TNUK vs. BESF

Last updated Jun 23, 2026

TNUK (Tortoise Nuclear Renaissance ETF) and BESF (Bastion Energy ETF) are both Energy Equities funds. Both are actively managed. At a correlation of -0.05, they often move in opposite directions. TNUK charges 0.75%/yr vs 0.80%/yr for BESF.

Performance

TNUK vs. BESF - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Tortoise Nuclear Renaissance ETF (TNUK) and Bastion Energy ETF (BESF). 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 lower than BESF's 14.96% return.

TNUK

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

BESF

• 1D: 1.49%
• 1M: -7.22%
• YTD: 14.96%
• 6M: 14.44%
• 1Y: 56.15%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

TNUK vs. BESF - Yearly Performance Comparison

	2026 (YTD)	2025
TNUK Tortoise Nuclear Renaissance ETF	4.83%	0.34%
BESF Bastion Energy ETF	14.96%	3.98%

Correlation

The correlation between TNUK and BESF is -0.05, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (All Time) Calculated using the full available price history since Dec 18, 2025	-0.05

Return for Risk

TNUK vs. BESF — 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.

BESF

BESF Risk / Return Rank: 75
BESF Sharpe Ratio Rank: 74
BESF Sortino Ratio Rank: 71
BESF Omega Ratio Rank: 64
BESF Calmar Ratio Rank: 89
BESF Martin Ratio Rank: 77

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. BESF - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Tortoise Nuclear Renaissance ETF (TNUK) and Bastion Energy ETF (BESF). 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	BESF	Difference
Sharpe ratio: Return per unit of total volatility	—	2.28	—
Sortino ratio: Return per unit of downside risk	—	3.08	—
Omega ratio: Gain probability vs. loss probability	—	1.37	—
Calmar ratio: Return relative to maximum drawdown	—	5.14	—
Martin ratio: Return relative to average drawdown	—	14.33	—

Drawdowns

TNUK vs. BESF - Drawdown Comparison

The maximum TNUK drawdown since its inception was -21.57%, which is greater than BESF's maximum drawdown of -10.97%. Use the drawdown chart below to compare losses from any high point for TNUK and BESF.

Drawdown Indicators

	TNUK	BESF	Difference
Max Drawdown Largest peak-to-trough decline	-21.57%	-10.97%	-10.60%
Max Drawdown (1Y) Largest decline over 1 year	—	-10.97%	—
Current Drawdown Current decline from peak	-12.47%	-9.64%	-2.83%
Average Drawdown Average peak-to-trough decline	-8.44%	-2.72%	-5.72%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	3.93%	—

Volatility

Volatility by Period

	TNUK	BESF	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	6.87%	—
Volatility (6M) Calculated over the trailing 6-month period	—	14.94%	—
Volatility (1Y) Calculated over the trailing 1-year period	34.83%	24.78%	+10.05%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	34.83%	24.42%	+10.41%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	34.83%	24.42%	+10.41%

TNUK vs. BESF - Expense Ratio Comparison

TNUK has a 0.75% expense ratio, which is lower than BESF's 0.80% expense ratio.

Dividends

TNUK vs. BESF - Dividend Comparison

TNUK has not paid dividends to shareholders, while BESF's dividend yield for the trailing twelve months is around 5.92%.

Position	TTM	2025
BESF Bastion Energy ETF	5.92%	6.39%
TNUK Tortoise Nuclear Renaissance ETF	0.00%	0.00%

Frequently Asked Questions

Can I hold both TNUK and BESF in my portfolio?

TNUK and BESF have a correlation of -0.05, 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 BESF?

On fees, TNUK is cheaper at 0.75% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, TNUK or BESF?

TNUK is cheaper with a 0.75% expense ratio, compared with 0.80% for BESF.

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

BESF has the higher dividend yield at 5.92%, compared with 0.00% for TNUK.

What is the main difference between TNUK and BESF?

They also come from different issuers: Tortoise and Bastion. Their fees differ too: 0.75% for TNUK and 0.80% for BESF.