TMB vs. GSG

Last updated Jun 5, 2026

TMB (Thornburg Multi Sector Bond ETF) and GSG (iShares S&P GSCI Commodity-Indexed Trust) are both exchange-traded funds - TMB is a Multisector Bonds fund actively managed by Thornburg, while GSG is a Commodities fund tracking the S&P GSCI Total Return Index. TMB is actively managed, while GSG is passively managed. At a correlation of -0.82, they often move in opposite directions. TMB charges 0.55%/yr vs 0.75%/yr for GSG.

Performance

TMB vs. GSG - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Thornburg Multi Sector Bond ETF (TMB) and iShares S&P GSCI Commodity-Indexed Trust (GSG). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

TMB

• 1D: 0.17%
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

GSG

• 1D: -1.49%
• 1M: -5.32%
• YTD: 40.46%
• 6M: 38.18%
• 1Y: 49.68%
• 3Y*: 18.78%
• 5Y*: 15.39%
• 10Y*: 7.42%

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

TMB vs. GSG - Yearly Performance Comparison

	2026 (YTD)
TMB Thornburg Multi Sector Bond ETF	0.34%
GSG iShares S&P GSCI Commodity-Indexed Trust	-0.61%

Correlation

The correlation between TMB and GSG is -0.82, 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 May 27, 2026	-0.82

Return for Risk

TMB vs. GSG — Risk / Return Rank

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

GSG

GSG Risk / Return Rank: 71
GSG Sharpe Ratio Rank: 67
GSG Sortino Ratio Rank: 60
GSG Omega Ratio Rank: 66
GSG Calmar Ratio Rank: 89
GSG Martin Ratio Rank: 74

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. GSG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Thornburg Multi Sector Bond ETF (TMB) and iShares S&P GSCI Commodity-Indexed Trust (GSG). 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

	TMB	GSG	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	2.17	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.68	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.34	—
Sharpe Ratio (All Time) Calculated using the full available price history	5.77	-0.09	+5.85

Drawdowns

TMB vs. GSG - Drawdown Comparison

The maximum TMB drawdown since its inception was -0.24%, smaller than the maximum GSG drawdown of -89.62%. Use the drawdown chart below to compare losses from any high point for TMB and GSG.

Drawdown Indicators

	TMB	GSG	Difference
Max Drawdown Largest peak-to-trough decline	-0.24%	-89.62%	+89.38%
Max Drawdown (1Y) Largest decline over 1 year	—	-9.46%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-14.94%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-29.12%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-57.64%	—
Current Drawdown Current decline from peak	-0.06%	-57.59%	+57.53%
Average Drawdown Average peak-to-trough decline	-0.06%	-63.71%	+63.65%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	3.62%	—

Volatility

Volatility by Period

	TMB	GSG	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	7.72%	—
Volatility (6M) Calculated over the trailing 6-month period	—	20.48%	—
Volatility (1Y) Calculated over the trailing 1-year period	2.46%	23.01%	-20.55%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.46%	22.61%	-20.15%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.46%	22.03%	-19.57%

TMB vs. GSG - Expense Ratio Comparison

TMB has a 0.55% expense ratio, which is lower than GSG's 0.75% expense ratio.

Dividends

TMB vs. GSG - Dividend Comparison

TMB's dividend yield for the trailing twelve months is around 0.36%, while GSG has not paid dividends to shareholders.

Position	TTM
GSG iShares S&P GSCI Commodity-Indexed Trust	0.00%
TMB Thornburg Multi Sector Bond ETF	0.36%

Frequently Asked Questions

Can I hold both TMB and GSG in my portfolio?

TMB and GSG have a correlation of -0.82, 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 GSG?

On fees, TMB is cheaper at 0.55% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, TMB or GSG?

TMB is cheaper with a 0.55% expense ratio, compared with 0.75% for GSG.

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

TMB has the higher dividend yield at 0.36%, compared with 0.00% for GSG.

What is the main difference between TMB and GSG?

TMB is categorized as Multisector Bonds, while GSG is Commodities. They also come from different issuers: Thornburg and iShares. Their fees differ too: 0.55% for TMB and 0.75% for GSG.