NuScale Power is one of the more recognizable nuclear stocks thanks to its NRC-approved designs.
Several Ark Invest ETFs bought two nuclear stocks on Tuesday and Wednesday.
For those interested in mitigating risk, buying nuclear ETFs is a smart strategy.
Nuclear energy investors are well aware of the allure of NuScale Power. The company has a clear advantage over its small modular reactor (SMR) peers as the only company with a design approved by the U.S. Nuclear Regulatory Commission (NRC).
That hasn't impressed Cathie Wood much. While NuScale Power appears in numerous exchange-traded funds, none of the Ark Invest ETFs count the SMR maker as one of their holdings.
Missed AI’s "Act 1"? Act 2 Could Be 15x 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 »
But that's not to say that Ark Invest is completely averse to nuclear energy. In fact, several of its ETFs recently loaded up on shares of two prominent nuclear stocks.
Cathie Wood, CEO of Ark Investment Management. Image source: Getty Images.
Shining brightly on the Ark Invest radar, shares of SMR designer and nuclear fuel producer X-Energy (NASDAQ: XE) found their way into the Ark Innovation ETF (NYSEMKT: ARKK) on Tuesday, Oct. 22, when the fund picked up 292,022 shares. On the same day, the Ark Autonomous Tech & Robotics ETF (NYSEMKT: ARKQ) bought 126,437 shares, and the Ark Space & Defense Innovation ETF (NYSEMKT: ARKX) picked up 66,436 shares. Assuming these ETFs bought X-Energy stock at the average of its high and low on Tuesday -- $10.48 -- the Ark Invest funds invested about $5.1 million in total.
The buying spree continued on Wednesday as well, with the Ark Autonomous Tech & Robotics ETF and Ark Space & Defense Innovation ETF adding 134,201 and 66,146 shares, respectively -- valued at about $2.2 million.
Not as substantial as the buys of X-Energy, Oklo stock also popped up on Ark Invest's buy list. On Tuesday, the Ark Autonomous Tech. & Robotics ETF picked up 150,998 shares. With Oklo stock trading between $26.36 and $28.20, Ark Invest's purchase was valued at around $4.1 million.
While Cathie Wood's endorsement of both X-Energy and Oklo is noteworthy, there's rampant risk in blindly following other investors' buying activity. On their merits, though, X-Energy and Oklo stocks are certainly worth considering for those seeking exposure to nuclear energy.
As X-Energy advances construction of its nuclear fuel production facility, it offers an opportunity that extends beyond SMR development. Similarly, Oklo is developing its own nuclear fuel recycling business and an isotope production facility, broadening the company's reach beyond SMRs.
Because neither X-Energy nor Oklo haven't commenced commercial operations for their SMRs, both stocks represent a higher degree of risk. For investors eager to gain exposure to these stocks while mitigating risk, investing in either the Ark Invest funds that have them among their holdings or a nuclear energy ETF that includes them is a smart choice.
Before you buy stock in X-Energy, consider this:
The Motley Fool Stock Advisor analyst team just identified what they believe are the 10 best stocks for investors to buy now… and X-Energy wasn’t one of them. The 10 stocks that made the cut could produce monster returns in the coming years.
Consider when Netflix made this list on December 17, 2004... if you invested $1,000 at the time of our recommendation, you’d have $355,124!* Or when Nvidia made this list on April 15, 2005... if you invested $1,000 at the time of our recommendation, you’d have $1,296,254!*
Now, it’s worth noting Stock Advisor’s total average return is 901% — a market-crushing outperformance compared to 210% for the S&P 500. Don't miss the latest top 10 list, available with Stock Advisor, and join an investing community built by individual investors for individual investors.
See the 10 stocks »
*Stock Advisor returns as of October 25, 2026.
Scott Levine has no position in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.