OILT vs. TNGY

Last updated Jul 15, 2026

OILT (Texas Capital Texas Oil Index ETF) and TNGY (Tortoise Energy Fund) are both Energy Equities funds. OILT is passively managed, while TNGY is actively managed. Over the past year, OILT returned 29.87% vs 17.75% for TNGY. A 0.65 correlation means they provide meaningful diversification when combined. OILT charges 0.35%/yr vs 0.85%/yr for TNGY.

Performance

OILT vs. TNGY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Texas Capital Texas Oil Index ETF (OILT) and Tortoise Energy Fund (TNGY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, OILT achieves a 26.02% return, which is significantly higher than TNGY's 16.15% return.

OILT

• 1D: -0.19%
• 1M: -3.37%
• 6M: 23.34%
• YTD: 26.02%
• 1Y: 29.87%
• 3Y*: —
• 5Y*: —
• 10Y*: —

TNGY

• 1D: 0.20%
• 1M: 3.22%
• 6M: 16.15%
• YTD: 16.15%
• 1Y: 17.75%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

OILT vs. TNGY - Yearly Performance Comparison

	2026 (YTD)	2025
OILT Texas Capital Texas Oil Index ETF	26.02%	-0.86%
TNGY Tortoise Energy Fund	16.15%	-2.37%

Correlation

The correlation between OILT and TNGY is 0.69, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.69
Correlation (All Time) Calculated using the full available price history since Jun 16, 2025	0.65

The correlation between OILT and TNGY has been stable across timeframes, ranging from 0.65 to 0.69 - a consistent structural relationship.

Return for Risk

OILT vs. TNGY — Risk / Return Rank

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

OILT

OILT Risk / Return Rank: 35
OILT Sharpe Ratio Rank: 37
OILT Sortino Ratio Rank: 36
OILT Omega Ratio Rank: 33
OILT Calmar Ratio Rank: 35
OILT Martin Ratio Rank: 33

TNGY

TNGY Risk / Return Rank: 38
TNGY Sharpe Ratio Rank: 37
TNGY Sortino Ratio Rank: 35
TNGY Omega Ratio Rank: 34
TNGY Calmar Ratio Rank: 44
TNGY Martin Ratio Rank: 38

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.

OILT vs. TNGY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Texas Capital Texas Oil Index ETF (OILT) and Tortoise Energy Fund (TNGY). 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.

	OILT	TNGY	Difference
Sharpe ratio: Return per unit of total volatility	1.08	1.09	-0.02
Sortino ratio: Return per unit of downside risk	1.56	1.54	+0.02
Omega ratio: Gain probability vs. loss probability	1.19	1.19	0.00
Calmar ratio: Return relative to maximum drawdown	1.45	1.82	-0.37
Martin ratio: Return relative to average drawdown	3.96	4.81	-0.85

OILT vs. TNGY - Sharpe Ratio Comparison

The current OILT Sharpe Ratio is 1.08, which is comparable to the TNGY Sharpe Ratio of 1.09. The chart below compares the historical Sharpe Ratios of OILT and TNGY, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

OILT vs. TNGY - Drawdown Comparison

The maximum OILT drawdown since its inception was -35.21%, which is greater than TNGY's maximum drawdown of -9.79%. Use the drawdown chart below to compare losses from any high point for OILT and TNGY.

Drawdown Indicators

	OILT	TNGY	Difference
Max Drawdown Largest peak-to-trough decline	-35.21%	-9.79%	-25.42%
Max Drawdown (1Y) Largest decline over 1 year	-20.72%	-9.79%	-10.93%
Current Drawdown Current decline from peak	-14.95%	-3.13%	-11.82%
Average Drawdown Average peak-to-trough decline	-13.04%	-3.75%	-9.29%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.58%	3.71%	+3.87%

Volatility

OILT vs. TNGY - Volatility Comparison

Texas Capital Texas Oil Index ETF (OILT) has a higher volatility of 8.20% compared to Tortoise Energy Fund (TNGY) at 5.24%. This indicates that OILT's price experiences larger fluctuations and is considered to be riskier than TNGY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OILT	TNGY	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.20%	5.24%	+2.96%
Volatility (6M) Calculated over the trailing 6-month period	21.29%	13.17%	+8.12%
Volatility (1Y) Calculated over the trailing 1-year period	27.93%	16.32%	+11.61%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	28.73%	16.50%	+12.23%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	28.73%	16.50%	+12.23%

OILT vs. TNGY - Expense Ratio Comparison

OILT has a 0.35% expense ratio, which is lower than TNGY's 0.85% expense ratio.

Dividends

OILT vs. TNGY - Dividend Comparison

OILT's dividend yield for the trailing twelve months is around 2.72%, less than TNGY's 4.57% yield.

Position	TTM	2025	2024
OILT Texas Capital Texas Oil Index ETF	2.72%	3.12%	2.63%
TNGY Tortoise Energy Fund	4.57%	2.59%	0.00%

Frequently Asked Questions

Can I hold both OILT and TNGY in my portfolio?

OILT and TNGY have a correlation of 0.69, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, OILT or TNGY?

OILT has higher volatility (8.20%) compared to TNGY (5.24%). In terms of maximum drawdown, OILT dropped -35.21% vs TNGY's -9.79%.

Which ETF is better, OILT or TNGY?

On 1-year performance, OILT leads with 29.87% vs 17.75% for TNGY. On fees, OILT is cheaper at 0.35% per year. On volatility, TNGY has been the lower-risk option at 5.24%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, OILT or TNGY?

Over the 1-year period, OILT has performed better with a 29.87% return vs 17.75%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, OILT or TNGY?

OILT is cheaper with a 0.35% expense ratio, compared with 0.85% for TNGY.

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

TNGY has the higher dividend yield at 4.57%, compared with 2.72% for OILT.

What is the main difference between OILT and TNGY?

They also come from different issuers: Texas Capital and Tortoise Capital. Their fees differ too: 0.35% for OILT and 0.85% for TNGY.

Which has better risk-adjusted returns?

TNGY currently has the higher Sharpe Ratio (1.09 vs 1.08), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.