On August 4, Micron Technology rose 3.45% in pre-market trading, trading at approximately $861.29/share, with turnover of $154 million.

On the news front, Moody's upgraded Micron Technology's senior unsecured bond rating to BAA1 with a stable outlook, reflecting recognition of its strengthened financial position. Separately, Powerchip Semiconductor confirmed that its cooperation with Micron will proceed as planned, further bolstering market confidence.

The rebound follows a sharp decline of over 5% in the prior session, driven by reports that China's CXMT plans to build a second DRAM facility in Beijing — potentially doubling its capacity — alongside a SemiAnalysis report revealing that Nvidia's Rubin Ultra preview specifications fell below expectations, with HBM configuration downgraded from HBM4E 12-Hi 384GB to HBM4 8-Hi 192GB, significantly reducing AI server DRAM budgets. In the options market, a notable bull put spread worth approximately $17.19 million was observed, signaling concentrated institutional bullish positioning.

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