TNUK vs. TBLU

Last updated Jun 23, 2026

TNUK (Tortoise Nuclear Renaissance ETF) and TBLU (Tortoise Global Water Fund) are both exchange-traded funds - TNUK is a Energy Equities fund actively managed by Tortoise, while TBLU is a Water Equities fund tracking the Tortoise Global Water ESG Net Total Return Index. TNUK is actively managed, while TBLU is passively managed. A 0.55 correlation means they provide meaningful diversification when combined. TNUK charges 0.75%/yr vs 0.40%/yr for TBLU.

Performance

TNUK vs. TBLU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Tortoise Nuclear Renaissance ETF (TNUK) and Tortoise Global Water Fund (TBLU). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TNUK achieves a 4.83% return, which is significantly higher than TBLU's -0.26% return.

TNUK

• 1D: 0.02%
• 1M: 1.01%
• YTD: 4.83%
• 6M: 2.14%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

TBLU

• 1D: -0.56%
• 1M: 1.47%
• YTD: -0.26%
• 6M: -1.53%
• 1Y: 1.43%
• 3Y*: 9.90%
• 5Y*: 4.45%
• 10Y*: —

*Multi-year figures are annualized to reflect compound growth (CAGR)

TNUK vs. TBLU - Yearly Performance Comparison

	2026 (YTD)	2025
TNUK Tortoise Nuclear Renaissance ETF	4.83%	0.34%
TBLU Tortoise Global Water Fund	-0.26%	-0.29%

Correlation

The correlation between TNUK and TBLU is 0.55, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (All Time) Calculated using the full available price history since Dec 18, 2025	0.55

TNUK vs. TBLU - Sectors Allocation Comparison

Sectors	TNUK	TBLU
Industrials	47.8%	65.7%
Utilities	28.6%	24.1%
Energy	23.4%	0.5%
Basic Materials	0.1%	7.4%
Technology	0.1%	0.6%
Communication Services	-	-
Consumer Cyclical	-	0.7%
Consumer Defensive	-	1.0%
Financial Services	-	-
Healthcare	-	-
Real Estate	-	-

Return for Risk

TNUK vs. TBLU — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

TNUK

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

TBLU

TBLU Risk / Return Rank: 9
TBLU Sharpe Ratio Rank: 10
TBLU Sortino Ratio Rank: 9
TBLU Omega Ratio Rank: 9
TBLU Calmar Ratio Rank: 10
TBLU Martin Ratio Rank: 9

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

TNUK vs. TBLU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Tortoise Nuclear Renaissance ETF (TNUK) and Tortoise Global Water Fund (TBLU). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	TNUK	TBLU	Difference
Sharpe ratio: Return per unit of total volatility	—	0.10	—
Sortino ratio: Return per unit of downside risk	—	0.24	—
Omega ratio: Gain probability vs. loss probability	—	1.03	—
Calmar ratio: Return relative to maximum drawdown	—	0.11	—
Martin ratio: Return relative to average drawdown	—	0.24	—

Drawdowns

TNUK vs. TBLU - Drawdown Comparison

The maximum TNUK drawdown since its inception was -21.57%, smaller than the maximum TBLU drawdown of -37.58%. Use the drawdown chart below to compare losses from any high point for TNUK and TBLU.

Drawdown Indicators

	TNUK	TBLU	Difference
Max Drawdown Largest peak-to-trough decline	-21.57%	-37.58%	+16.01%
Max Drawdown (1Y) Largest decline over 1 year	—	-13.17%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-15.42%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-35.36%	—
Current Drawdown Current decline from peak	-12.47%	-10.09%	-2.38%
Average Drawdown Average peak-to-trough decline	-8.44%	-8.16%	-0.28%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	5.94%	—

Volatility

Volatility by Period

	TNUK	TBLU	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	4.32%	—
Volatility (6M) Calculated over the trailing 6-month period	—	11.77%	—
Volatility (1Y) Calculated over the trailing 1-year period	34.83%	14.74%	+20.09%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	34.83%	17.35%	+17.48%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	34.83%	18.95%	+15.88%

TNUK vs. TBLU - Expense Ratio Comparison

TNUK has a 0.75% expense ratio, which is higher than TBLU's 0.40% expense ratio.

Dividends

TNUK vs. TBLU - Dividend Comparison

TNUK has not paid dividends to shareholders, while TBLU's dividend yield for the trailing twelve months is around 3.31%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
TBLU Tortoise Global Water Fund	3.31%	3.31%	1.34%	1.46%	1.64%	1.55%	1.42%	1.58%	1.35%	1.32%
TNUK Tortoise Nuclear Renaissance ETF	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both TNUK and TBLU in my portfolio?

TNUK and TBLU have a correlation of 0.55, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, TNUK or TBLU?

On fees, TBLU is cheaper at 0.40% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, TNUK or TBLU?

TBLU is cheaper with a 0.40% expense ratio, compared with 0.75% for TNUK.

Which ETF pays a higher dividend yield, TNUK or TBLU?

TBLU has the higher dividend yield at 3.31%, compared with 0.00% for TNUK.

What is the main difference between TNUK and TBLU?

TNUK is categorized as Energy Equities, while TBLU is Water Equities. Their fees differ too: 0.75% for TNUK and 0.40% for TBLU.