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Of all the ways to invest in artificial intelligence, the infrastructure that supports it seems to be one of the most lucrative right now. In fact, of the five best-performing stocks in the Nasdaq 100 Index ($IUXX) so far this year, four of them work directly in the AI infrastructure space – Sandisk (SNDK), up 513%, Seagate Technology (STX), up 197%, Western Digital (WDC), up 187%, and Micron Technology (MU), up 180%.
Data center real estate investment trusts (REITs) are also appealing, handily outperforming the Nasdaq-100. Digital Realty Trust (DLR) is up 25% so far this year, and Equinix (EQIX) jumped 41%, both topping the index return of 16% in 2026.