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Two "explosive" earnings reports triggered a sharp stock price drop—the core contradiction lies in this: the valuation logic of the AI storage sector has shifted from "performance realization" to "continuous performance exceeding expectations." Current earnings reports only prove the past, and guidance falling short of expectations became the trigger for the pullback. 📊 Earnings Highlights: Historic Growth Both companies' revenue and profits far exceeded expectations: Western Digital (WDC): Q4 revenue $3.75 billion (YoY +44%), adjusted EPS $3.56 (YoY +109%). · SanDisk (SNDK): Q4 revenue $8.97 billion (YoY +372%), adjusted EPS 0.29. Data center revenue surged 1298% YoY**. 📉 Root Cause of the Plunge: "Expectation Gap" under High Expectations After soaring about 200% and 469% respectively during the year, the market's threshold for "surprise" is extremely high. · Guidance "Not Surprising Enough": SanDisk's next quarter revenue guidance midpoint is $10.55 billion, below the expected $10.8 billion; Western Digital's guidance also lags behind strong outlooks from competitor Seagate Technology. · Gross Margin "Peaking at High Levels": SanDisk's Q4 gross margin was 84.6%, but next quarter guidance is only 83%-85%; Western Digital's 55%-56% is also lower than Seagate's 57%+. 🌍 Chain Reaction: Collective Weakness from US Stocks to Asia-Pacific Pessimism quickly spread: SK Hynix and Samsung Electronics plunged in Asia-Pacific pre-market trading, Kioxia dropped over 10%; US storage stocks like Micron and Seagate also came under pressure. ⚖️ Market Divergence: Golden Pit or Cycle Peak? · Bulls (Long-term Optimistic): Citi believes inventory is low and capacity insufficient; China Asset Management sees strong sustained AI demand; Mizuho raised target prices betting on supply-demand imbalance. #AIMemoryBullTest #FedHawksVsWeakJobs #SpaceXUnlockRebound