TMB vs. IBDR

Last updated Jun 25, 2026

TMB (Thornburg Multi Sector Bond ETF) and IBDR (iShares iBonds Dec 2026 Term Corporate ETF) are both exchange-traded funds - TMB is a Multisector Bonds fund actively managed by Thornburg, while IBDR is a Corporate Bonds fund tracking the Barclays December 2026 Maturity Corporate Index. TMB is actively managed, while IBDR is passively managed. At a 0.00 correlation, their price movements are largely independent. TMB charges 0.55%/yr vs 0.10%/yr for IBDR.

Performance

TMB vs. IBDR - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Thornburg Multi Sector Bond ETF (TMB) and iShares iBonds Dec 2026 Term Corporate ETF (IBDR). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

TMB

• 1D: 0.16%
• 1M: 0.68%
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

IBDR

• 1D: -0.04%
• 1M: 0.25%
• YTD: 1.65%
• 6M: 1.77%
• 1Y: 4.21%
• 3Y*: 5.16%
• 5Y*: 1.58%
• 10Y*: —

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

TMB vs. IBDR - Yearly Performance Comparison

	2026 (YTD)
TMB Thornburg Multi Sector Bond ETF	0.68%
IBDR iShares iBonds Dec 2026 Term Corporate ETF	0.25%

Correlation

The correlation between TMB and IBDR is 0.00, 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 (All Time) Calculated using the full available price history since May 26, 2026	0.00

Return for Risk

TMB vs. IBDR — Risk / Return Rank

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

TMB

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

IBDR

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

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.

TMB vs. IBDR - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Thornburg Multi Sector Bond ETF (TMB) and iShares iBonds Dec 2026 Term Corporate ETF (IBDR). 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.

	TMB	IBDR	Difference
Sharpe ratio: Return per unit of total volatility	—	6.67	—
Sortino ratio: Return per unit of downside risk	—	13.89	—
Omega ratio: Gain probability vs. loss probability	—	3.26	—
Calmar ratio: Return relative to maximum drawdown	—	51.18	—
Martin ratio: Return relative to average drawdown	—	177.95	—

Drawdowns

TMB vs. IBDR - Drawdown Comparison

The maximum TMB drawdown since its inception was -0.59%, smaller than the maximum IBDR drawdown of -16.06%. Use the drawdown chart below to compare losses from any high point for TMB and IBDR.

Drawdown Indicators

	TMB	IBDR	Difference
Max Drawdown Largest peak-to-trough decline	-0.59%	-16.06%	+15.47%
Max Drawdown (1Y) Largest decline over 1 year	—	-0.08%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-1.08%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-13.13%	—
Current Drawdown Current decline from peak	-0.14%	-0.04%	-0.10%
Average Drawdown Average peak-to-trough decline	-0.17%	-2.82%	+2.65%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.02%	—

Volatility

Volatility by Period

	TMB	IBDR	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.18%	—
Volatility (6M) Calculated over the trailing 6-month period	—	0.35%	—
Volatility (1Y) Calculated over the trailing 1-year period	3.52%	0.63%	+2.89%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.52%	3.39%	+0.13%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.52%	4.85%	-1.33%

TMB vs. IBDR - Expense Ratio Comparison

TMB has a 0.55% expense ratio, which is higher than IBDR's 0.10% expense ratio.

Dividends

TMB vs. IBDR - Dividend Comparison

TMB's dividend yield for the trailing twelve months is around 0.36%, less than IBDR's 4.13% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
IBDR iShares iBonds Dec 2026 Term Corporate ETF	4.13%	4.20%	4.13%	3.41%	2.44%	2.11%	2.61%	3.25%	3.56%	3.22%	0.86%
TMB Thornburg Multi Sector Bond ETF	0.36%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both TMB and IBDR in my portfolio?

TMB and IBDR have a correlation of 0.00, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, TMB or IBDR?

On fees, IBDR 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, TMB or IBDR?

IBDR is cheaper with a 0.10% expense ratio, compared with 0.55% for TMB.

Which ETF pays a higher dividend yield, TMB or IBDR?

IBDR has the higher dividend yield at 4.13%, compared with 0.36% for TMB.

What is the main difference between TMB and IBDR?

TMB is categorized as Multisector Bonds, while IBDR is Corporate Bonds. They also come from different issuers: Thornburg and iShares. Their fees differ too: 0.55% for TMB and 0.10% for IBDR.