SPEM vs. MSTZ

Last updated Jun 26, 2026

SPEM (SPDR Portfolio Emerging Markets ETF) and MSTZ (T-REX 2X Inverse MSTR Daily Target ETF) are both exchange-traded funds - SPEM is a Emerging Markets Equities fund tracking the S&P Emerging BMI Index, while MSTZ is a Inverse Equities fund actively managed by REX. SPEM is passively managed, while MSTZ is actively managed. Over the past year, SPEM returned 23.82% vs 279.21% for MSTZ. At a correlation of -0.38, they often move in opposite directions. SPEM charges 0.07%/yr vs 1.05%/yr for MSTZ.

Performance

SPEM vs. MSTZ - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in SPDR Portfolio Emerging Markets ETF (SPEM) 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, SPEM achieves a 10.11% return, which is significantly higher than MSTZ's 1.05% return.

SPEM

• 1D: -0.27%
• 1M: -1.79%
• YTD: 10.11%
• 6M: 10.30%
• 1Y: 23.82%
• 3Y*: 17.66%
• 5Y*: 5.34%
• 10Y*: 9.65%

MSTZ

• 1D: 19.27%
• 1M: 186.45%
• YTD: 1.05%
• 6M: 9.89%
• 1Y: 279.21%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

SPEM vs. MSTZ - Yearly Performance Comparison

	2026 (YTD)	2025	2024
SPEM SPDR Portfolio Emerging Markets ETF	10.11%	25.63%	1.25%
MSTZ T-REX 2X Inverse MSTR Daily Target ETF	1.05%	-38.95%	-94.43%

Correlation

The correlation between SPEM and MSTZ is -0.40, 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	-0.40
Correlation (All Time) Calculated using the full available price history since Sep 18, 2024	-0.38

Return for Risk

SPEM vs. MSTZ — Risk / Return Rank

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

SPEM

SPEM Risk / Return Rank: 47
SPEM Sharpe Ratio Rank: 46
SPEM Sortino Ratio Rank: 44
SPEM Omega Ratio Rank: 48
SPEM Calmar Ratio Rank: 48
SPEM Martin Ratio Rank: 50

MSTZ

MSTZ Risk / Return Rank: 62
MSTZ Sharpe Ratio Rank: 69
MSTZ Sortino Ratio Rank: 60
MSTZ Omega Ratio Rank: 59
MSTZ Calmar Ratio Rank: 74
MSTZ Martin Ratio Rank: 45

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.

SPEM vs. MSTZ - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SPDR Portfolio Emerging Markets ETF (SPEM) 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.

	SPEM	MSTZ	Difference
Sharpe ratio: Return per unit of total volatility	1.42	1.93	-0.51
Sortino ratio: Return per unit of downside risk	1.97	2.48	-0.51
Omega ratio: Gain probability vs. loss probability	1.27	1.32	-0.05
Calmar ratio: Return relative to maximum drawdown	2.11	3.31	-1.21
Martin ratio: Return relative to average drawdown	7.49	6.57	+0.92

SPEM vs. MSTZ - Sharpe Ratio Comparison

The current SPEM Sharpe Ratio is 1.42, which is comparable to the MSTZ Sharpe Ratio of 1.93. The chart below compares the historical Sharpe Ratios of SPEM 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

SPEM vs. MSTZ - Drawdown Comparison

The maximum SPEM drawdown since its inception was -64.41%, smaller than the maximum MSTZ drawdown of -99.38%. Use the drawdown chart below to compare losses from any high point for SPEM and MSTZ.

Drawdown Indicators

	SPEM	MSTZ	Difference
Max Drawdown Largest peak-to-trough decline	-64.41%	-99.38%	+34.97%
Max Drawdown (1Y) Largest decline over 1 year	-11.36%	-84.89%	+73.53%
Max Drawdown (3Y) Largest decline over 3 years	-17.62%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-31.75%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-36.06%	—	—
Current Drawdown Current decline from peak	-3.95%	-96.56%	+92.61%
Average Drawdown Average peak-to-trough decline	-14.71%	-94.46%	+79.75%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.19%	42.70%	-39.51%

Volatility

SPEM vs. MSTZ - Volatility Comparison

The current volatility for SPDR Portfolio Emerging Markets ETF (SPEM) is 7.21%, while T-REX 2X Inverse MSTR Daily Target ETF (MSTZ) has a volatility of 46.08%. This indicates that SPEM 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

	SPEM	MSTZ	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.21%	46.08%	-38.87%
Volatility (6M) Calculated over the trailing 6-month period	14.75%	129.73%	-114.98%
Volatility (1Y) Calculated over the trailing 1-year period	16.90%	145.84%	-128.94%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.35%	170.65%	-153.30%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.79%	170.65%	-151.86%

SPEM vs. MSTZ - Expense Ratio Comparison

SPEM has a 0.07% expense ratio, which is lower than MSTZ's 1.05% expense ratio.

Dividends

SPEM vs. MSTZ - Dividend Comparison

SPEM's dividend yield for the trailing twelve months is around 2.55%, while MSTZ has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MSTZ T-REX 2X Inverse MSTR Daily Target ETF	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
SPEM SPDR Portfolio Emerging Markets ETF	2.55%	2.77%	2.78%	2.80%	3.38%	3.14%	1.92%	2.94%	2.34%	1.12%	1.51%	2.40%

Frequently Asked Questions

Can I hold both SPEM and MSTZ in my portfolio?

SPEM 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, SPEM or MSTZ?

MSTZ has higher volatility (46.08%) compared to SPEM (7.21%). In terms of maximum drawdown, SPEM dropped -64.41% vs MSTZ's -99.38%.

Which ETF is better, SPEM or MSTZ?

On 1-year performance, MSTZ leads with 279.21% vs 23.82% for SPEM. On fees, SPEM is cheaper at 0.07% per year. On volatility, SPEM has been the lower-risk option at 7.21%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, SPEM or MSTZ?

Over the 1-year period, MSTZ has performed better with a 279.21% return vs 23.82%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, SPEM or MSTZ?

SPEM is cheaper with a 0.07% expense ratio, compared with 1.05% for MSTZ.

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

SPEM has the higher dividend yield at 2.55%, compared with 0.00% for MSTZ.

What is the main difference between SPEM and MSTZ?

SPEM is categorized as Emerging Markets Equities, while MSTZ is Inverse Equities. They also come from different issuers: State Street and REX. Their fees differ too: 0.07% for SPEM and 1.05% for MSTZ.

Which has better risk-adjusted returns?

MSTZ currently has the higher Sharpe Ratio (1.93 vs 1.42), 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.