MYY vs. TSLZ

Last updated Apr 1, 2026

Compare and contrast key facts about ProShares Short S&P Mid Cap400 (MYY) and T-Rex 2X Inverse Tesla Daily Target ETF (TSLZ).

MYY and TSLZ are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. MYY is a passively managed fund by ProShares that tracks the performance of the S&P Mid Cap 400 (-100%). It was launched on Jun 19, 2006. TSLZ is an actively managed fund by T-Rex. It was launched on Oct 18, 2023.

Performance

MYY vs. TSLZ - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ProShares Short S&P Mid Cap400 (MYY) and T-Rex 2X Inverse Tesla Daily Target ETF (TSLZ). The values are adjusted to include any dividend payments, if applicable.

MYY vs. TSLZ - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
MYY ProShares Short S&P Mid Cap400	-1.60%	-4.05%	-7.08%	-12.50%
TSLZ T-Rex 2X Inverse Tesla Daily Target ETF	33.84%	-75.98%	-88.79%	-28.07%

Returns By Period

In the year-to-date period, MYY achieves a -1.60% return, which is significantly lower than TSLZ's 33.84% return.

MYY

• 1D: -2.74%
• 1M: 5.76%
• YTD: -1.60%
• 6M: -2.06%
• 1Y: -12.33%
• 3Y*: -6.45%
• 5Y*: -4.73%
• 10Y*: -10.56%

TSLZ

• 1D: -9.26%
• 1M: 13.19%
• YTD: 33.84%
• 6M: 11.47%
• 1Y: -80.94%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

MYY vs. TSLZ - Expense Ratio Comparison

MYY has a 0.95% expense ratio, which is lower than TSLZ's 1.05% expense ratio.

TSLZ

T-Rex 2X Inverse Tesla Daily Target ETF

MYY

ProShares Short S&P Mid Cap400

Return for Risk

MYY vs. TSLZ — Risk / Return Rank

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

MYY

MYY Risk / Return Rank: 4
MYY Sharpe Ratio Rank: 3
MYY Sortino Ratio Rank: 3
MYY Omega Ratio Rank: 3
MYY Calmar Ratio Rank: 5
MYY Martin Ratio Rank: 7

TSLZ

TSLZ Risk / Return Rank: 2
TSLZ Sharpe Ratio Rank: 2
TSLZ Sortino Ratio Rank: 1
TSLZ Omega Ratio Rank: 1
TSLZ Calmar Ratio Rank: 0
TSLZ Martin Ratio Rank: 4

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.

MYY vs. TSLZ - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ProShares Short S&P Mid Cap400 (MYY) and T-Rex 2X Inverse Tesla Daily Target ETF (TSLZ). 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.

	MYY	TSLZ	Difference
Sharpe ratio Return per unit of total volatility	-0.59	-0.74	+0.15
Sortino ratio Return per unit of downside risk	-0.71	-1.20	+0.49
Omega ratio Gain probability vs. loss probability	0.91	0.85	+0.06
Calmar ratio Return relative to maximum drawdown	-0.45	-0.89	+0.43
Martin ratio Return relative to average drawdown	-0.62	-1.03	+0.41
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MYY vs. TSLZ - Sharpe Ratio Comparison

The current MYY Sharpe Ratio is -0.59, which is comparable to the TSLZ Sharpe Ratio of -0.74. The chart below compares the historical Sharpe Ratios of MYY and TSLZ, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	MYY	TSLZ	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.59	-0.74	+0.15
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.24	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.50	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.51	-0.65	+0.14

Correlation

The correlation between MYY and TSLZ is 0.42, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

MYY vs. TSLZ - Dividend Comparison

MYY's dividend yield for the trailing twelve months is around 4.02%, more than TSLZ's 0.51% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018
MYY ProShares Short S&P Mid Cap400	4.02%	4.20%	4.92%	5.08%	0.40%	0.00%	0.05%	1.52%	0.34%
TSLZ T-Rex 2X Inverse Tesla Daily Target ETF	0.51%	0.69%	2.08%	12.15%	0.00%	0.00%	0.00%	0.00%	0.00%

Drawdowns

MYY vs. TSLZ - Drawdown Comparison

The maximum MYY drawdown since its inception was -94.89%, roughly equal to the maximum TSLZ drawdown of -99.11%. Use the drawdown chart below to compare losses from any high point for MYY and TSLZ.

Drawdown Indicators

	MYY	TSLZ	Difference
Max Drawdown Largest peak-to-trough decline	-94.89%	-99.11%	+4.22%
Max Drawdown (1Y) Largest decline over 1 year	-27.61%	-90.53%	+62.92%
Max Drawdown (5Y) Largest decline over 5 years	-33.82%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-70.14%	—	—
Current Drawdown Current decline from peak	-94.55%	-98.59%	+4.04%
Average Drawdown Average peak-to-trough decline	-71.95%	-73.67%	+1.72%
Ulcer Index Depth and duration of drawdowns from previous peaks	20.28%	77.94%	-57.66%

Volatility

MYY vs. TSLZ - Volatility Comparison

The current volatility for ProShares Short S&P Mid Cap400 (MYY) is 6.47%, while T-Rex 2X Inverse Tesla Daily Target ETF (TSLZ) has a volatility of 22.72%. This indicates that MYY experiences smaller price fluctuations and is considered to be less risky than TSLZ based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MYY	TSLZ	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.47%	22.72%	-16.25%
Volatility (6M) Calculated over the trailing 6-month period	11.92%	58.17%	-46.25%
Volatility (1Y) Calculated over the trailing 1-year period	21.04%	110.01%	-88.97%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.62%	119.13%	-99.51%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.23%	119.13%	-97.90%