Klaviyo, Inc. (KVYO)
KVYO moved a median of +0.02% 30 minutes after news, and +0.27% by the close. How KVYO actually reacts to news — the realized, point-in-time move the market made, measured across 526 labeled events over the last three years with zero look-ahead.
KVYO’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.11% | 52% | 524 |
| 30-min | +0.02% | 50% | 526 |
| 60-min | +0.26% | 55% | 526 |
| to close | +0.27% | 54% | 522 |
| Middle 50% of KVYO reactions | -0.78% to +1.09% |
|---|---|
| Median reaction (30-min) | +0.02% |
| Measured reactions | 526 |
Half of all Klaviyo, Inc. news events land between -0.78% and +1.09% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How KVYO reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 35 | -0.41% | 37% | -0.89% |
| Analyst downgrades | 13 | +1.73% | 92% | +1.50% |
| Coverage initiations | 89 | -1.04% | 32% | +0.93% |
| Rating reiterations | 163 | -0.26% | 41% | -0.08% |
| Price-target raises | 39 | +0.05% | 54% | +1.11% |
| Price-target cuts | 43 | +0.08% | 54% | -0.08% |
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. See how KVYO ranks against every other measured name →
That’s how KVYO usually reacts — get an email when it moves on news →Email me when KVYO moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to KVYO's baseline. Nothing else.
Recent KVYO events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Klaviyo Goes Headless, Opening Its Platform to Agents and Marketers Wherever They Work | Press release | Business Wire | -3.19% | -8.85% | |
| Klaviyo to Participate in Upcoming Investor Events | Press release | Business Wire | +1.63% | +1.43% | |
| Form 10-Q Klaviyo, Inc. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +4.78% | +3.21% | |
| Form 8-K Klaviyo, Inc. For: Aug 05 | SEC filing · Form 8-K | SEC EDGAR | +4.78% | +3.21% | |
| Klaviyo Delivers Strong Q2 as Autonomous B2C CRM Strategy Gains Momentum | Press release | Business Wire | +4.78% | +3.21% | |
| Klaviyo strengthens AI capabilities with strategic acquisition of Agency team and technology | Press release | Business Wire | +4.78% | +3.21% | |
| Klaviyo to Announce Second Quarter 2026 Results on August 5, 2026 | Press release | Business Wire | -1.17% | -0.94% | |
| Form 8-K Klaviyo, Inc. For: Jul 13 | SEC filing · Form 8-K | SEC EDGAR | +1.51% | +1.69% | |
| Klaviyo Appoints Erica Smith as Chief Financial Officer | Press release | Business Wire | +1.51% | +1.69% | |
| Klaviyo Enters the (Social) Chat | Press release | Business Wire | +0.88% | -2.05% | |
| Klaviyo Launches AI Agents that Work Together to Drive Revenue for Consumer Brands | Press release | Business Wire | +3.88% | +2.93% | |
| Form 8-K Klaviyo, Inc. For: Jun 09 | SEC filing · Form 8-K | SEC EDGAR | +2.43% | +0.69% | |
| Klaviyo to Participate in Upcoming Investor Events | Press release | Business Wire | -0.81% | +1.15% | |
| Klaviyo Expands Integration with Anthropic to Bring Agentic Marketing Workflows to Claude | Press release | Business Wire | -0.43% | -1.93% | |
| Form 10-Q Klaviyo, Inc. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -7.90% | -8.13% | |
| Form 8-K Klaviyo, Inc. For: May 01 | SEC filing · Form 8-K | SEC EDGAR | -7.90% | -8.13% | |
| Klaviyo Delivers Strong Q1 2026 Results: 28% Revenue Growth, Record Operating Margin, and Raises Full Year Outlook | Press release | Business Wire | -7.90% | -8.13% | |
| Klaviyo Brings Custom AI Skills to Customer Agent, Built on its CRM | Press release | Business Wire | +0.78% | +1.52% | |
| Form ARS Klaviyo, Inc. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.26% | +2.87% | |
| Form DEF 14A Klaviyo, Inc. For: Jun 09 | SEC filing · Form DEF | SEC EDGAR | +0.26% | +2.87% | |
| Form DEFA14A Klaviyo, Inc. | SEC filing · Form DEFA14A | SEC EDGAR | +0.26% | +2.87% | |
| Klaviyo Strengthens Canva Partnership with Expanded Integration to Help Marketers Build Creative Campaigns Faster | Press release | Business Wire | -0.05% | -0.51% | |
