Sandisk Corporation (NASDAQ:SNDK) experienced a dramatic selloff in July, with shares plummeting 55% from their June 30 closing price. The stock fell an additional 6.4% on Wednesday to $1,026.08, marking the fourth consecutive session of declines and bringing its July loss to 54.9%. Three straight double-digit percentage drops erased 31.9% of the company's market value as of Tuesday.
The sharp decline has left Sandisk trading at what appears to be a discount based on projected run-rate earnings, but the valuation is highly sensitive to the sustainability of the company's exceptional profit margins. At its current price, Sandisk trades at a trailing price-to-earnings ratio of 35.7. However, applying the midpoint of the fourth-quarter adjusted earnings guidance of $31.50 on an annualized basis yields a multiple of just 8.1.
The stark difference in valuation multiples is almost entirely attributable to margins. Sandisk's adjusted gross margin for the third quarter was 78.4%, up sharply from 51.1% in the previous quarter and 22.7% in the same period last year. The company has guided for a gross margin between 79% and 81% in the fourth quarter.
A sensitivity analysis, using $8 billion in quarterly revenue, $490 million in adjusted operating costs, 158 million diluted shares, and a 13.9% tax rate, illustrates the impact of margin changes. At the 80% midpoint of guidance, projected quarterly EPS is $32.30, yielding an annualized P/E of 7.9x. At 60% margins, EPS would be $23.60 and the multiple 10.9x. At 40% margins, EPS drops to $14.90 and the P/E rises to 17.2x. If margins revert to last year's 22.7%, EPS would be just $7.30, and the P/E would balloon to 35.0x.
This fundamental dichotomy defines the investor play. Bulls are wagering that Sandisk's remarkable profit margins are now permanent, driven by surging AI-related demand for NAND flash memory. CEO David Goeckeler described the most recent quarter as a “fundamental inflection point,” noting that multiyear customer agreements are expected to provide “more durable earnings power.” By April 30, Sandisk had entered into five such agreements, and data center revenue jumped 233% quarter over quarter.
However, bears point to risks that could undermine the high-margin thesis. An acceleration in NAND flash-memory supply, a reduction in AI capital expenditure, or a return to typical industry margins could eliminate the currently low run-rate multiple. Concerns about expanded production in China and a potential slowdown in AI investment have prompted questions over how long current pricing can hold.
Sandisk is scheduled to report fiscal fourth-quarter earnings after markets close on August 5, followed by its Investor Day on August 13. Options market pricing suggests an anticipated 12% swing after the earnings release, according to Bloomberg data. In four of the previous five quarters, Sandisk's actual share movement exceeded the implied options move. Trefis placed one-year implied volatility at 115%, nearly matching the 111% realized volatility, based on Monday's reference price of $1,278.23.
For context, peer memory-chip makers showed less volatility on Wednesday. Micron Technology (NASDAQ:MU) dropped 4.4%, while Western Digital Corporation (NASDAQ:WDC) edged up 0.2%. The broader market is weighing whether unprecedented AI-driven demand can be sustained amid potential new supply headwinds.
Ultimately, the August 5 earnings test is more nuanced than a simple revenue beat. Investors need proof that margins close to 80% are sustainable through the cycle. If Sandisk can deliver on that front, the stock could stage a pronounced recovery. If not, the current valuation discount could prove illusory.
