FSST vs. MSTZ

Last updated Jul 12, 2026

FSST (Fidelity Sustainability U.S. Equity ETF) and MSTZ (T-REX 2X Inverse MSTR Daily Target ETF) are both exchange-traded funds - FSST is a Sustainable fund tracking the Russell 3000, while MSTZ is a Inverse Equities fund actively managed by REX. FSST is passively managed, while MSTZ is actively managed. At a correlation of -0.37, they often move in opposite directions. FSST charges 0.59%/yr vs 1.05%/yr for MSTZ.

Performance

FSST vs. MSTZ - Performance Comparison

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

Returns By Period

FSST

• 1D: —
• 1M: —
• 6M: —
• YTD: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

MSTZ

• 1D: -1.53%
• 1M: 39.32%
• 6M: -19.19%
• YTD: -26.97%
• 1Y: 264.10%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

FSST vs. MSTZ - Yearly Performance Comparison

	2026 (YTD)	2025	2024
FSST Fidelity Sustainability U.S. Equity ETF	0.00%	15.40%	2.91%
MSTZ T-REX 2X Inverse MSTR Daily Target ETF	-26.97%	-38.95%	-94.43%

Correlation

The correlation between FSST and MSTZ is -0.22, 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	-0.22
Correlation (All Time) Calculated using the full available price history since Sep 18, 2024	-0.37

The correlation between FSST and MSTZ shifts across timeframes, from -0.37 (all time) to -0.22 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

FSST vs. MSTZ — Risk / Return Rank

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

FSST

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

MSTZ

MSTZ Risk / Return Rank: 60
MSTZ Sharpe Ratio Rank: 61
MSTZ Sortino Ratio Rank: 62
MSTZ Omega Ratio Rank: 63
MSTZ Calmar Ratio Rank: 71
MSTZ Martin Ratio Rank: 43

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.

FSST vs. MSTZ - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Sustainability U.S. Equity ETF (FSST) 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.

	FSST	MSTZ	Difference
Sharpe ratio: Return per unit of total volatility	—	1.64	—
Sortino ratio: Return per unit of downside risk	—	2.34	—
Omega ratio: Gain probability vs. loss probability	—	1.30	—
Calmar ratio: Return relative to maximum drawdown	—	2.86	—
Martin ratio: Return relative to average drawdown	—	5.59	—

Drawdowns

Drawdown Indicators

	FSST	MSTZ	Difference
Max Drawdown Largest peak-to-trough decline	—	-99.38%	—
Max Drawdown (1Y) Largest decline over 1 year	—	-84.89%	—
Current Drawdown Current decline from peak	—	-97.51%	—
Average Drawdown Average peak-to-trough decline	—	-94.53%	—
Ulcer Index Depth and duration of drawdowns from previous peaks	—	43.41%	—

Volatility

Volatility by Period

	FSST	MSTZ	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	56.46%	—
Volatility (6M) Calculated over the trailing 6-month period	—	135.20%	—
Volatility (1Y) Calculated over the trailing 1-year period	—	148.41%	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	—	171.17%	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	—	171.17%	—

FSST vs. MSTZ - Expense Ratio Comparison

FSST has a 0.59% expense ratio, which is lower than MSTZ's 1.05% expense ratio.

Dividends

FSST vs. MSTZ - Dividend Comparison

Neither FSST nor MSTZ has paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021
FSST Fidelity Sustainability U.S. Equity ETF	0.10%	0.19%	2.01%	0.68%	1.00%	0.34%
MSTZ T-REX 2X Inverse MSTR Daily Target ETF	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FSST and MSTZ in my portfolio?

FSST and MSTZ have a correlation of -0.22, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, FSST or MSTZ?

On fees, FSST is cheaper at 0.59% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, FSST or MSTZ?

FSST is cheaper with a 0.59% expense ratio, compared with 1.05% for MSTZ.

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

FSST has the higher dividend yield at 0.10%, compared with 0.00% for MSTZ.

What is the main difference between FSST and MSTZ?

FSST is categorized as Sustainable, while MSTZ is Inverse Equities. They also come from different issuers: Fidelity and REX. Their fees differ too: 0.59% for FSST and 1.05% for MSTZ.