Stocks › AMPL
Amplitude, Inc.
AMPL·Nasdaq·
United States·USD
United States·USD$14.76
-0.03 (-0.20%)
Close · Oct 7, 2026 · Close Prices from Tiingo.com
AMPL
Amplitude, Inc. · Nasdaq
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
AMPLS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of AMPL by members of U.S. Congress · 0 on record
No congressional trades in AMPL on record.
Whale Activity
Position changes in AMPL reported for 2026-06-30 by 10 tracked institutional filers
- Increased1
- New1
- Held0
- Decreased6
- Closed1
- No prior filing1
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 10.0M | $76.8M | decreased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6.1M | $46.5M | decreased |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.9M | $30.1M | decreased |
| Trigran Investments, Inc. | 2.3M | $17.8M | — |
| Point72 Asset Management, L.P. | 1.4M | $10.8M | decreased |
| CITADEL ADVISORS LLC | 872.9K | $6.7M | increased |
| TWO SIGMA INVESTMENTS, LP | 416.2K | $3.2M | decreased |
| MILLENNIUM MANAGEMENT LLC | 383.8K | $2.9M | decreased |
| D. E. Shaw & Co., Inc. | 11.9K | $91K | new |
| Renaissance Technologies | 0 | $0 | closed |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by AMPL insiders, by quarter · Form 4
Recent Insider Transactions
1,870 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| Skates SpenserCEO and President · Director | Sale | −70.1K | $14.52 | $1.0M | Oct 2, 2026 | Form 4 ↗ |
| Skates SpenserCEO and President · Director | Sale | −3,539 | $14.45 | $51K | Oct 1, 2026 | Form 4 ↗ |
| Skates SpenserCEO and President · Director | Sale | −1,374 | $14.45 | $20K | Sep 30, 2026 | Form 4 ↗ |
| Skates SpenserCEO and President · Director | Sale | −185.0K | $12.30 | $2.3M | Sep 10, 2026 | Form 4 ↗ |
| Crook Nathaniel GlennChief Commercial Officer | Sale | −300.0K | $12.99 | $3.9M | Sep 4, 2026 | Form 4 ↗ |
| Wong CatherineDirector | Sale | −7,453 | $6.79 | $51K | Jun 12, 2026 | Form 4 ↗ |
| Wong CatherineDirector | Grant / award | +24.9K | $0.00 | $0 | Jun 9, 2026 | Form 4 ↗ |
| Grady Patrick WDirector · 10% owner | Grant / award | +24.9K | $0.00 | $0 | Jun 9, 2026 | Form 4 ↗ |
| Schultz EricaDirector | Grant / award | +24.9K | $0.00 | $0 | Jun 9, 2026 | Form 4 ↗ |
| Gill Ronald SDirector | Grant / award | +24.9K | $0.00 | $0 | Jun 9, 2026 | Form 4 ↗ |
| Whitehurst James MDirector | Grant / award | +24.9K | $0.00 | $0 | Jun 9, 2026 | Form 4 ↗ |
| Liu CurtisChief Technology Officer · Director · 10% owner | Sale Amended | −22.8K | $8.03 | $183K | Jun 1, 2026 | Form 4 ↗ |
| Liu CurtisChief Technology Officer · Director · 10% owner | Sale | −22.2K | $8.03 | $178K | Jun 1, 2026 | Form 4 ↗ |
| Crook Nathaniel GlennChief Commercial Officer | Tax withholding | −101.3K | $6.06 | $614K | May 15, 2026 | Form 4 ↗ |
| Casey AndrewChief Financial Officer | Tax withholding | −64.9K | $6.06 | $393K | May 15, 2026 | Form 4 ↗ |
| Liu CurtisChief Technology Officer · Director · 10% owner | Tax withholding | −40.3K | $6.06 | $244K | May 15, 2026 | Form 4 ↗ |
| Skates SpenserCEO and President · Director · 10% owner | Tax withholding | −39.6K | $6.06 | $240K | May 15, 2026 | Form 4 ↗ |
| Liu CurtisChief Technology Officer · Director · 10% owner | Sale | −17.6K | $8.12 | $143K | May 4, 2026 | Form 4 ↗ |
| Skates SpenserCEO and President · Director · 10% owner | Grant / award | +1.3M | $0.00 | $0 | Apr 21, 2026 | Form 4 ↗ |
| Crook Nathaniel GlennChief Commercial Officer | Grant / award | +974.9K | $0.00 | $0 | Apr 15, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding AMPL · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| Select Software and IT Services Portfolio Fidelity Select Portfolios | 4.5M | $35.1M | 0.47% | May 31, 2026 |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 2.8M | $21.2M | 0.00% | Jun 30, 2026 |
| iShares Russell 2000 ETF iShares Trust | 2.5M | $19.4M | 0.02% | Jun 30, 2026 |
| VANGUARD INFORMATION TECHNOLOGY INDEX FUND VANGUARD WORLD FUND | 2.2M | $17.5M | 0.01% | May 31, 2026 |
| VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS | 2.0M | $15.5M | 0.01% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund Fidelity Salem Street Trust | 1.1M | $9.4M | 0.03% | Jul 31, 2026 |
| VANGUARD SMALL-CAP GROWTH INDEX FUND VANGUARD INDEX FUNDS | 1.2M | $8.9M | 0.02% | Jun 30, 2026 |
| VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 1.1M | $8.3M | 0.01% | Jun 30, 2026 |
| THE HARTFORD SMALL COMPANY FUND HARTFORD MUTUAL FUNDS, INC | 884.3K | $7.9M | 1.16% | Jul 31, 2026 |
| College Retirement Equities Fund - Total Global Stock Account COLLEGE RETIREMENT EQUITIES FUND | 1.1M | $7.6M | 0.01% | Mar 31, 2026 |
Mutual funds and ETFs whose N-PORT filings list AMPL's shares (CUSIP 03213A104), each fund at its latest report since Mar 8, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- Abigail P. JohnsonSCHEDULE 13G · passive (13G) · 6.0M shares5.8%
Aug 6, 2026 · ↗ - FMR LLCSCHEDULE 13G · passive (13G) · 6.0M shares5.8%
Aug 6, 2026 · ↗ - BlackRock, Inc.SCHEDULE 13G/A · passive (13G) · 7.9M shares7.6%
Jul 27, 2026 · ↗ - AllianceBernstein L.P.SCHEDULE 13G/A · passive (13G) · 317.6K shares0.3%
May 18, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming Amplitude, Inc. as client
No lobbying filings found naming Amplitude, Inc. as the client.
Government Contracts
Federal awards to Amplitude, Inc. · USAspending
No federal contract awards found for Amplitude, Inc..
U.S. Patents
Recent USPTO applications naming Amplitude, Inc.
No USPTO patent applications found for Amplitude, Inc..
Annual Financials
From AMPL's 10-K filings · XBRL
No annual XBRL figures on record for AMPL. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
No stock splits in AMPL's price history.
About Amplitude, Inc.
From SEC EDGAR company records
Industry (SIC 7372)Services-Prepackaged Software
SectorTechnology
HeadquartersSAN FRANCISCO, CA
IncorporatedDE
SEC CIK0001866692 ↗