Skip to navigationSkip to main contentSkip to right columnADVERTISEMENTRich Smith, The Motley FoolMon, June 29, 2026 at 6:48 PM GMT+2 2 min readSandisk (NASDAQ: SNDK) stock tumbled 4% through 12:15 p.m. ET Monday, despite closing out last week on a strong note of support. After the close of trading on Friday, investment bank Jefferies more than doubled its price target for the maker of flash computer memory to $3,000 per share and urged investors to buy.By Monday morning, investors had already forgotten all about that.Missed Nvidia in 2009? This Rare Signal Is Flashing Again. In 2009, a "Double Down" signal flashed for a little-known chipmaker called Nvidia. For the first time in years, that same "Total Conviction" signal is flashing for a company 1/100th the size of Nvidia. Continue »Image source: Getty Images.What's worrying Sandisk investors todayWhy is that? Perhaps it's because of the headlines that came out between Jefferies' price target hike Friday, and the start of trading Monday: Namely, reports that Apple (NASDAQ: AAPL) is petitioning the U.S. government for permission to skip purchases of overpriced Micron (NASDAQ: MU) and Sandisk memory chips, and buy from Chinese supplier CXMT instead.This may not seem like an immediate threat to Sandisk. CXMT is primarily a supplier of DRAM -- not NAND flash. Still, if Apple's move becomes a trend -- and it certainly could, as users of memory chips scramble not just to obtain lower prices, but to obtain access to supply from any source available -- then the threat CXMT poses to Micron could see mirror images in threats to Sandisk from Chinese NAND suppliers.Should you worry?So the threat is real.That said, crunching the numbers this morning, Mizuho analyst Jordan Klein argues the threat may also be overblown, because prices are still going up and buyers are still locking in supply of DRAM and NAND from Micron and Sandisk -- even with the potential for access to cheap Chinese chips on the horizon.With Micron forecasting continued memory supply deficits through 2027 and into 2028, and buyers lining up to sign long-term supply deals, cheap Chinese chips might not arrive fast enough to do Sandisk any harm.Should you buy stock in Sandisk right now?Before you buy stock in Sandisk, consider this:The Motley Fool Stock Advisor analyst team just identified what they believe are the 10 best stocks for investors to buy now… and Sandisk wasn't one of them. The 10 stocks that made the cut could produce monster returns in the coming years.Consider when Netflix made this list on December 17, 2004... if you invested $1,000 at the time of our recommendation, you'd have $398,052!* Or when Nvidia made this list on April 15, 2005... if you invested $1,000 at the time of our recommendation, you'd have $1,181,688!*Terms and Privacy PolicyEU DSA contactPrivacy & Cookie SettingsMore Info