GSG vs. BWET

Last updated Aug 4, 2026

GSG (iShares S&P GSCI Commodity-Indexed Trust) and BWET (Breakwave Tanker Shipping ETF) are both Commodities funds - GSG tracks the S&P GSCI Total Return Index while BWET tracks the Breakwave Wet Freight Futures Index. Both are passively managed. Over the past 3 years, GSG returned 13.26%/yr vs 135.18%/yr for BWET. Their 0.07 correlation means their historical movements had little consistent relationship. GSG charges 0.75%/yr vs 3.50%/yr for BWET.

Performance

GSG vs. BWET - Performance Comparison

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

Returns By Period

In the year-to-date period, GSG achieves a 35.21% return, which is significantly lower than BWET's 1,246.34% return.

GSG

• 1D: -2.68%
• 1M: 9.90%
• 6M: 27.47%
• YTD: 35.21%
• 1Y: 38.52%
• 3Y*: 13.26%
• 5Y*: 14.69%
• 10Y*: 8.24%
• ALL TIME*: -2.27%

BWET

• 1D: -3.40%
• 1M: 52.08%
• 6M: 619.27%
• YTD: 1,246.34%
• 1Y: 2,150.47%
• 3Y*: 135.18%
• 5Y*: —
• 10Y*: —
• ALL TIME*: 144.54%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
BWET Breakwave Tanker Shipping ETF	$45.42M	$38.94M	$29.75M
GSG iShares S&P GSCI Commodity-Indexed Trust	$17.98M	$16.40M	$25.53M

GSG vs. BWET - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
GSG iShares S&P GSCI Commodity-Indexed Trust	35.21%	5.93%	8.52%	4.70%
BWET Breakwave Tanker Shipping ETF	1,246.34%	96.22%	-39.21%	14.13%

Correlation

The correlation between GSG and BWET is 0.11, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.11
Correlation (3Y) Balances recent behavior with more history.	0.08
Correlation (All Time) Calculated using the full available price history since May 3, 2023	0.07

Return for Risk

GSG vs. BWET — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

GSG

GSG Risk / Return Rank: 61
GSG Sharpe Ratio Rank: 68
GSG Sortino Ratio Rank: 64
GSG Omega Ratio Rank: 64
GSG Calmar Ratio Rank: 57
GSG Martin Ratio Rank: 55

BWET

BWET Risk / Return Rank: 99
BWET Sharpe Ratio Rank: 100
BWET Sortino Ratio Rank: 98
BWET Omega Ratio Rank: 98
BWET Calmar Ratio Rank: 99
BWET Martin Ratio Rank: 99

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

GSG vs. BWET - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares S&P GSCI Commodity-Indexed Trust (GSG) and Breakwave Tanker Shipping ETF (BWET). 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.

	GSG	BWET	Difference
Sharpe ratio: Return per unit of total volatility	1.59	20.19	-18.59
Sortino ratio: Return per unit of downside risk	2.17	6.36	-4.19
Omega ratio: Gain probability vs. loss probability	1.28	1.91	-0.63
Calmar ratio: Return relative to maximum drawdown	2.06	52.86	-50.80
Martin ratio: Return relative to average drawdown	6.61	198.46	-191.85

GSG vs. BWET - Sharpe Ratio Comparison

The current GSG Sharpe Ratio is 1.59, which is lower than the BWET Sharpe Ratio of 20.19. The chart below compares the historical Sharpe Ratios of GSG and BWET, 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

GSG vs. BWET - Drawdown Comparison

The maximum GSG drawdown since its inception was -89.62%, which is greater than BWET's maximum drawdown of -56.90%. Use the drawdown chart below to compare losses from any high point for GSG and BWET.

Drawdown Indicators

	GSG	BWET	Difference
Max Drawdown Largest peak-to-trough decline	-89.62%	-56.90%	-32.72%
Max Drawdown (1Y) Largest decline over 1 year	-18.81%	-41.22%	+22.41%
Max Drawdown (3Y) Largest decline over 3 years	-18.81%	-56.81%	+38.00%
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	-59.18%	-3.40%	-55.78%
Average Drawdown Average peak-to-trough decline	-63.67%	-23.38%	-40.29%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.85%	10.96%	-5.11%

Volatility

GSG vs. BWET - Volatility Comparison

The current volatility for iShares S&P GSCI Commodity-Indexed Trust (GSG) is 8.75%, while Breakwave Tanker Shipping ETF (BWET) has a volatility of 31.04%. This indicates that GSG experiences smaller price fluctuations and is considered to be less risky than BWET based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GSG	BWET	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.75%	31.04%	-22.29%
Volatility (6M) Calculated over the trailing 6-month period	22.27%	95.74%	-73.47%
Volatility (1Y) Calculated over the trailing 1-year period	24.37%	108.15%	-83.78%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.89%	74.45%	-51.56%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.07%	74.45%	-52.38%

GSG vs. BWET - Expense Ratio Comparison

GSG has a 0.75% expense ratio, which is lower than BWET's 3.50% expense ratio.

Dividends

GSG vs. BWET - Dividend Comparison

Neither GSG nor BWET has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both GSG and BWET in my portfolio?

GSG and BWET have a correlation of 0.11, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, GSG or BWET?

BWET has higher volatility (31.04%) compared to GSG (8.75%). In terms of maximum drawdown, GSG dropped -89.62% vs BWET's -56.90%.

Which ETF is better, GSG or BWET?

On 3-year performance, BWET leads with 135.18% vs 13.26% for GSG. On fees, GSG is cheaper at 0.75% per year. On volatility, GSG has been the lower-risk option at 8.75%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, GSG or BWET?

Over the 3-year period, BWET has performed better with a 135.18% return vs 13.26%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, GSG or BWET?

GSG is cheaper with a 0.75% expense ratio, compared with 3.50% for BWET.

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

GSG and BWET have nearly identical dividend yields, around 0.00%.

What is the main difference between GSG and BWET?

GSG tracks S&P GSCI Total Return Index, while BWET tracks Breakwave Wet Freight Futures Index. They also come from different issuers: iShares and Amplify. Their fees differ too: 0.75% for GSG and 3.50% for BWET.

Which has better risk-adjusted returns?

BWET currently has the higher Sharpe Ratio (20.19 vs 1.59), 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.