Klaviyo is trading at $20.31, down 4.92% in after-hours trading, with no clear cause for the decline established.

  • Klaviyo released Q3 results after the November 4 close: revenue was $387.2 million, up 25% year over year, and non-GAAP diluted EPS was $0.22.
  • The company raised FY26 revenue guidance to $1.537–$1.541 billion. Major indexes were higher.