TNUK

Tortoise Nuclear Renaissance ETF

Tortoise · $1.3m in assets, October 8, 2026

Owns nuclear industry companies: those earning at least half their revenue from nuclear, earlier-stage firms with no revenue yet, and companies that have publicly made nuclear energy a strategic focus.

TNUK, the Tortoise Nuclear Renaissance ETF, is a $1 million ETF whose main story is the power constraint.

TNUK · the ETFFRI OCT 2Market price total return
−11.5%Total return since launch, December 2025
−11.5%Year to date
32.4%Volatility since launch

The narrative it carries

This is its only narrative.

The power constraint →

Utilities, nuclear fuel and grid equipment: the power the AI buildout needs.

The power constraint · the narrative this week
48.2WARM level, 13 of 22
last four weeks
80ETFs carry it
77.5%held by the top five
XLUlargest holder, 32.5%
$65.6 bncapital, 16th of 22

The band is where this narrative’s level sits among the 22 this week. QUIET means less talked about, not falling.

Who owns the capital
XLU 32.5%GRID 18.1%VPU 13.0%URA 8.5%NLR 5.4%75 other ETFs 22.5%77.5%top five
#ETFSHAREASSETS1 YEARCOST
1XLU32.5%$21.33bn−6.8%0.08%
2GRID18.1%$11.87bn+20.8%0.56%
3VPU13.0%$8.52bn−7.0%0.09%
4URA8.5%$5.59bn−16.9%0.69%
5NLR5.4%$3.55bn−25.8%0.52%
75 other ETFs22.5%
TNUK: 0.0%

Share is each ETF’s slice of the capital carrying this narrative. 1 year is market price total return; cost is the expense ratio. See all 80 ETFs on the narrative page →

FRI OCT 2MARKET PRICE TOTAL RETURN

1M3MYTD1Y3Y*5Y*
TNUK−6.4%−10.0%−11.5%–––
The power constraintits narrative−4.5%−9.0%+1.4%−1.0%+20.1%+11.6%
The marketbroad US ETFs+0.8%+2.6%+14.6%+16.8%+22.9%+12.9%

1M, 3M, 1Y, 3Y, 5Y: one month to five years. YTD: year to date. * A year, annualised. A dash means the ETF has not traded for the whole period. Since it started trading on December 18, 2025: −11.5%.

$10,000 invested December 31, 2025

TNUK $8,848The power constraint $10,138The market $11,464
$0$10,000$20,000Dec 2025Jun 2026$0$10,000$20,000Dec 2025

Total return on the market price, with each distribution reinvested on its ex-date. Not the NAV return the issuer publishes; the two differ when the ETF trades above or below the value of its holdings. The narrative is the asset-weighted return of the unlevered ETFs that carry it. The market is the asset-weighted return of broad US index ETFs. Past performance is no guarantee of future results.

Common questions

What story is TNUK selling?

TNUK’s main story is the power constraint, which covers utilities, nuclear fuel and grid equipment: the power the AI buildout needs.

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Narrative figures are from the weekly board. Performance is market price total return as of October 2, 2026. Assets are StoryVector’s weekly figure. Classification and measurement. Not investment advice. How the measurement works →