Pinterest Inc. reported its third-quarter earnings for 2024, with revenue reaching $898.4 million, up 18% year-over-year, surpassing expectations of $896.7 million. The company's earnings per share (EPS) was $0.40, above the consensus estimate of $0.34, while GAAP EPS was $0.04. However, the stock experienced a significant drop in after-hours trading due to a weaker-than-expected Q4 revenue guidance of $1.125 billion to $1.145 billion, compared to the anticipated $1.15 billion. This guidance, coupled with concerns over AI-driven personalization costs, led to a 13% plunge in Pinterest's stock price. Despite the revenue growth, Pinterest's net income was $30.56 million, representing a 354% increase year-over-year, with monthly active users (MAUs) increasing by 11% to a record 537 million. Non-GAAP operating expenses are projected to be between $495 million and $510 million for Q4.