TMFM vs. GSG
TMFM (Motley Fool Mid-Cap Growth ETF) and GSG (iShares S&P GSCI Commodity-Indexed Trust) are both exchange-traded funds - TMFM is a Mid Cap Growth Equities fund actively managed by Motley Fool, while GSG is a Commodities fund tracking the S&P GSCI Total Return Index. TMFM is actively managed, while GSG is passively managed. Over the past 3 years, TMFM returned 2.45%/yr vs 15.32%/yr for GSG. At a 0.06 correlation, their price movements are largely independent. TMFM charges 0.85%/yr vs 0.75%/yr for GSG.
Performance
TMFM vs. GSG - Performance Comparison
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Returns By Period
In the year-to-date period, TMFM achieves a -5.52% return, which is significantly lower than GSG's 33.95% return.
TMFM
- 1D
- 1.85%
- 1M
- 4.42%
- 6M
- -8.00%
- YTD
- -5.52%
- 1Y
- -15.26%
- 3Y*
- 2.45%
- 5Y*
- —
- 10Y*
- —
GSG
- 1D
- -0.93%
- 1M
- 4.15%
- 6M
- 29.74%
- YTD
- 33.95%
- 1Y
- 37.41%
- 3Y*
- 15.32%
- 5Y*
- 14.20%
- 10Y*
- 7.61%
TMFM vs. GSG - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | |
|---|---|---|---|---|---|---|
TMFM Motley Fool Mid-Cap Growth ETF | -5.52% | -8.98% | 17.54% | 21.81% | -27.36% | 1.91% |
GSG iShares S&P GSCI Commodity-Indexed Trust | 33.95% | 5.93% | 8.52% | -5.51% | 24.08% | 2.95% |
Correlation
The correlation between TMFM and GSG is -0.16, 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 (1Y) Calculated over the trailing 1-year period | -0.16 |
Correlation (3Y) Calculated over the trailing 3-year period | -0.03 |
Correlation (All Time) Calculated using the full available price history since Dec 13, 2021 | 0.06 |
The correlation between TMFM and GSG shifts across timeframes, from -0.16 (1 year) to 0.06 (all time), reflecting how their relationship changes across market environments.
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Return for Risk
TMFM vs. GSG — Risk / Return Rank
TMFM
GSG
TMFM vs. GSG - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Motley Fool Mid-Cap Growth ETF (TMFM) 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.
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.
| TMFM | GSG | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -2.40 | ||
| Sortino ratioReturn per unit of downside risk | -3.30 | ||
| Omega ratioGain probability vs. loss probability | 0.88 | 1.29 | -0.40 |
| Calmar ratioReturn relative to maximum drawdown | -0.58 | 2.00 | -2.57 |
| Martin ratioReturn relative to average drawdown | -0.99 | 6.66 | -7.65 |
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Drawdowns
TMFM vs. GSG - Drawdown Comparison
The maximum TMFM drawdown since its inception was -31.75%, smaller than the maximum GSG drawdown of -89.62%. Use the drawdown chart below to compare losses from any high point for TMFM and GSG.
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Drawdown Indicators
| TMFM | GSG | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -31.75% | -89.62% | +57.87% |
Max Drawdown (1Y)Largest decline over 1 year | -26.59% | -18.81% | -7.78% |
Max Drawdown (3Y)Largest decline over 3 years | -31.75% | -18.81% | -12.94% |
Max Drawdown (5Y)Largest decline over 5 years | — | -29.12% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -57.64% | — |
Current DrawdownCurrent decline from peak | -23.12% | -59.56% | +36.44% |
Average DrawdownAverage peak-to-trough decline | -16.08% | -63.68% | +47.60% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 15.47% | 5.63% | +9.84% |
Volatility
TMFM vs. GSG - Volatility Comparison
The current volatility for Motley Fool Mid-Cap Growth ETF (TMFM) is 5.64%, while iShares S&P GSCI Commodity-Indexed Trust (GSG) has a volatility of 7.17%. This indicates that TMFM experiences smaller price fluctuations and is considered to be less risky than GSG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| TMFM | GSG | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.64% | 7.17% | -1.53% |
Volatility (6M)Calculated over the trailing 6-month period | 16.01% | 21.54% | -5.53% |
Volatility (1Y)Calculated over the trailing 1-year period | 19.15% | 23.48% | -4.33% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 20.56% | 22.80% | -2.24% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 20.56% | 22.00% | -1.44% |
TMFM vs. GSG - Expense Ratio Comparison
TMFM has a 0.85% expense ratio, which is higher than GSG's 0.75% expense ratio.
Dividends
TMFM vs. GSG - Dividend Comparison
TMFM's dividend yield for the trailing twelve months is around 0.07%, while GSG has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 |
|---|---|---|---|---|
GSG iShares S&P GSCI Commodity-Indexed Trust | 0.00% | 0.00% | 0.00% | 0.00% |
TMFM Motley Fool Mid-Cap Growth ETF | 0.07% | 0.06% | 16.27% | 2.55% |
Frequently Asked Questions
TMFM and GSG have a correlation of -0.16, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
GSG has higher volatility (7.17%) compared to TMFM (5.64%). In terms of maximum drawdown, TMFM dropped -31.75% vs GSG's -89.62%.
On 3-year performance, GSG leads with 15.32% vs 2.45% for TMFM. On fees, GSG is cheaper at 0.75% per year. On volatility, TMFM has been the lower-risk option at 5.64%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 3-year period, GSG has performed better with a 15.32% return vs 2.45%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
GSG is cheaper with a 0.75% expense ratio, compared with 0.85% for TMFM.
TMFM has the higher dividend yield at 0.07%, compared with 0.00% for GSG.
TMFM is categorized as Mid Cap Growth Equities, while GSG is Commodities. They also come from different issuers: Motley Fool and iShares. Their fees differ too: 0.85% for TMFM and 0.75% for GSG.
GSG currently has the higher Sharpe Ratio (1.60 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.
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