TNUK vs. MDST

Last updated Jul 12, 2026

TNUK (Tortoise Nuclear Renaissance ETF) and MDST (Westwood Salient Enhanced Midstream Income ETF) are both Energy Equities funds. Both are actively managed. At a correlation of -0.13, they often move in opposite directions. TNUK charges 0.75%/yr vs 0.80%/yr for MDST.

Performance

TNUK vs. MDST - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Tortoise Nuclear Renaissance ETF (TNUK) and Westwood Salient Enhanced Midstream Income ETF (MDST). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TNUK achieves a -2.15% return, which is significantly lower than MDST's 16.87% return.

TNUK

• 1D: 0.60%
• 1M: -1.31%
• 6M: -11.64%
• YTD: -2.15%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

MDST

• 1D: -0.31%
• 1M: 1.05%
• 6M: 17.75%
• YTD: 16.87%
• 1Y: 21.14%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

TNUK vs. MDST - Yearly Performance Comparison

	2026 (YTD)	2025
TNUK Tortoise Nuclear Renaissance ETF	-2.15%	0.34%
MDST Westwood Salient Enhanced Midstream Income ETF	16.87%	1.77%

Correlation

The correlation between TNUK and MDST is -0.13, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (All Time) Calculated using the full available price history since Dec 18, 2025	-0.13

TNUK vs. MDST - Sectors Allocation Comparison

Sectors	TNUK	MDST
Industrials	47.8%	0.9%
Utilities	28.6%	-
Energy	23.4%	97.3%
Basic Materials	0.1%	-
Technology	0.1%	-
Communication Services	-	-
Consumer Cyclical	-	-
Consumer Defensive	-	-
Financial Services	-	-
Healthcare	-	-
Real Estate	-	-

Return for Risk

TNUK vs. MDST — 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.

MDST

MDST Risk / Return Rank: 67
MDST Sharpe Ratio Rank: 65
MDST Sortino Ratio Rank: 68
MDST Omega Ratio Rank: 64
MDST Calmar Ratio Rank: 78
MDST Martin Ratio Rank: 61

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. MDST - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Tortoise Nuclear Renaissance ETF (TNUK) and Westwood Salient Enhanced Midstream Income ETF (MDST). 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	MDST	Difference
Sharpe ratio: Return per unit of total volatility	—	1.70	—
Sortino ratio: Return per unit of downside risk	—	2.48	—
Omega ratio: Gain probability vs. loss probability	—	1.31	—
Calmar ratio: Return relative to maximum drawdown	—	3.21	—
Martin ratio: Return relative to average drawdown	—	8.60	—

Drawdowns

TNUK vs. MDST - Drawdown Comparison

The maximum TNUK drawdown since its inception was -21.57%, which is greater than MDST's maximum drawdown of -14.19%. Use the drawdown chart below to compare losses from any high point for TNUK and MDST.

Drawdown Indicators

	TNUK	MDST	Difference
Max Drawdown Largest peak-to-trough decline	-21.57%	-14.19%	-7.38%
Max Drawdown (1Y) Largest decline over 1 year	—	-6.74%	—
Current Drawdown Current decline from peak	-18.30%	-1.91%	-16.39%
Average Drawdown Average peak-to-trough decline	-9.25%	-2.20%	-7.05%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	2.51%	—

Volatility

Volatility by Period

	TNUK	MDST	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	4.43%	—
Volatility (6M) Calculated over the trailing 6-month period	—	8.92%	—
Volatility (1Y) Calculated over the trailing 1-year period	33.96%	12.70%	+21.26%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	33.96%	16.10%	+17.86%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	33.96%	16.10%	+17.86%

TNUK vs. MDST - Expense Ratio Comparison

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

Dividends

TNUK vs. MDST - Dividend Comparison

TNUK has not paid dividends to shareholders, while MDST's dividend yield for the trailing twelve months is around 9.24%.

Position	TTM	2025	2024
MDST Westwood Salient Enhanced Midstream Income ETF	9.24%	10.22%	6.60%
TNUK Tortoise Nuclear Renaissance ETF	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both TNUK and MDST in my portfolio?

TNUK and MDST have a correlation of -0.13, 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 MDST?

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 MDST?

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

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

MDST has the higher dividend yield at 9.24%, compared with 0.00% for TNUK.

What is the main difference between TNUK and MDST?

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