RBLU vs. MUU

Last updated Aug 4, 2026

RBLU (T-Rex 2X Long RBLX Daily Target ETF) and MUU (Direxion Daily MU Bull 2X Shares) are both Leveraged Equities funds - RBLU tracks the Roblox Corp. Class A (RBLX) while MUU tracks the Micron Technology, Inc. (200% Daily). Both are passively managed. Over the past year, RBLU returned -96.05% vs 2844.73% for MUU. Their 0.10 correlation means their historical movements had little consistent relationship. RBLU charges 1.05%/yr vs 1.01%/yr for MUU.

Performance

RBLU vs. MUU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in T-Rex 2X Long RBLX Daily Target ETF (RBLU) and Direxion Daily MU Bull 2X Shares (MUU). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RBLU achieves a -88.47% return, which is significantly lower than MUU's 378.90% return.

RBLU

• 1D: 6.33%
• 1M: -63.24%
• 6M: -82.19%
• YTD: -88.47%
• 1Y: -96.05%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: -74.71%

MUU

• 1D: 1.35%
• 1M: -35.62%
• 6M: 114.51%
• YTD: 378.90%
• 1Y: 2,844.73%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 419.02%

*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)
MUU Direxion Daily MU Bull 2X Shares	$1.54B	$1.50B	$2.29B
RBLU T-Rex 2X Long RBLX Daily Target ETF	$3.87M	$2.37M	$2.31M

RBLU vs. MUU - Yearly Performance Comparison

	2026 (YTD)	2025
RBLU T-Rex 2X Long RBLX Daily Target ETF	-88.47%	23.90%
MUU Direxion Daily MU Bull 2X Shares	378.90%	558.59%

Correlation

The correlation between RBLU and MUU is 0.04, meaning there was essentially no consistent relationship between their historical price movements. Each responded to its own set of market drivers.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.04
Correlation (All Time) Calculated using the full available price history since Mar 4, 2025	0.10

Return for Risk

RBLU vs. MUU — Risk / Return Rank

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

RBLU

RBLU Risk / Return Rank: 1
RBLU Sharpe Ratio Rank: 3
RBLU Sortino Ratio Rank: 1
RBLU Omega Ratio Rank: 0
RBLU Calmar Ratio Rank: 0
RBLU Martin Ratio Rank: 2

MUU

MUU Risk / Return Rank: 98
MUU Sharpe Ratio Rank: 100
MUU Sortino Ratio Rank: 97
MUU Omega Ratio Rank: 96
MUU Calmar Ratio Rank: 99
MUU Martin Ratio Rank: 99

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.

RBLU vs. MUU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for T-Rex 2X Long RBLX Daily Target ETF (RBLU) and Direxion Daily MU Bull 2X Shares (MUU). 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.

	RBLU	MUU	Difference
Sharpe ratio: Return per unit of total volatility	-0.71	17.89	-18.60
Sortino ratio: Return per unit of downside risk	-2.00	4.98	-6.98
Omega ratio: Gain probability vs. loss probability	0.74	1.63	-0.89
Calmar ratio: Return relative to maximum drawdown	-0.99	42.38	-43.37
Martin ratio: Return relative to average drawdown	-1.34	138.45	-139.79

RBLU vs. MUU - Sharpe Ratio Comparison

The current RBLU Sharpe Ratio is -0.71, which is lower than the MUU Sharpe Ratio of 17.89. The chart below compares the historical Sharpe Ratios of RBLU and MUU, 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

RBLU vs. MUU - Drawdown Comparison

The maximum RBLU drawdown since its inception was -96.97%, which is greater than MUU's maximum drawdown of -75.07%. Use the drawdown chart below to compare losses from any high point for RBLU and MUU.

Drawdown Indicators

	RBLU	MUU	Difference
Max Drawdown Largest peak-to-trough decline	-96.97%	-75.07%	-21.90%
Max Drawdown (1Y) Largest decline over 1 year	-96.92%	-68.07%	-28.85%
Current Drawdown Current decline from peak	-96.78%	-60.98%	-35.80%
Average Drawdown Average peak-to-trough decline	-48.52%	-24.42%	-24.10%
Ulcer Index Depth and duration of drawdowns from previous peaks	71.70%	20.79%	+50.91%

Volatility

RBLU vs. MUU - Volatility Comparison

T-Rex 2X Long RBLX Daily Target ETF (RBLU) has a higher volatility of 82.34% compared to Direxion Daily MU Bull 2X Shares (MUU) at 61.31%. This indicates that RBLU's price experiences larger fluctuations and is considered to be riskier than MUU based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RBLU	MUU	Difference
Volatility (1M) Calculated over the trailing 1-month period	82.34%	61.31%	+21.03%
Volatility (6M) Calculated over the trailing 6-month period	126.24%	133.76%	-7.52%
Volatility (1Y) Calculated over the trailing 1-year period	135.50%	161.53%	-26.03%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	127.71%	146.55%	-18.84%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	127.71%	146.55%	-18.84%

RBLU vs. MUU - Expense Ratio Comparison

RBLU has a 1.05% expense ratio, which is higher than MUU's 1.01% expense ratio.

Dividends

RBLU vs. MUU - Dividend Comparison

RBLU's dividend yield for the trailing twelve months is around 11.23%, more than MUU's 1.42% yield.

Position	TTM	2025	2024
MUU Direxion Daily MU Bull 2X Shares	1.42%	4.27%	0.31%
RBLU T-Rex 2X Long RBLX Daily Target ETF	11.23%	1.29%	0.00%

Frequently Asked Questions

Can I hold both RBLU and MUU in my portfolio?

RBLU and MUU have a correlation of 0.04, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RBLU or MUU?

RBLU has higher volatility (82.34%) compared to MUU (61.31%). In terms of maximum drawdown, RBLU dropped -96.97% vs MUU's -75.07%.

Which ETF is better, RBLU or MUU?

On 1-year performance, MUU leads with 2844.73% vs -96.05% for RBLU. On fees, MUU is cheaper at 1.01% per year. On volatility, MUU has been the lower-risk option at 61.31%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, RBLU or MUU?

Over the 1-year period, MUU has performed better with a 2844.73% return vs -96.05%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, RBLU or MUU?

MUU is cheaper with a 1.01% expense ratio, compared with 1.05% for RBLU.

Which ETF pays a higher dividend yield, RBLU or MUU?

RBLU has the higher dividend yield at 11.23%, compared with 1.42% for MUU.

What is the main difference between RBLU and MUU?

RBLU tracks Roblox Corp. Class A (RBLX), while MUU tracks Micron Technology, Inc. (200% Daily). They also come from different issuers: T-Rex and Direxion. Their fees differ too: 1.05% for RBLU and 1.01% for MUU.

Which has better risk-adjusted returns?

MUU currently has the higher Sharpe Ratio (17.89 vs -0.71), 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.