Meta’s Muse personal AI agent is intensifying investor scrutiny of online travel aggregators after the platform began handling searches, comparisons and bookings directly with airlines and hotels. Expedia Group shares fell 7% to $260.33, Airbnb dropped 6% to $151.66 and Booking Holdings declined 5% to $156.02 in Wednesday morning trading. Meta shares rose 2% to $751.12, while the Consumer Discretionary Select Sector SPDR Fund fell 2% and the Invesco QQQ Trust declined 1%, indicating sharper pressure on travel intermediaries than on the broader market. The selloff centers on disintermediation: if an AI agent completes a transaction without sending users to an aggregator, the intermediary may lose traffic and fees. Expedia is viewed as particularly exposed because of its aggregation-heavy model, while Airbnb owns access to listings that cannot be booked elsewhere. Goldman Sachs has warned that businesses reliant on recurring charges, add-on fees and customer passivity could face disruption from similar agents. Muse launched on September 8, became the top free app in the U.S. and Canada and recorded roughly 2.8 million downloads in its first 12 days, while Truist Securities estimates it could generate at least $28.5 billion in annual revenue by fiscal 2030.