Amplitude, Inc. - Class A (AMPL)
AMPL moved a median of 0.00% 30 minutes after news, and -0.10% by the close. How AMPL actually reacts to news — the realized, point-in-time move the market made, measured across 940 labeled events over the last three years with zero look-ahead.
AMPL’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 47% | 938 |
| 30-min | 0.00% | 50% | 940 |
| 60-min | -0.05% | 47% | 940 |
| to close | -0.10% | 45% | 938 |
| Middle 50% of AMPL reactions | -0.70% to +0.77% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 940 |
Half of all Amplitude, Inc. - Class A news events land between -0.70% and +0.77% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How AMPL reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 25 | -2.86% | 24% | -2.52% |
| Coverage initiations | 14 | +1.88% | 79% | +2.96% |
| Rating reiterations | 74 | -0.00% | 50% | -0.17% |
| Price-target raises | 14 | -0.19% | 50% | +1.36% |
| Price-target cuts | 18 | +0.31% | 61% | -0.71% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 1 further class was observed with fewer than 10 measured events and is not published. See how AMPL ranks against every other measured name →
That’s how AMPL usually reacts — get an email when it moves on news →Email me when AMPL moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to AMPL's baseline. Nothing else.
Recent AMPL events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Amplitude Appoints Statsig Founder Vijaye Raji to Board of Directors | Press release | Business Wire | -0.31% | -7.41% | |
| Form 8-K Amplitude, Inc. For: Oct 15 | SEC filing · Form 8-K | SEC EDGAR | -0.31% | -7.41% | |
| Amplitude to Host Third Quarter 2026 Earnings Webcast on November 5, 2026 | Press release | Business Wire | +0.91% | -0.84% | |
| Battery Ventures Promotes Brandon Gleklen to Partner | Press release | Business Wire | +0.86% | +2.46% | |
| Form 10-Q Amplitude, Inc. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.25% | +6.21% | |
| Amplitude Announces Second Quarter 2026 Financial Results | Press release | Business Wire | +0.25% | +6.21% | |
| Form 8-K Amplitude, Inc. For: Aug 05 | SEC filing · Form 8-K | SEC EDGAR | +0.25% | +6.21% | |
| Amplitude to Host Second Quarter 2026 Earnings Webcast on August 5, 2026 | Press release | Business Wire | +1.33% | -1.43% | |
| Form 8-K Amplitude, Inc. For: Jun 09 | SEC filing · Form 8-K | SEC EDGAR | -1.63% | +2.08% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating Amplitude, Inc. (AMPL) And Encourages Shareholders to Connect | Press release | ACCESS Newswire | -0.50% | +9.89% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against Amplitude, Inc. (AMPL) And Encourages Shareholders to Reach Out | Press release | ACCESS Newswire | +0.41% | +6.18% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against Amplitude, Inc. (AMPL) and Encourages Shareholders to Learn More About the Investigation | Press release | ACCESS Newswire | +0.37% | +2.84% | |
| 2026 CPO Insights Report Predicts Product Managers Will Disappear by 2030 | Press release | PR Newswire | +3.09% | +1.32% | |
| Amplitude, Inc. (AMPL) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +0.98% | +3.17% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Amplitude, Inc. (AMPL) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.01% | +0.68% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating Amplitude, Inc. (AMPL) And Encourages Stockholders to Connect | Press release | ACCESS Newswire | +0.23% | -1.22% | |
| Amplitude, Inc. (AMPL) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Stockholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +0.23% | -1.78% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against Amplitude, Inc. (AMPL) and Encourages Stockholders to Learn More About the Investigation | Press release | ACCESS Newswire | -0.08% | +1.52% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Amplitude, Inc. (AMPL) Investors to Inquire about Securities Investigation | Press release | ACCESS Newswire | +1.49% | +5.31% | |
| Amplitude to Present at Upcoming Investor Conference | Press release | Business Wire | +3.97% | +0.95% | |
