Premarket Movers | Storage Shares Rise with Micron, Roundhill Memory ETF up Nearly 3%; SanDisk up 1%. Optical Stocks Jump with POET up 11%; AAOI up Nearly 4%

TigerMay 18, 2026 8:56 AM

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Storage shares jumped in premarket trading. Micron, Roundhill Memory ETF up nearly 3%; Seagate Technology, Western Digital, SanDisk up around 1%.

Optical stocks jumped in premarket trading. POET Technologies up over 11%; AAOI up nearly 4%; Corning, Coherent up over 1%.

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