Klaviyo shares surge 10.03% after-hours on ChatGPT app integration, leadership changes, and analyst upgrades.

Klaviyo Inc. surged 10.03% in after-hours trading following the announcement of a new ChatGPT app integration, enabling marketers to access campaign data directly within the AI platform. The move, highlighted in recent news, aligns with broader strategic initiatives to enhance AI-driven marketing capabilities. Additionally, the appointment of Chano Fernández as co-CEO, effective January 1, 2026, underscored leadership stability and a focus on go-to-market strategies, bolstering investor confidence. While prior reports noted competitive pressures from platforms like Maestra and a 52-week low stock price, the immediate after-hours rally reflects optimism around Klaviyo’s product innovation and leadership changes, which analysts have cited as potential catalysts for earnings resilience. The stock is set to report quarterly results in five days, further fueling short-term speculation.