Western Digital's stock surged 6.86% during intraday trading on Tuesday, reflecting significant investor optimism.

The upward movement is primarily driven by reports that Western Digital's hard disk drive production capacity is entirely sold out through the end of 2026. This sold-out status stems from multi-year supply agreements with AI data centers and hyperscale customers, some extending into 2027 and 2028, amid explosive demand for high-capacity storage solutions fueled by artificial intelligence and cloud computing growth.

Investor confidence is further bolstered by the company's strong financial performance, having surpassed revenue and earnings estimates in recent quarters, and a positive analyst outlook with raised price targets. The company's strategic pivot to become a pure-play hard disk drive leader following the separation of its Flash business is also viewed favorably by the market.