Palantir and Sandisk Both Posted Blowout Earnings in 2026. The Stock Market Rewarded Only One of Them the Same Day. Here's the Difference.

Despite both Palantir and Sandisk reporting exceptional earnings in 2026, the market responded differently to each company. Sandisk's stock soared following its earnings report due to strong NAND flash memory demand from data centers and a shift to long-term contracts, while Palantir's stock dropped despite robust growth. The divergence reflects investor concerns about SaaS vulnerability to AI agents and Palantir's stretched valuation at 149x earnings, compared to Sandisk's more reasonable 47x earnings multiple.