Memory chip stocks took a beating this week as investors fled semiconductor names amid Middle East conflict. Sandisk fell 11%, Western Digital dropped 7.9%, Micron declined 4%, and Seagate tumbled 8.8%. The sector had rallied through 2025 but reversed course as uncertainty mounted over the conflict's duration and economic impact.

Airline stocks suffered even steeper losses, with United Airlines plunging 17.1%, American Airlines down 13.4%, Delta Air Lines declining 18.5%, Southwest Airlines tumbling 20%, and JetBlue falling 22%. European carriers weren't spared either - IAG (British Airways owner) dropped 20.5% while Air France-KLM and Lufthansa fell around 13%.

In M&A news, Day One Biopharmaceuticals shares surged 65% after Servier agreed to acquire the company for $21.50 per share, valuing it at approximately $2.5 billion. The deal, expected to close in Q2 2026, signals continued consolidation in the biotech sector.

Tech stocks showed mixed performance. Marvell Technology rallied 22% after beating earnings and providing upbeat guidance, with analysts citing strong AI infrastructure positioning. Meanwhile, The Trade Desk jumped 18% on rumors of a potential OpenAI partnership, though one analyst downgraded shares, questioning whether the deal's value justified current prices.