What this ETF is trying to do

The Tortoise Nuclear Renaissance ETF (TNUK) is an exchange-traded fund that focuses on the nuclear energy sector. It holds a variety of companies involved in nuclear power and related technologies.

What the numbers show

As of October 5, 2026, the share price of TNUK was $22.25.

Looking at the performance for the current year (Year-to-Date), the ETF has seen a share-price decline. The YTD price return is -10.65%. Because there have been no distributions, the YTD total return is also -10.65%.

Data for one-year and three-year returns was not supplied.

Top Holdings

The fund holds a total of 27 assets. Because the list provided is partial, these are the Top Holdings as of October 7, 2026:

• Doosan Enerbility Co Ltd: 8.06%

• Mirion Technologies Inc: 7.72%

• Cameco Corp: 7.06%

• Curtiss-Wright Corp: 6.78%

• BWX Technologies Inc: 6.54%

• AtkinsRealis Group Inc: 6.11%

• Rolls-Royce Holdings PLC ADR: 5.96%

• Fortum Oyj: 5.65%

• Constellation Energy Corp: 5.57%

• Amentum Holdings Inc: 5.17%

Income and distribution explanation

Some investors use ETFs to earn regular cash payments, called distributions. However, TNUK has a distribution yield of 0%. No distributions were detected, and there were zero payouts in the last 12 months. It has an income rating grade of "F."

NAV Erosion Explanation

"NAV erosion" happens when the net asset value of a fund declines over time, which can eat away at an investor's principal. While the share price has declined this year, the severe erosion-risk flag for this ETF is false. Additionally, an erosion score was not provided because there is insufficient verified price history.

Pros

• Provides exposure to a wide range of nuclear energy companies.

• No severe erosion-risk flag is currently active.

Cons

• The share price has declined by 10.65% so far this year.

• It does not provide any cash income or distributions to investors.

Beginner takeaway

TNUK is a way to invest in the nuclear energy industry without buying individual stocks. It is important for beginners to remember that a high distribution yield is not the only way to measure a fund, but in this case, there is no yield at all. Investors should focus on the price return and the stability of the companies the fund holds.