The artificial intelligence (AI) memory supercycle has transformed semiconductor investing, fueled by explosive demand for high-bandwidth memory (HBM) and advanced DRAM to power hyperscalers’ training clusters, inference deployments, and data center expansion.
Surging demand for graphics processing units (GPUs) and expanding agentic AI workloads are tightening memory chip supply — driving higher average selling prices and record profits for manufacturers.
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 »
Micron Technology (NASDAQ: MU) and Sandisk (NASDAQ: SNDK) have emerged as two popular plays in the AI memory boom. As of Aug. 6, Micron stock has gained roughly 715% over the past year and about 212% year-to-date. Sandisk has posted even more dramatic gains, nearing 3,000% returns over the last 12 months and roughly 439% so far in 2026.
With that said, I think a stronger opportunity may be hiding in plain sight with South Korean rival SK Hynix (NASDAQ: SKHY). Let’s dig into why.
Market leadership beyond Micron and Sandisk
Micron designs and manufactures DRAM and has growing exposure to HBM for AI accelerators. Sandisk focuses primarily on NAND flash and solid-state drives (SSDs), also found in AI compute systems. Both companies compete directly in the high-growth memory market that defines the ongoing capex supercycle.
According to market data from IDC, however, SK Hynix holds a clearer edge in the very markets where its peers operate. SK Hynix ranks first in HBM market share in Q1 2026 with a commanding 56.4% portion. In addition, the company is second to Samsung (OTC: SSNLF) in DRAM and NAND flash revenue market share.
Micron held about 22% of DRAM and 14% of NAND, while Sandisk also captured roughly 14% of NAND. SK Hynix’s dominant HBM position arguably makes it more central to the AI infrastructure build-out than either of its better-known U.S. counterparts.
Record results were met with a sharp pullback
SK Hynix’s second-quarter financial results underscored the company’s operational strengths. Revenue reached 79.3 trillion Korean Won, equivalent to approximately $55 billion USD. Operating profit hit 60.54 trillion Won, for a 76% margin. Management said that prices for both DRAM and NAND rose sharply quarter over quarter, with high-value products including HBM, AI-server DRAM, and enterprise SSDs driving the company’s expansion.
