two line up.
Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.
Holder types
Mutual Fund49.55%
Individual/Insider13.66%
Hedge Fund11.75%
VC/PE Fund8.20%
Sovereign Wealth Fund3.99%
Public Company1.39%
Government Pension Fund0.47%
Private Company0.34%
Other10.58%
Top holders as of 2026-06-30
Wellington Management Group
8.87% · 11.09M sh
Sequoia Capital Operations
8.18% · 10.22M sh
BlackRock
8.04% · 10.04M sh
Curtis Liu
6.05% · 7.56M sh
Vanguard Portfolio Management, LLC
4.87% · 6.08M sh
FMR
4.77% · 5.95M sh
Spenser Skates
4.68% · 5.85M sh
GIC Private Limited
3.98% · 4.98M sh
Vanguard Capital Management, LLC
3.70% · 4.62M sh
State Street Global Advisors
2.09% · 2.60M sh
Bar length is relative to the largest holder shown here, not to 100% of the company.
Insiders
50 filings tracked · 16 buys · 32 sells
| Name | Role | Stake |
|---|---|---|
| Curtis Liu | Founder, CTO & Director | 6.05% |
| Spenser Skates | Co-Founder, CEO & Chairperson | 4.68% |
| Thomas Hansen | President | 0.71% |
| Andrew Casey | Chief Financial Officer | 0.44% |
| Nathaniel Crook | Chief Revenue Officer | 0.31% |
| Ronald Gill | Independent Director | 0.28% |
| Patrick Grady | Independent Director | 0.17% |
| James Whitehurst | Lead Independent Director | 0.12% |
| Erica Schultz | Independent Director | 0.09% |
| Catherine Wong | Independent Director | 0.09% |
Insider transactions most recent Form 4 filings
| Date | Name | Role | Type | Shares | Price |
|---|---|---|---|---|---|
| 2026-10-01 | Spenser Skates | Co-Founder, CEO & Chairperson | Intent to Sell (Form 144) | -70,087 | $14.52 |
| 2026-09-30 | Spenser Skates | Co-Founder, CEO & Chairperson | Derivative Exercise and Sale | -4,913 | $14.45–14.45 |
| 2026-09-30 | Spenser Skates | Co-Founder, CEO & Chairperson | Intent to Sell (Form 144) | -3,539 | $14.45 |
| 2026-09-29 | Spenser Skates | Co-Founder, CEO & Chairperson | Intent to Sell (Form 144) | -1,374 | $14.45 |
| 2026-09-09 | Spenser Skates | Co-Founder, CEO & Chairperson | Derivative Exercise and Sale | -185,000 | $12.30 |
| 2026-09-03 | Nathaniel Crook | Chief Revenue Officer | Automatic Disposition | -300,000 | $12.99 |
| 2026-08-16 | Spenser Skates | Co-Founder, CEO & Chairperson | Sale to Issuer | -52,369 | $13.03 |
| 2026-08-16 | Curtis Liu | Founder, CTO & Director | Sale to Issuer | -53,878 | $13.03 |
| 2026-08-16 | Andrew Casey | Chief Financial Officer | Sale to Issuer | -72,814 | $13.03 |
| 2026-08-16 | Nathaniel Crook | Chief Revenue Officer | Sale to Issuer | -109,368 | $13.03 |
| 2026-07-07 | Curtis Liu | Founder, CTO & Director | Other Acquisition | +175,000 | -- |
| 2026-07-07 | Curtis Liu | Founder, CTO & Director | Other Disposition | -175,000 | -- |
| 2026-07-04 | Tien Tzuo | Director | Other Acquisition | +1,521 | -- |
| 2026-07-04 | Erica Schultz | Independent Director | Other Acquisition | +1,659 | -- |
| 2026-06-11 | Catherine Wong | Independent Director | Automatic Disposition | -7,453 | $6.79 |
| 2026-06-08 | James Whitehurst | Lead Independent Director | Other Acquisition | +24,857 | -- |
| 2026-06-08 | Patrick Grady | Independent Director | Other Acquisition | +24,857 | -- |
| 2026-06-08 | Ronald Gill | Independent Director | Other Acquisition | +24,857 | -- |
| 2026-06-08 | Erica Schultz | Independent Director | Other Acquisition | +24,857 | -- |
| 2026-06-08 | Catherine Wong | Independent Director | Other Acquisition | +24,857 | -- |
Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.
Quote time 2026-10-08 08:15:22 · For reference only, not investment advice and not tailored to your situation.