Margin dilution and concerns over near-term revenue could become key near-term challenges for Broadcom , some Wall Street analysts believe. Shares shed 6% in Friday's premarket session despite the semiconductor manufacturer posting a fiscal fourth-quarter earnings and revenue beat . Broadcom also guided for current-quarter revenue to come in at $19.1 billion, representing 28% year-over-year growth and higher than the $18.3 billion analysts polled by LSEG have penciled in. CEO Hock Tan also said in a statement that Broadcom expects AI chip sales will double this quarter to $8.2 billion from this time last year. However, other comments the CEO made were hurting the stock on Friday morning. One sore spot on Broadcom's earnings report was its margins. "Amid very crowded investor positioning, A

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