| Klaviyo to Announce First Quarter 2026 Results on May 5, 2026 | Press release | Business Wire | +1.38% | +5.88% | |
| Klaviyo Expands AI Agents to Power the Autonomous B2C CRM | Press release | Business Wire | -3.16% | -3.43% | |
| Klaviyo and Shopify Deepen Integration to Accelerate Global Commerce Growth | Press release | Business Wire | -0.20% | +0.69% | |
| Form 8-K Klaviyo, Inc. For: Mar 02 | SEC filing · Form 8-K | SEC EDGAR | +3.96% | +1.56% | |
| Klaviyo Announces $500 Million Share Repurchase Program with $100 Million Accelerated Share Repurchase | Press release | Business Wire | +3.96% | +1.56% | |
| Klaviyo and Google Announce Strategic Partnership to Power Autonomous Customer Experiences | Press release | Business Wire | +0.93% | -1.48% | |
| Klaviyo Executives to Participate in Morgan Stanley Technology, Media & Telecom Conference | Press release | Business Wire | -0.96% | +3.15% | |
| Form 10-K Klaviyo, Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -6.59% | -4.91% | |
| Form 8-K Klaviyo, Inc. For: Feb 10 | SEC filing · Form 8-K | SEC EDGAR | -6.59% | -4.91% | |
| Form S-8 Klaviyo, Inc. | SEC filing · Form S-8 | SEC EDGAR | -6.59% | -4.91% | |
| Klaviyo Delivers Outstanding 2025 Results: 32% Revenue Growth, Record Fourth Quarter and Raised Fiscal Year 2026 Outlook | Press release | Business Wire | -6.59% | -4.91% | |
| Introducing the Klaviyo app in ChatGPT | Press release | Business Wire | -0.14% | +0.04% | |
| Wunderkind Joins Klaviyo Marketplace, Bringing Identity-Based Personalization and Revenue Growth to E-Commerce Brands | Press release | Business Wire | +0.02% | +0.08% | |
| Klaviyo to Announce Fourth Quarter and Full Year 2025 Results on February 10, 2026 | Press release | Business Wire | +0.64% | +3.87% | |
| Form 8-K Klaviyo, Inc. For: Dec 08 | SEC filing · Form 8-K | SEC EDGAR | +0.51% | -0.84% | |
| Klaviyo Appoints Chano Fernández as co-CEO, Joining Co-Founder and co-CEO Andrew Bialecki | Press release | Business Wire | +0.51% | -0.84% | |
| Klaviyo to Participate in Barclays 23rd Annual Global Technology Conference | Press release | Business Wire | -0.11% | +1.50% | |
| Form 8-K Klaviyo, Inc. For: Dec 02 | SEC filing · Form 8-K | SEC EDGAR | -0.11% | +1.50% | |
| Klaviyo Breaks Records with First AI-powered BFCM | Press release | Business Wire | — | -0.23% | |
| Form 10-Q Klaviyo, Inc. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -6.72% | +1.41% | |
| Form 8-K Klaviyo, Inc. For: Nov 05 | SEC filing · Form 8-K | SEC EDGAR | -6.72% | +1.41% | |
| Klaviyo Delivers Outstanding Third Quarter with 32% Revenue Growth; Raises Full-Year Guidance | Press release | Business Wire | -6.72% | +1.41% | |
| Klaviyo to Announce Third Quarter 2025 Results on November 5, 2025 | Press release | Business Wire | +0.93% | -1.98% | |
| Form 8-K Klaviyo, Inc. For: Sep 25 | SEC filing · Form 8-K | SEC EDGAR | -0.11% | -0.84% | |
| Klaviyo Advances AI-first B2C CRM with the Launch of Marketing Agent and Customer Agent | Press release | Business Wire | -1.24% | -6.34% | |
| Klaviyo Recognized in IDC MarketScape for AI-Enabled Marketing Platforms | Press release | Business Wire | +0.12% | -1.53% | |
| New Consumer Data Reveals Financial Confidence Slump Driving Shift to Intentional Shopping | Press release | PR Newswire | +0.26% | +1.97% | |
| Klaviyo Research Uncovers a Collaboration Gap Dividing Marketing and Service Teams | Press release | Business Wire | +0.00% | -3.20% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the KVYO section they belong to.
Where else KVYO is measured.
KVYO earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is Klaviyo, Inc.'s median reaction calculated?
Every labeled KVYO 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 526 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 KVYO'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 KVYO'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.