In U.S. premarket trading, AI chip manufacturer Cerebras Systems tumbled nearly 18% after second-quarter revenue of $180 million fell short of the $194 million consensus estimate. StubHub lost nearly 17% following adjusted gross margin of 82.2% versus an 84.3% estimate. Conversely, battery manufacturer EnerSys surged 13% after first-quarter adjusted earnings of $3.66 per share beat expectations, while Birkenstock gained 10% after second-quarter revenue and adjusted EBITDA exceeded forecasts.
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