Why Is Marvell (MRVL) Stock Down 5.56% Today, Oct 16? AI Funding Concerns Deepen Semiconductor Sell-Off

Marvell Technology (MRVL) fell 5.56% to $227.83 on October 16, 2026, as a semiconductor-sector retreat and a disclosed CEO share sale weighed on sentiment. This draft examines the two catalysts, downside risks, and the technical levels that could shape the next move.