| Form 10-Q Amplitude, Inc. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | -2.48% | |
| Amplitude Announces First Quarter 2026 Financial Results | Press release | Business Wire | +0.00% | -2.48% | |
| Form 8-K Amplitude, Inc. For: May 06 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -2.48% | |
| Form ARS Amplitude, Inc. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -1.14% | +0.28% | |
| Form DEF 14A Amplitude, Inc. For: Jun 09 | SEC filing · Form DEF | SEC EDGAR | -1.14% | +0.28% | |
| Form DEFA14A Amplitude, Inc. | SEC filing · Form DEFA14A | SEC EDGAR | -1.14% | +0.28% | |
| Mighty Capital Closes $91M Fund III, Tripling Its Size on the Strength of Six IPOs in Eight Years, Including Early Investments in Amplitude (NASDAQ: AMPL), and Groq | Press release | PR Newswire | +0.35% | +1.46% | |
| Amplitude Launches AI Assistant to Help Users Get Unstuck Inside Any Product Experience | Press release | Business Wire | +0.42% | -1.41% | |
| Amplitude Research Reveals a Generational AI Trust Gap is Costing Australian Businesses | Press release | Business Wire | +2.33% | +2.91% | |
| Amplitude to Host First Quarter 2026 Earnings Webcast on May 6, 2026 | Press release | Business Wire | +0.58% | -1.45% | |
| Amplitude Names Serial Founder Gab Menachem as CPO | Press release | Business Wire | -0.08% | +1.64% | |
| Amplitude to Present at Upcoming Investor Conferences | Press release | Business Wire | +2.06% | +7.66% | |
| Amplitude Announces Departure of President | Press release | Business Wire | -2.66% | -1.63% | |
| Form 8-K Amplitude, Inc. For: Feb 24 | SEC filing · Form 8-K | SEC EDGAR | -2.66% | -1.63% | |
| Form 10-K Amplitude, Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +2.29% | -0.83% | |
| Form S-8 Amplitude, Inc. | SEC filing · Form S-8 | SEC EDGAR | +1.84% | +0.43% | |
| Amplitude Announces Fourth Quarter and Fiscal Year 2025 Financial Results | Press release | Business Wire | +2.29% | -0.83% | |
| Form 8-K Amplitude, Inc. For: Feb 18 | SEC filing · Form 8-K | SEC EDGAR | +2.29% | -0.83% | |
| Amplitude Introduces Agentic AI Analytics for the Next Era of Product Experiences | Press release | Business Wire | +0.00% | +2.42% | |
| Amplitude to Host Fourth Quarter and Full Year 2025 Earnings Webcast on February 18, 2026 | Press release | Business Wire | -0.10% | +5.66% | |
| Amplitude Acquires InfiniGrow to Bring Revenue Analytics to Marketers | Press release | Business Wire | -1.01% | -5.81% | |
| Amplitude to Present at Upcoming Investor Conference | Press release | Business Wire | -0.19% | +0.43% | |
| Amplitude Unveils AI Feedback to Instantly Decode and Act on What Customers Want | Press release | Business Wire | +1.25% | -1.69% | |
| Form 10-Q Amplitude, Inc. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.90% | -0.60% | |
| Amplitude Announces Third Quarter 2025 Financial Results | Press release | Business Wire | -0.90% | -0.60% | |
| Form 8-K Amplitude, Inc. For: Nov 05 | SEC filing · Form 8-K | SEC EDGAR | -0.90% | -0.60% | |
| Amplitude Launches AI Visibility to Help Marketers Win in AI Search | Press release | Business Wire | -0.60% | -1.91% | |
| Amplitude Launches Agent-to-Agent Integration with GitHub to Accelerate Product Development | Press release | Business Wire | +1.24% | -0.74% | |
| Amplitude Brings Behavioral Data into AI Tools with MCP Launch | Press release | Business Wire | -0.20% | +2.32% | |
| Amplitude to Host Third Quarter 2025 Earnings Webcast on November 5, 2025 | Press release | Business Wire | -1.79% | -2.52% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the AMPL section they belong to.
Where else AMPL is measured.
AMPL earnings → · Analyst actions → · SEC filings →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Amplitude, Inc. - Class A's median reaction calculated?
Every labeled AMPL news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 940 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 50% of AMPL's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does AMPL's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.