CGUI vs. TNGY

Last updated Jun 24, 2026

CGUI (Capital Group Ultra Short Income ETF) and TNGY (Tortoise Energy Fund) are both exchange-traded funds - CGUI is a Ultrashort Bond fund actively managed by Capital Group, while TNGY is a Energy Equities fund actively managed by Tortoise Capital. Both are actively managed. Over the past year, CGUI returned 4.21% vs 12.82% for TNGY. At a correlation of -0.10, they often move in opposite directions. CGUI charges 0.18%/yr vs 0.85%/yr for TNGY.

Performance

CGUI vs. TNGY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Capital Group Ultra Short Income ETF (CGUI) 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, CGUI achieves a 1.64% return, which is significantly lower than TNGY's 10.84% return.

CGUI

• 1D: 0.06%
• 1M: 0.31%
• YTD: 1.64%
• 6M: 1.76%
• 1Y: 4.21%
• 3Y*: —
• 5Y*: —
• 10Y*: —

TNGY

• 1D: 0.92%
• 1M: -5.44%
• YTD: 10.84%
• 6M: 11.42%
• 1Y: 12.82%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

CGUI vs. TNGY - Yearly Performance Comparison

	2026 (YTD)	2025
CGUI Capital Group Ultra Short Income ETF	1.64%	2.73%
TNGY Tortoise Energy Fund	10.84%	-2.37%

Correlation

The correlation between CGUI and TNGY is -0.09, 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 (1Y) Calculated over the trailing 1-year period	-0.09
Correlation (All Time) Calculated using the full available price history since Jun 16, 2025	-0.10

Return for Risk

CGUI vs. TNGY — Risk / Return Rank

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

CGUI

CGUI Risk / Return Rank: 99
CGUI Sharpe Ratio Rank: 98
CGUI Sortino Ratio Rank: 99
CGUI Omega Ratio Rank: 98
CGUI Calmar Ratio Rank: 99
CGUI Martin Ratio Rank: 99

TNGY

TNGY Risk / Return Rank: 25
TNGY Sharpe Ratio Rank: 24
TNGY Sortino Ratio Rank: 22
TNGY Omega Ratio Rank: 22
TNGY Calmar Ratio Rank: 28
TNGY Martin Ratio Rank: 29

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.

CGUI vs. TNGY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Capital Group Ultra Short Income ETF (CGUI) 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.

	CGUI	TNGY	Difference
Sharpe ratio: Return per unit of total volatility	5.78	0.80	+4.97
Sortino ratio: Return per unit of downside risk	10.40	1.15	+9.25
Omega ratio: Gain probability vs. loss probability	2.56	1.14	+1.41
Calmar ratio: Return relative to maximum drawdown	23.82	1.31	+22.51
Martin ratio: Return relative to average drawdown	99.46	3.85	+95.61

CGUI vs. TNGY - Sharpe Ratio Comparison

The current CGUI Sharpe Ratio is 5.78, which is higher than the TNGY Sharpe Ratio of 0.80. The chart below compares the historical Sharpe Ratios of CGUI 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

CGUI vs. TNGY - Drawdown Comparison

The maximum CGUI drawdown since its inception was -0.18%, smaller than the maximum TNGY drawdown of -9.79%. Use the drawdown chart below to compare losses from any high point for CGUI and TNGY.

Drawdown Indicators

	CGUI	TNGY	Difference
Max Drawdown Largest peak-to-trough decline	-0.18%	-9.79%	+9.61%
Max Drawdown (1Y) Largest decline over 1 year	-0.18%	-9.79%	+9.61%
Current Drawdown Current decline from peak	-0.04%	-7.56%	+7.52%
Average Drawdown Average peak-to-trough decline	-0.02%	-3.58%	+3.56%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.04%	3.34%	-3.30%

Volatility

CGUI vs. TNGY - Volatility Comparison

The current volatility for Capital Group Ultra Short Income ETF (CGUI) is 0.23%, while Tortoise Energy Fund (TNGY) has a volatility of 6.56%. This indicates that CGUI experiences smaller price fluctuations and is considered to be less risky than TNGY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CGUI	TNGY	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.23%	6.56%	-6.33%
Volatility (6M) Calculated over the trailing 6-month period	0.56%	12.78%	-12.22%
Volatility (1Y) Calculated over the trailing 1-year period	0.73%	16.01%	-15.28%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.80%	16.44%	-15.64%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.80%	16.44%	-15.64%

CGUI vs. TNGY - Expense Ratio Comparison

CGUI has a 0.18% expense ratio, which is lower than TNGY's 0.85% expense ratio.

Dividends

CGUI vs. TNGY - Dividend Comparison

CGUI's dividend yield for the trailing twelve months is around 3.88%, more than TNGY's 3.55% yield.

Position	TTM	2025	2024
CGUI Capital Group Ultra Short Income ETF	3.88%	4.17%	2.62%
TNGY Tortoise Energy Fund	3.55%	2.59%	0.00%

Frequently Asked Questions

Can I hold both CGUI and TNGY in my portfolio?

CGUI and TNGY have a correlation of -0.09, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CGUI or TNGY?

TNGY has higher volatility (6.56%) compared to CGUI (0.23%). In terms of maximum drawdown, CGUI dropped -0.18% vs TNGY's -9.79%.

Which ETF is better, CGUI or TNGY?

On 1-year performance, TNGY leads with 12.82% vs 4.21% for CGUI. On fees, CGUI is cheaper at 0.18% per year. On volatility, CGUI has been the lower-risk option at 0.23%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, CGUI or TNGY?

Over the 1-year period, TNGY has performed better with a 12.82% return vs 4.21%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, CGUI or TNGY?

CGUI is cheaper with a 0.18% expense ratio, compared with 0.85% for TNGY.

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

CGUI has the higher dividend yield at 3.88%, compared with 3.55% for TNGY.

What is the main difference between CGUI and TNGY?

CGUI is categorized as Ultrashort Bond, while TNGY is Energy Equities. They also come from different issuers: Capital Group and Tortoise Capital. Their fees differ too: 0.18% for CGUI and 0.85% for TNGY.

Which has better risk-adjusted returns?

CGUI currently has the higher Sharpe Ratio (5.78 vs 0.80), 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.