Airbnb Inc. delivered stronger-than-expected second-quarter results, posting a 13% increase in revenue to $3.10 billion and earnings of $1.03 a share, ahead of analysts’ estimates near 94 cents. Net income rose 16% to $642 million, while adjusted EBITDA reached $1.04 billion, giving the short-term-rental platform a 34% margin versus 32% predicted. Travel momentum pushed gross booking value up 11% to $23.5 billion and lifted nights and experiences booked 7% to 134.4 million. Management said demand accelerated from April through July, with particular strength in Latin America and Asia-Pacific. For the current quarter, the company projects revenue of $4.02 billion to $4.10 billion, exceeding the $4.05 billion Wall Street consensus at the midpoint. Airbnb cautioned, however, that growth rates could moderate later in the year because of tougher year-earlier comparisons. The board authorized a new $6 billion share-repurchase program after buying back $1 billion of stock in the quarter; $1.5 billion from a prior mandate remained unused. Shares were little changed in after-hours trading.