Fastly Shares Jump After Meta's Muse AI Agent Drives Traffic Surge

Fastly shares climbed sharply in the September 23 session after a traffic analysis showed Meta's new Muse AI agent is driving a notable increase in requests through Fastly's content-delivery network. Wire reports flagged the move under two separate headlines the same day, pointing to unusual investor interest in the connection between Muse's growth and Fastly's infrastructure business. The link matters because Fastly, a smaller player in the content-delivery market, has struggled for years to show it can capture growth from major platform launches. If Muse traffic keeps scaling the way ChatGPT's did after its 2022 launch, that could translate into incremental revenue for the infrastructure vendors sitting underneath it. What isn't yet clear is how much of Fastly's current traffic is directly attributable to Muse versus other factors, or whether the relationship is contractual and durable. Investors are reacting to a traffic signal, not a disclosed revenue agreement.