Mixed US Stock Action: Western Digital Surges on AI Demand as RTX Corp Slips

Key Facts

1Western Digital (WDC) stock rose 4.79% driven by strong AI-related storage demand and bullish analyst sentiment.

2RTX Corp (RTX) shares fell 3.61% due to profit-taking in the defense sector and operational challenges at Pratt and Whitney.

As artificial intelligence continues to redefine the technology landscape, US equities showed divergent performance reflecting shifting investor priorities. Western Digital (WDC) shares surged 4.79% driven by robust demand for AI-related storage solutions and bullish analyst sentiment regarding its structural simplification. Conversely, RTX Corp (RTX) shares declined by 3.61% following profit-taking in the defense sector and persistent operational challenges within its Pratt and Whitney engine division.

The rally in Western Digital comes as storage and semiconductor peers experience a cyclical upswing, with competitor Seagate Technology recently issuing positive guidance that bolstered sector confidence per market data. For RTX, margin pressures linked to high interest rates and engine recall costs weighed on sentiment, despite steady global defense demand. Compared to peers, Lockheed Martin traded with relative stability, suggesting RTX's decline was largely driven by idiosyncratic operational hurdles per market data.

Traders should monitor key technical levels as WDC closed at $746.23 and RTX at $185.6 as of the June 18, 2026 session. Looking ahead, upcoming US industrial production data could influence risk appetite across the manufacturing and tech sectors. Markets will also be sensitive to any further updates from RTX management regarding the Pratt and Whitney repair timeline to gauge the long-term impact on free cash flow.