Market movers: Lumentum faces scrutiny over acquisition while fossil group gains on stronger sales forecast

CoreWeave shares rose in premarket trading following a quarterly report where the AI computing provider alleviated concerns regarding its debt structure, confirming robust sales growth. The company projected revenues between $13 billion and $13.3 billion for the current year, surpassing both its prior estimate of up to $13.2 billion and Wall Street's prediction of $12.9 billion. Meanwhile, Lumentum Holdings saw its stock decline ahead of the US market open, as investment experts offered a cautious initial assessment of Marvell Technology's proposed $115 billion acquisition of the firm. In contrast, Fossil Group experienced a rally after announcing an upward revision to its full-year sales outlook, a move that followed the company reporting quarterly growth ahead of expectations.