Marvell Technology has strong long-term growth prospects, but investors have been selling it recently due to underwhelming near-term guidance.Top artificial intelligence (AI) stocks typically trade at high valuations. Investors often pay significant premiums for the future growth they anticipate will come from these high-powered businesses. The danger with paying high multiples, however, is that it leaves little to no margin of safety in the event that something goes wrong, or that demand suddenly tapers of ...