What if you invested $1,000 in SanDisk a year ago? Checking your current bank balance

▲ SanDisk (NASDAQ: SNDK)/Source: X ©

A $1,000 investment in the memory semiconductor company SanDisk (SNDK) a year ago has now surpassed $40,000, drawing attention as one of the biggest beneficiaries of the artificial intelligence (AI) hardware boom. SanDisk has continued its relentless surge since spinning off from Western Digital (WDC) in early 2025, establishing itself as one of the best-performing stocks over the past 12 months.

According to the cryptocurrency media outlet Finbold on July 6 (local time), SanDisk's stock, which was trading at $45.22 on July 7, 2025, reached $1,810.88 in pre-market trading on July 6, 2026, recording an astonishing increase of 3,904.6%. As a result, an investor who put in $1,000 last summer could have earned a profit of $39,046, increasing their total asset value to $40,046. This figure significantly outperforms the $1,201 gained from investing in an S&P 500 index fund or the $1,234.20 from investing in Nvidia (NVDA), which showed industry-leading growth during the same period.

This explosive rally is due to a shift in the epicenter of the AI boom. While the market dominance of semiconductor manufacturing itself has somewhat weakened, investor interest has rapidly shifted to the memory sector, which is essential hardware for data centers. In this process, not only SanDisk but also its former parent company Western Digital surged by 765.16% over one year, and Micron (MU) also soared by 736.96%, leading to a strong collective rise across the memory and storage industry.

However, the high dependence on the AI craze has acted as a risk of a short-term correction in July 2026. Debates over the costs and benefits of technology adoption have intensified, and market sentiment has been somewhat shaken by changes in the supply-demand balance, such as Meta Platforms (META)'s decision to lease capacity. As a result, SanDisk's stock price has fallen by about 25% from its June high of $2,335, but it still maintains a gain of over 6% on a monthly chart basis.

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