KVYO ▲ +2.9% - Klaviyo, Inc. $KVYO - Klaviyo Goes Headless, Opening Its Platform to Agents and Marketers Wherever They Work Klaviyo rose 2.9% today after announcing it is going headless, opening its platform to agents and marketers to work from any location or system. The move to decouple the platform from a single interface expands accessibility and integration possibilities for users, which investors appear to have viewed positively. 09-SEP-2026 09:20 AM ET