Marvell Technology (MRVL) shares skyrocketed 10.08% in intraday trading on Tuesday, extending a pre-market surge driven by a powerful mix of positive catalysts. The semiconductor sector received a broad boost after Palantir Technologies and ON Semiconductor delivered strong earnings and upbeat forecasts, easing concerns about the pace of AI investment. Marvell, a key player in optical networking and AI memory infrastructure, rode the wave of renewed investor confidence.

Adding to the momentum, a report that the U.S. Federal Communications Commission is drafting a ban on Chinese optical transceivers sent optical-networking stocks sharply higher. The potential import restriction would reduce competition from Chinese suppliers like Zhongji InnoLight, directly benefiting Marvell's digital signal processor business. Meanwhile, a flurry of analyst target price increases from KeyBanc, Renaissance Capital, and BNP Paribas, along with Marvell's own announcement of enhancements to its AI memory portfolio, provided additional fundamental support.

The double-digit intraday surge marks a dramatic reversal from the previous session, when Marvell fell roughly 5% amid a broad semiconductor sell-off triggered by AI valuation fears and weakening memory chip demand. The combination of easing trade threats and robust AI demand signals propelled the stock to one of its strongest single-day rallies in recent months.