TNGY vs. DFNM

Last updated Jun 4, 2026

TNGY (Tortoise Energy Fund) and DFNM (Dimensional National Municipal Bond ETF) are both exchange-traded funds - TNGY is a Energy Equities fund actively managed by Tortoise Capital, while DFNM is a Municipal Bonds fund actively managed by Dimensional. Both are actively managed. At a correlation of -0.21, they often move in opposite directions. TNGY charges 0.85%/yr vs 0.17%/yr for DFNM.

Performance

TNGY vs. DFNM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Tortoise Energy Fund (TNGY) and Dimensional National Municipal Bond ETF (DFNM). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TNGY achieves a 15.21% return, which is significantly higher than DFNM's 1.29% return.

TNGY

• 1D: 0.39%
• 1M: -3.15%
• YTD: 15.21%
• 6M: 12.60%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

DFNM

• 1D: 0.02%
• 1M: 0.42%
• YTD: 1.29%
• 6M: 1.71%
• 1Y: 5.29%
• 3Y*: 3.40%
• 5Y*: —
• 10Y*: —

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

TNGY vs. DFNM - Yearly Performance Comparison

	2026 (YTD)	2025
TNGY Tortoise Energy Fund	15.21%	1.81%
DFNM Dimensional National Municipal Bond ETF	1.29%	3.90%

Correlation

The correlation between TNGY and DFNM is -0.21, 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 Jun 17, 2025	-0.21

Return for Risk

TNGY vs. DFNM — Risk / Return Rank

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

DFNM

DFNM Risk / Return Rank: 79
DFNM Sharpe Ratio Rank: 89
DFNM Sortino Ratio Rank: 91
DFNM Omega Ratio Rank: 94
DFNM Calmar Ratio Rank: 59
DFNM Martin Ratio Rank: 59

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.

TNGY vs. DFNM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Tortoise Energy Fund (TNGY) and Dimensional National Municipal Bond ETF (DFNM). 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.

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

Sharpe Ratios by Period

	TNGY	DFNM	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	3.03	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.15	0.57	+0.58

Drawdowns

TNGY vs. DFNM - Drawdown Comparison

The maximum TNGY drawdown since its inception was -8.86%, which is greater than DFNM's maximum drawdown of -6.99%. Use the drawdown chart below to compare losses from any high point for TNGY and DFNM.

Drawdown Indicators

	TNGY	DFNM	Difference
Max Drawdown Largest peak-to-trough decline	-8.86%	-6.99%	-1.87%
Max Drawdown (1Y) Largest decline over 1 year	—	-1.84%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-2.82%	—
Current Drawdown Current decline from peak	-3.92%	-0.36%	-3.56%
Average Drawdown Average peak-to-trough decline	-2.18%	-1.96%	-0.22%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.51%	—

Volatility

Volatility by Period

	TNGY	DFNM	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.58%	—
Volatility (6M) Calculated over the trailing 6-month period	—	1.29%	—
Volatility (1Y) Calculated over the trailing 1-year period	15.70%	1.75%	+13.95%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.70%	2.54%	+13.16%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.70%	2.54%	+13.16%

TNGY vs. DFNM - Expense Ratio Comparison

TNGY has a 0.85% expense ratio, which is higher than DFNM's 0.17% expense ratio.

Dividends

TNGY vs. DFNM - Dividend Comparison

TNGY's dividend yield for the trailing twelve months is around 3.41%, more than DFNM's 2.89% yield.

Position	TTM	2025	2024	2023	2022	2021
DFNM Dimensional National Municipal Bond ETF	2.89%	2.94%	2.74%	2.39%	1.16%	0.05%
TNGY Tortoise Energy Fund	3.41%	2.59%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both TNGY and DFNM in my portfolio?

TNGY and DFNM have a correlation of -0.21, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, TNGY or DFNM?

On fees, DFNM is cheaper at 0.17% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, TNGY or DFNM?

DFNM is cheaper with a 0.17% expense ratio, compared with 0.85% for TNGY.

Which ETF pays a higher dividend yield, TNGY or DFNM?

TNGY has the higher dividend yield at 3.41%, compared with 2.89% for DFNM.

What is the main difference between TNGY and DFNM?

TNGY is categorized as Energy Equities, while DFNM is Municipal Bonds. They also come from different issuers: Tortoise Capital and Dimensional. Their fees differ too: 0.85% for TNGY and 0.17% for DFNM.