Neil Patel, The Motley Fool Thu, October 8, 2026 at 7:10 AM EDT 3 min read NVDA -0.74% Trade NVIDIA on Coinbase Trading disclosure Trading disclosure The above button links to Coinbase. Yahoo Finance is not a broker-dealer or investment adviser and does not offer securities or cryptocurrencies for sale or facilitate trading. Coinbase pays us for certain activity generated through this link. Prices displayed are informational.
Nvidia (NASDAQ: NVDA) shares have risen by 29% in 2026 (as of Oct. 5). This continues a monster winning streak that has seen the shares increase by more than 1,110% over the past five years, catapulting the business to a $5.8 trillion market capitalization.
There's one obvious reason this artificial intelligence (AI) stock is a screaming buy in October. There's also one reason to be wary.
Missed AI's "Act 1"? Act 2 Could Be 14x Bigger. Most investors think they missed the AI boat because they didn't buy Nvidia in 2005. But according to our analysts, we're only at the end of "Act 1"—the R&D phase. "Act 2" is the global rollout. Continue »
Valuation is one reason why Nvidia looks like a no-brainer buying opportunity this month. Shares currently trade at a forward price-to-earnings ratio of 24.9. This is what the market is asking you to pay for a dominant business that posted year-over-year revenue and net income growth of 106% and 126%, respectively, in the most recent fiscal quarter (Q2 2027 ended July 26).
The ongoing AI build-out, measured by the five big hyperscalers on track to easily exceed $1 trillion in capital expenditures in 2027, is unprecedented. Nvidia has gained the most financially from this surge in spending.
It's also wise for investors to be a bit cautious, however. No one has the slightest idea about how long this AI build-out boom will last. Durability is the biggest unknown variable. If the hyperscalers don't see adequate returns on invested capital, the impact will be felt up the value chain. Demand for Nvidia's graphics processing units would be under pressure, which would adversely affect the stock price.
The market isn't forgiving when it comes to decelerating growth trends.
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Neil Patel has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Nvidia. The Motley Fool has a disclosure policy.
1 Reason Nvidia Is a Screaming Buy in October, and 1 Reason Investors Should Be Cautious was originally published by The Motley Fool
