Shares of Nebius (NBIS) rose more than 4% on Sept. 17 after a leaked pricing update reported that customers will soon pay much more for computing power. Valued at a market capitalization of $58.9 billion, Nebius is an artificial intelligence (AI) infrastructure company.
NBIS stock has more than doubled over the past 12 months, rising 122%, while shares have also climbed an impressive 182% on a year-to-date (YTD) basis. Is Nebius a good stock to own right now despite its lofty valuation in September 2026? Let's take a closer look.