RBLU vs. MUU

Last updated Jun 24, 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. At a correlation of -0.20, they often move in opposite directions. 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

RBLU

• 1D: -0.87%
• 1M: -8.69%
• YTD: -76.56%
• 6M: -76.79%
• 1Y: -88.85%
• 3Y*: —
• 5Y*: —
• 10Y*: —

MUU

• 1D: -26.28%
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

RBLU vs. MUU - Yearly Performance Comparison

	2026 (YTD)
RBLU T-Rex 2X Long RBLX Daily Target ETF	3.96%
MUU Direxion Daily MU Bull 2X Shares	-12.11%

Correlation

The correlation between RBLU and MUU is -0.20, 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 (All Time) Calculated using the full available price history since Jun 16, 2026	-0.20

Return for Risk

RBLU vs. MUU — Risk / Return Rank

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

RBLU

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

MUU

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

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.

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	-0.72	—	—
Sortino ratio: Return per unit of downside risk	-1.48	—	—
Omega ratio: Gain probability vs. loss probability	0.82	—	—
Calmar ratio: Return relative to maximum drawdown	-0.94	—	—
Martin ratio: Return relative to average drawdown	-1.36	—	—

Drawdowns

RBLU vs. MUU - Drawdown Comparison

The maximum RBLU drawdown since its inception was -94.76%, which is greater than MUU's maximum drawdown of -26.28%. 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	-94.76%	-26.28%	-68.48%
Max Drawdown (1Y) Largest decline over 1 year	-94.76%	—	—
Current Drawdown Current decline from peak	-93.45%	-26.28%	-67.17%
Average Drawdown Average peak-to-trough decline	-44.77%	-10.19%	-34.58%
Ulcer Index Depth and duration of drawdowns from previous peaks	65.26%	—	—

Volatility

Volatility by Period

	RBLU	MUU	Difference
Volatility (1M) Calculated over the trailing 1-month period	37.54%	—	—
Volatility (6M) Calculated over the trailing 6-month period	102.64%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	122.97%	295.32%	-172.35%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	118.40%	295.32%	-176.92%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	118.40%	295.32%	-176.92%

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 5.52%, while MUU has not paid dividends to shareholders.

Position	TTM	2025
MUU Direxion Daily MU Bull 2X Shares	0.00%	0.00%
RBLU T-Rex 2X Long RBLX Daily Target ETF	5.52%	1.29%

Frequently Asked Questions

Can I hold both RBLU and MUU in my portfolio?

RBLU and MUU have a correlation of -0.20, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, RBLU or MUU?

On fees, MUU is cheaper at 1.01% per year. The better choice depends on whether you care most about return, fees, risk, or income.

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 5.52%, compared with 0.00% 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.