IBDU vs. TNGY

Last updated Jun 4, 2026

IBDU (iShares iBonds Dec 2029 Term Corporate ETF) and TNGY (Tortoise Energy Fund) are both exchange-traded funds - IBDU is a Corporate Bonds fund tracking the Bloomberg December 2029 Maturity Corporate Index, while TNGY is a Energy Equities fund actively managed by Tortoise Capital. IBDU is passively managed, while TNGY is actively managed. At a correlation of -0.12, they often move in opposite directions. IBDU charges 0.10%/yr vs 0.85%/yr for TNGY.

Performance

IBDU vs. TNGY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares iBonds Dec 2029 Term Corporate ETF (IBDU) 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, IBDU achieves a 0.54% return, which is significantly lower than TNGY's 15.21% return.

IBDU

• 1D: -0.13%
• 1M: 0.12%
• YTD: 0.54%
• 6M: 0.88%
• 1Y: 4.76%
• 3Y*: 5.73%
• 5Y*: 1.29%
• 10Y*: —

TNGY

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

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

IBDU vs. TNGY - Yearly Performance Comparison

	2026 (YTD)	2025
IBDU iShares iBonds Dec 2029 Term Corporate ETF	0.54%	4.07%
TNGY Tortoise Energy Fund	15.21%	1.81%

Correlation

The correlation between IBDU and TNGY is -0.12, 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	-0.12

Return for Risk

IBDU vs. TNGY — Risk / Return Rank

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

IBDU

IBDU Risk / Return Rank: 65
IBDU Sharpe Ratio Rank: 63
IBDU Sortino Ratio Rank: 72
IBDU Omega Ratio Rank: 67
IBDU Calmar Ratio Rank: 61
IBDU Martin Ratio Rank: 63

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.

IBDU vs. TNGY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Dec 2029 Term Corporate ETF (IBDU) 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.

	IBDU	TNGY	Difference
Sharpe ratio Return per unit of total volatility	2.12	—	—
Sortino ratio Return per unit of downside risk	3.29	—	—
Omega ratio Gain probability vs. loss probability	1.41	—	—
Calmar ratio Return relative to maximum drawdown	3.02	—	—
Martin ratio Return relative to average drawdown	11.33	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	IBDU	TNGY	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.12	—	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.23	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.33	1.15	-0.83

Drawdowns

IBDU vs. TNGY - Drawdown Comparison

The maximum IBDU drawdown since its inception was -19.44%, which is greater than TNGY's maximum drawdown of -8.86%. Use the drawdown chart below to compare losses from any high point for IBDU and TNGY.

Drawdown Indicators

	IBDU	TNGY	Difference
Max Drawdown Largest peak-to-trough decline	-19.44%	-8.86%	-10.58%
Max Drawdown (1Y) Largest decline over 1 year	-1.59%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-4.14%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-19.44%	—	—
Current Drawdown Current decline from peak	-0.54%	-3.92%	+3.38%
Average Drawdown Average peak-to-trough decline	-5.41%	-2.18%	-3.23%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.42%	—	—

Volatility

Volatility by Period

	IBDU	TNGY	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.58%	—	—
Volatility (6M) Calculated over the trailing 6-month period	1.49%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	2.26%	15.70%	-13.44%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.72%	15.70%	-9.98%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.32%	15.70%	-8.38%

IBDU vs. TNGY - Expense Ratio Comparison

IBDU has a 0.10% expense ratio, which is lower than TNGY's 0.85% expense ratio.

Dividends

IBDU vs. TNGY - Dividend Comparison

IBDU's dividend yield for the trailing twelve months is around 4.66%, more than TNGY's 3.41% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019
IBDU iShares iBonds Dec 2029 Term Corporate ETF	4.66%	4.67%	4.75%	4.21%	3.34%	2.29%	2.42%	0.74%
TNGY Tortoise Energy Fund	3.41%	2.59%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both IBDU and TNGY in my portfolio?

IBDU and TNGY have a correlation of -0.12, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, IBDU or TNGY?

On fees, IBDU is cheaper at 0.10% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, IBDU or TNGY?

IBDU is cheaper with a 0.10% expense ratio, compared with 0.85% for TNGY.

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

IBDU has the higher dividend yield at 4.66%, compared with 3.41% for TNGY.

What is the main difference between IBDU and TNGY?

IBDU is categorized as Corporate Bonds, while TNGY is Energy Equities. They also come from different issuers: iShares and Tortoise Capital. Their fees differ too: 0.10% for IBDU and 0.85% for TNGY.