FFEM vs. MSTZ

Last updated Aug 1, 2026

FFEM (Fidelity Fundamental Emerging Markets ETF) and MSTZ (T-REX 2X Inverse MSTR Daily Target ETF) are both exchange-traded funds - FFEM is a Emerging Markets Equities fund actively managed by Fidelity, while MSTZ is a Inverse Equities fund actively managed by REX. Both are actively managed. Over the past year, FFEM returned 46.94% vs 159.07% for MSTZ. Their -0.38 correlation means they have often moved in opposite directions in the past. FFEM charges 0.60%/yr vs 1.05%/yr for MSTZ.

Performance

FFEM vs. MSTZ - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Fundamental Emerging Markets ETF (FFEM) and T-REX 2X Inverse MSTR Daily Target ETF (MSTZ). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FFEM achieves a 23.20% return, which is significantly higher than MSTZ's -30.44% return.

FFEM

• 1D: 0.59%
• 1M: -2.11%
• 6M: 12.60%
• YTD: 23.20%
• 1Y: 46.94%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 29.60%

MSTZ

• 1D: 8.95%
• 1M: 7.38%
• 6M: -24.16%
• YTD: -30.44%
• 1Y: 159.07%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: -86.57%

*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)
FFEM Fidelity Fundamental Emerging Markets ETF	$1.53M	$1.01M	$840.57K
MSTZ T-REX 2X Inverse MSTR Daily Target ETF	$101.73M	$133.33M	$177.41M

FFEM vs. MSTZ - Yearly Performance Comparison

	2026 (YTD)	2025	2024
FFEM Fidelity Fundamental Emerging Markets ETF	23.20%	40.03%	-10.18%
MSTZ T-REX 2X Inverse MSTR Daily Target ETF	-30.44%	-38.95%	72.80%

Correlation

The correlation between FFEM and MSTZ is -0.40, meaning they have often moved in opposite directions in the past. This relationship can weaken or reverse as market conditions change.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	-0.40
Correlation (All Time) Calculated using the full available price history since Nov 21, 2024	-0.38

Return for Risk

FFEM vs. MSTZ — Risk / Return Rank

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

FFEM

FFEM Risk / Return Rank: 78
FFEM Sharpe Ratio Rank: 77
FFEM Sortino Ratio Rank: 72
FFEM Omega Ratio Rank: 77
FFEM Calmar Ratio Rank: 84
FFEM Martin Ratio Rank: 79

MSTZ

MSTZ Risk / Return Rank: 61
MSTZ Sharpe Ratio Rank: 58
MSTZ Sortino Ratio Rank: 68
MSTZ Omega Ratio Rank: 68
MSTZ Calmar Ratio Rank: 70
MSTZ Martin Ratio Rank: 42

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.

FFEM vs. MSTZ - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Fundamental Emerging Markets ETF (FFEM) and T-REX 2X Inverse MSTR Daily Target ETF (MSTZ). 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.

	FFEM	MSTZ	Difference
Sharpe ratio: Return per unit of total volatility	1.76	1.38	+0.38
Sortino ratio: Return per unit of downside risk	2.32	2.22	+0.10
Omega ratio: Gain probability vs. loss probability	1.32	1.28	+0.04
Calmar ratio: Return relative to maximum drawdown	3.17	2.44	+0.73
Martin ratio: Return relative to average drawdown	9.99	4.53	+5.46

FFEM vs. MSTZ - Sharpe Ratio Comparison

The current FFEM Sharpe Ratio is 1.76, which is comparable to the MSTZ Sharpe Ratio of 1.38. The chart below compares the historical Sharpe Ratios of FFEM and MSTZ, 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

FFEM vs. MSTZ - Drawdown Comparison

The maximum FFEM drawdown since its inception was -18.17%, smaller than the maximum MSTZ drawdown of -99.38%. Use the drawdown chart below to compare losses from any high point for FFEM and MSTZ.

Drawdown Indicators

	FFEM	MSTZ	Difference
Max Drawdown Largest peak-to-trough decline	-18.17%	-99.38%	+81.21%
Max Drawdown (1Y) Largest decline over 1 year	-14.53%	-84.89%	+70.36%
Current Drawdown Current decline from peak	-9.95%	-97.63%	+87.68%
Average Drawdown Average peak-to-trough decline	-3.90%	-94.63%	+90.73%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.60%	45.62%	-41.02%

Volatility

FFEM vs. MSTZ - Volatility Comparison

The current volatility for Fidelity Fundamental Emerging Markets ETF (FFEM) is 9.93%, while T-REX 2X Inverse MSTR Daily Target ETF (MSTZ) has a volatility of 37.86%. This indicates that FFEM experiences smaller price fluctuations and is considered to be less risky than MSTZ based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FFEM	MSTZ	Difference
Volatility (1M) Calculated over the trailing 1-month period	9.93%	37.86%	-27.93%
Volatility (6M) Calculated over the trailing 6-month period	23.77%	134.52%	-110.75%
Volatility (1Y) Calculated over the trailing 1-year period	26.25%	150.23%	-123.98%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	25.05%	169.87%	-144.82%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	25.05%	169.87%	-144.82%

FFEM vs. MSTZ - Expense Ratio Comparison

FFEM has a 0.60% expense ratio, which is lower than MSTZ's 1.05% expense ratio.

Dividends

FFEM vs. MSTZ - Dividend Comparison

FFEM's dividend yield for the trailing twelve months is around 1.33%, while MSTZ has not paid dividends to shareholders.

Position	TTM	2025	2024
FFEM Fidelity Fundamental Emerging Markets ETF	1.33%	1.59%	0.16%
MSTZ T-REX 2X Inverse MSTR Daily Target ETF	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FFEM and MSTZ in my portfolio?

FFEM and MSTZ have a correlation of -0.40, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FFEM or MSTZ?

MSTZ has higher volatility (37.86%) compared to FFEM (9.93%). In terms of maximum drawdown, FFEM dropped -18.17% vs MSTZ's -99.38%.

Which ETF is better, FFEM or MSTZ?

On 1-year performance, MSTZ leads with 159.07% vs 46.94% for FFEM. On fees, FFEM is cheaper at 0.60% per year. On volatility, FFEM has been the lower-risk option at 9.93%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, FFEM or MSTZ?

Over the 1-year period, MSTZ has performed better with a 159.07% return vs 46.94%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, FFEM or MSTZ?

FFEM is cheaper with a 0.60% expense ratio, compared with 1.05% for MSTZ.

Which ETF pays a higher dividend yield, FFEM or MSTZ?

FFEM has the higher dividend yield at 1.33%, compared with 0.00% for MSTZ.

What is the main difference between FFEM and MSTZ?

FFEM is categorized as Emerging Markets Equities, while MSTZ is Inverse Equities. They also come from different issuers: Fidelity and REX. Their fees differ too: 0.60% for FFEM and 1.05% for MSTZ.

Which has better risk-adjusted returns?

FFEM currently has the higher Sharpe Ratio (1.76 vs 1.38), 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.