Stocks extended declines as escalating concern about the Mideast conflict pushed oil futures higher, spurring inflation fears with US midterm elections less than two weeks away. Meta Platforms Inc. tumbled as investors parsed its results along with the rest of the latest batch of technology earnings for evidence that massive spending on AI is paying off. Selling was concentrated in technology megacaps, with the Nasdaq 100 Index sliding as much as 3% before paring the decline.