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 3.39%/yr vs 19.31%/yr for GSG. At a 0.07 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 -9.50% return, which is significantly lower than GSG's 42.58% return.
TMFM
- 1D
- -1.60%
- 1M
- 2.81%
- YTD
- -9.50%
- 6M
- -11.03%
- 1Y
- -18.27%
- 3Y*
- 3.39%
- 5Y*
- —
- 10Y*
- —
GSG
- 1D
- 0.77%
- 1M
- -4.83%
- YTD
- 42.58%
- 6M
- 41.06%
- 1Y
- 51.52%
- 3Y*
- 19.31%
- 5Y*
- 15.74%
- 10Y*
- 7.69%
TMFM vs. GSG - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | |
|---|---|---|---|---|---|---|
TMFM Motley Fool Mid-Cap Growth ETF | -9.50% | -8.98% | 17.54% | 21.81% | -27.36% | 2.08% |
GSG iShares S&P GSCI Commodity-Indexed Trust | 42.58% | 5.93% | 8.52% | -5.51% | 24.08% | 3.57% |
Correlation
The correlation between TMFM and GSG is -0.17, 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 | -0.17 |
Correlation (3Y) Calculated over the trailing 3-year period | -0.01 |
Correlation (All Time) Calculated using the full available price history since Dec 14, 2021 | 0.07 |
The correlation between TMFM and GSG shifts across timeframes, from -0.17 (1 year) to 0.07 (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.
| TMFM | GSG | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -3.23 | ||
| Sortino ratioReturn per unit of downside risk | -4.26 | ||
| Omega ratioGain probability vs. loss probability | 0.85 | 1.40 | -0.55 |
| Calmar ratioReturn relative to maximum drawdown | -0.67 | 5.47 | -6.15 |
| Martin ratioReturn relative to average drawdown | -1.25 | 14.39 | -15.64 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| TMFM | GSG | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | -0.98 | 2.26 | -3.23 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | — | 0.70 | — |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.35 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | -0.14 | -0.09 | -0.06 |
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 | -27.34% | -9.46% | -17.88% |
Max Drawdown (3Y)Largest decline over 3 years | -31.75% | -14.94% | -16.81% |
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 | -26.35% | -56.95% | +30.60% |
Average DrawdownAverage peak-to-trough decline | -15.85% | -63.71% | +47.86% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 14.65% | 3.59% | +11.06% |
Volatility
TMFM vs. GSG - Volatility Comparison
Motley Fool Mid-Cap Growth ETF (TMFM) and iShares S&P GSCI Commodity-Indexed Trust (GSG) have volatilities of 7.99% and 7.65%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. 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 | 7.99% | 7.65% | +0.34% |
Volatility (6M)Calculated over the trailing 6-month period | 15.54% | 20.42% | -4.88% |
Volatility (1Y)Calculated over the trailing 1-year period | 18.76% | 22.95% | -4.19% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 20.63% | 22.61% | -1.98% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 20.63% | 22.03% | -1.40% |
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 -0.17, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
TMFM has higher volatility (7.99%) compared to GSG (7.65%). In terms of maximum drawdown, TMFM dropped -31.75% vs GSG's -89.62%.
On 3-year performance, GSG leads with 19.31% vs 3.39% for TMFM. On fees, GSG is cheaper at 0.75% per year. On volatility, GSG has been the lower-risk option at 7.65%. 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 19.31% return vs 3.39%. 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 (2.26 vs -0.98), 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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