Key Points

Sandisk and Micron are both memory chip producers.
Both companies are seeing rapid growth.
The stocks do not look overvalued.
10 stocks we like better than Sandisk

Two standout performers among equities during the past year include Micron and Sandisk. Micron shares advanced an impressive 860 percent, a result that would satisfy most investors. Yet Sandisk delivered an even more striking gain of 4,160 percent. An initial 10,000-dollar stake in Sandisk one year earlier would now equal roughly 425,000 dollars.

Such steep climbs naturally prompt questions about whether a bubble has formed. After reviewing core business metrics, however, the evidence points away from bubble conditions. Both firms appear positioned for additional gains in coming years.

A shortage of memory chips continues to lift results for these producers. Micron and Sandisk each manufacture memory components, with DRAM serving as working memory alongside processors and NAND providing longer-term storage in solid-state drives. Micron supplies both varieties while Sandisk concentrates on NAND. Demand exceeds available supply across these categories, pushing prices higher in line with basic supply-and-demand dynamics.

Micron indicated it can satisfy only half to two-thirds of projected medium-term demand. The company also forecasts the high-bandwidth memory market expanding from 35 billion dollars in 2025 to 100 billion dollars by 2028. Sandisk likewise reports tight supply and anticipates sustained data-center expansion supporting future results.

In recent quarters Sandisk posted 251 percent year-over-year revenue growth and Micron recorded 196 percent growth. These figures highlight robust demand yet leave open the question of valuation.

Forward price-to-earnings ratios for both companies remain reasonable, and multiples based on next-year earnings appear attractive. This reduces immediate valuation concerns. The memory sector is known for cyclical swings, so the duration of the current upswing remains uncertain. Data-center construction trends suggest the expansion phase could extend several more years, supporting continued growth at measured valuations rather than bubble-like conditions.

Should investors consider Sandisk shares at present?

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Stock Advisor returns as of May 31, 2026. Keithen Drury holds no positions in the mentioned securities. The Motley Fool maintains a position in and recommends Micron Technology. The Motley Fool maintains a disclosure policy.

The views and opinions expressed are those of the author and do not necessarily reflect those of Nasdaq, Inc.