There is a particular kind of stock market setup that immediately gets my attention. The stock price falls. The headlines get uglier. Momentum traders begin quietly backing toward the exits. People who loved the company two months ago suddenly discover seventeen reasons they never really liked it in the first place. And meanwhile, the actual business keeps making more money. That is when I start paying attention. Western Digital Corporation (NASDAQ: WDC) has become one of the clearest examples of that setup I have seen recently. The shares fell more than 30% from their 2026 high, yet the company's underlying earnings story did not collapse with the stock. Seeking Alpha's quantitative system subsequently upgraded the shares to a Strong Buy, while its sector-relative valuation grade improved dramatically from an F six months earlier to a B. That combination fascinates me because it gets to the heart of what investing actually is. A business and its stock are not the same thing. S...