Marvell Technology Stock (MRVL) After Hours Today (Dec. 17, 2025): Moody’s Upgrade, AI Selloff, and What to Watch Before the Market Opens Dec. 18
Marvell Technology, Inc. (NASDAQ: MRVL) ended Wednesday’s session sharply lower and then steadied in after-hours trading, as investors weighed a broad “AI funding jitters” pullback across big tech and semiconductors against a notable piece of company-specific good news: Moody’s upgraded Marvell’s senior unsecured ratings to Baa2. By the close, MRVL finished around $81.7, down roughly 2.8% on the day, after swinging widely between the low-$80s and upper-$80s. In the extended session after the bell, the stock was little changed, holding near that $81–$82 area as of the evening update. MarketBeat Below is what mattered for MRVL after the bell on