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An analyst note highlighted that Marvell Technology's less-heralded optical networking and supporting components business could represent a larger opportunity than its well-known custom chip design work, potentially worth up to $30 billion. The commentary points to underappreciated upside beyond Marvell's core custom silicon franchise. Despite that bullish long-term framing, Marvell shares fell sharply, with commentator Jim Cramer weighing in on the drop. The decline underscores near-term investor skepticism or profit-taking even as some analysts continue to highlight the company's longer-term optical networking growth potential.