On July 17, Western Digital fell 6.31% in pre-market trading, trading at 439.32 USD/share, with turnover of approximately $4.04 million. The decline is part of a broader sell-off across the storage chip sector, with peers SanDisk down 5.92% and Seagate Technology down 4.90%.

On the news front, the direct catalyst for this round of decline is the Korean Financial Services Commission's formal announcement to raise minimum margin requirements for single-stock leveraged ETFs and to ban the launch of new single-stock leveraged products. The regulatory tightening struck a sector that had accumulated substantial gains driven by AI demand expectations throughout the year, triggering concentrated profit-taking as funds rushed to lock in gains under the regulatory headwind.

Multiple factors amplified the correction. Earlier, a Korean brokerage downgraded SK Hynix's Q2 earnings forecast to 60.4 trillion won, below the market consensus of 65 trillion won, and the resulting global storage sector selling pressure remains undigested. Meanwhile, several investment banks including Citi (target $800), Wells Fargo ($730), and BNP Paribas ($660) have recently raised their price targets on Western Digital, though short-term selling pressure continues to dominate price action.

(The above content is based on publicly available market information, generated by a program or algorithm, and is intended solely as a stock movement alert. It does not constitute investment advice or a basis for trading decisions.)