# TNUK (Tortoise Nuclear Renaissance ETF)

Tortoise · Thematic ETFs · data as of Sep 11, 2026

TNUK holds 25 stocks, and 82% of its weight is outside the S&P 500.

## Key facts

- TNUK, already in the S&P 500: 17.5%, as of Sep 11, 2026.
- TNUK, active share vs the S&P 500: 99.2%, as of Sep 11, 2026.
- TNUK, top ten holdings: 61.8%, as of Sep 11, 2026.
- TNUK, total return, since launch: −5.1%, as of Sep 11, 2026.
- TNUK, net assets: $2m (SEC filing, whole fund, as filed for May 31, 2026).

## TNUK over each window to Sep 11, 2026

| Window | Total return | S&P 500 | Gap to S&P 500 | Gap to Nasdaq-100 |
| --- | --- | --- | --- | --- |
| 3 months | −4.3% | +3.3% | −7.6 pts | −3.5 pts |
| 6 months | −9.3% | +16.0% | −25.4 pts | −30.0 pts |
| Since launch | −5.1% | +13.9% | −19.0 pts | −22.9 pts |

## Every published field

| Field | Value | Source |
| --- | --- | --- |
| Theme | Nuclear and uranium | ETFIQ, editorial |
| Launched | Dec 18, 2025 | ETFIQ |
| Already in the S&P 500, by weight | 17.5% | ETFIQ |
| Active share vs the S&P 500 | 99.2% | ETFIQ |
| Already in the Nasdaq-100, by weight | 4.5% | ETFIQ |
| Active share vs the Nasdaq-100 | 99.5% | ETFIQ |
| Top ten holdings weight | 61.8% | ETFIQ |
| Holdings | 25 | ETFIQ |
| Holdings as of | May 31, 2026 | SEC N-PORT |
| Top holdings | Curtiss-Wright Corp 8.2%, Cameco Corp 7.5%, Doosan Enerbility Co Ltd 6.9%, Talen Energy Corp 6.9%, BWX Technologies Inc 6.7%, Mirion Technologies Inc 6.2%, Rolls-Royce Holdings PLC 5.1%, Uranium Energy Corp 5.0%, Public Service Enterprise Grou 4.8%, Vistra Corp 4.7% | ETFIQ |
| Net assets | $2m | SEC filing, whole fund, as filed for May 31, 2026 |
| Below its all-time high | −20.8% | ETFIQ |
| Closest funds by holdings overlap | NLR 46%, RCTR 44%, NUKZ 39%, URAN 34%, SMRF 32% | ETFIQ |

## Questions

### How much of TNUK is in S&P 500 companies?

By its holdings filed for May 31, 2026, 18% of TNUK by weight is stocks the S&P 500 already holds. Its active share against the index is 99%, so that share is the part doing something different.

### What does TNUK hold?

25 positions as filed for May 31, 2026, with the top ten at 62% of the fund. The largest are Curtiss-Wright Corp at 8.2%, Cameco Corp at 7.5%, Doosan Enerbility Co Ltd at 6.9%.

### Has TNUK beaten the S&P 500?

Over the year to Sep 11, 2026 TNUK returned −5.1% with distributions reinvested, against +13.9% for the S&P 500, so it finished behind the index by 19.0 points.


## Cite this page

ETFIQ, TNUK, data as of Sep 11, 2026. https://etfiq.com/funds/tnuk
Free to use with attribution; the underlying files are at https://etfiq.com/data/.

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