MRVL is trading 8.9% down at $280.59 today. - The decline follows a "sell-the-news" reaction after its official inclusion in the S&P 500 on June 22, as early index-related buying pressure cleared. - Sentiment is also weighed down by reports of outgoing CFO Willem Meintjes filing to sell approximately 211,000 shares (worth ~$65 million). - This coincides with a broader tech sector downturn and ongoing concerns from a June 9 analyst report about delays in co-packaged optics commercialization affecting optical networking chip names.