Why is Marvell Technology (MRVL) stock moving?

MRVL is in a sharp, high-volume selloff. Price data shows the stock falling from about $251.65 on Oct 28 to a $171.41 close on Nov 2. That is a decline of roughly 32% in three sessions. The last three sessions had volume of about 727k, 679k and 911k, well above the roughly 200–300k seen earlier in October. The stock has broken below its October range of about $220–$250, and sellers have not let up. Nov 2 had an intraday low of $168.52, and the close sat near the bottom of the day's range. The stock is also far below its 52-week high of about $330, though still well above its 52-week low of about $71. At a P/E near 65, the valuation still assumes strong growth. I could not find a verified catalyst for the drop in the news available to me, so the cause is unclear. The move could reflect a sector-wide AI-semiconductor de-rating or company-specific news. Momentum is clearly negative in the near term. Heavy volume suggests capitulation may be near, but there is no confirmation of a bottom yet. The main near-term support levels are the Nov 2 low near $168, and then the high-$160s. Resistance sits near $196–$218, which is the gap zone from the recent breakdown.