Lumentum stock sinks 8% after tech-led slide — what traders watch next
New York, Jan 14, 2026, 19:29 EST — After-hours Lumentum Holdings’ stock plunged 8.2% on Wednesday, closing at $331.62 before nudging higher to around $332 in after-hours trading. (MarketWatch) This move is significant as Lumentum has ranked among the most crowded “AI infrastructure” plays. Yet the tape has turned against pricey winners. With earnings season kicking off, investors are faster to slash risk amid broader market jitters. No fresh company news explained the slide. Traders are left to sift through the selloff in tech, a stock that surged into January, and an upcoming earnings report that might either steady things