ROBN vs. MULL

Last updated Jun 25, 2026

ROBN (T-REX 2X Long HOOD Daily Target ETF) and MULL (GraniteShares 2x Long MU Daily ETF) are both Leveraged Equities funds. Both are actively managed. Over the past year, ROBN returned -26.78% vs 3263.97% for MULL. At a 0.40 correlation, their price movements are largely independent. ROBN charges 1.05%/yr vs 1.50%/yr for MULL.

Performance

ROBN vs. MULL - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in T-REX 2X Long HOOD Daily Target ETF (ROBN) and GraniteShares 2x Long MU Daily ETF (MULL). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ROBN achieves a -47.10% return, which is significantly lower than MULL's 769.80% return.

ROBN

• 1D: -11.66%
• 1M: 62.27%
• YTD: -47.10%
• 6M: -53.81%
• 1Y: -26.78%
• 3Y*: —
• 5Y*: —
• 10Y*: —

MULL

• 1D: -1.17%
• 1M: 67.02%
• YTD: 769.80%
• 6M: 757.79%
• 1Y: 3,263.97%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

ROBN vs. MULL - Yearly Performance Comparison

	2026 (YTD)	2025
ROBN T-REX 2X Long HOOD Daily Target ETF	-47.10%	124.78%
MULL GraniteShares 2x Long MU Daily ETF	769.80%	476.05%

Correlation

The correlation between ROBN and MULL is 0.30, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.30
Correlation (All Time) Calculated using the full available price history since Jan 31, 2025	0.40

Return for Risk

ROBN vs. MULL — Risk / Return Rank

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

ROBN

ROBN Risk / Return Rank: 10
ROBN Sharpe Ratio Rank: 7
ROBN Sortino Ratio Rank: 15
ROBN Omega Ratio Rank: 14
ROBN Calmar Ratio Rank: 7
ROBN Martin Ratio Rank: 7

MULL

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

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.

ROBN vs. MULL - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for T-REX 2X Long HOOD Daily Target ETF (ROBN) and GraniteShares 2x Long MU Daily ETF (MULL). 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.

	ROBN	MULL	Difference
Sharpe ratio: Return per unit of total volatility	-0.19	22.76	-22.95
Sortino ratio: Return per unit of downside risk	0.71	5.48	-4.78
Omega ratio: Gain probability vs. loss probability	1.08	1.70	-0.61
Calmar ratio: Return relative to maximum drawdown	-0.31	62.37	-62.68
Martin ratio: Return relative to average drawdown	-0.48	200.79	-201.27

ROBN vs. MULL - Sharpe Ratio Comparison

The current ROBN Sharpe Ratio is -0.19, which is lower than the MULL Sharpe Ratio of 22.76. The chart below compares the historical Sharpe Ratios of ROBN and MULL, 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

ROBN vs. MULL - Drawdown Comparison

The maximum ROBN drawdown since its inception was -86.84%, which is greater than MULL's maximum drawdown of -72.29%. Use the drawdown chart below to compare losses from any high point for ROBN and MULL.

Drawdown Indicators

	ROBN	MULL	Difference
Max Drawdown Largest peak-to-trough decline	-86.84%	-72.29%	-14.55%
Max Drawdown (1Y) Largest decline over 1 year	-86.84%	-53.09%	-33.75%
Current Drawdown Current decline from peak	-75.30%	-27.31%	-47.99%
Average Drawdown Average peak-to-trough decline	-44.41%	-20.53%	-23.88%
Ulcer Index Depth and duration of drawdowns from previous peaks	56.05%	16.67%	+39.38%

Volatility

ROBN vs. MULL - Volatility Comparison

The current volatility for T-REX 2X Long HOOD Daily Target ETF (ROBN) is 48.18%, while GraniteShares 2x Long MU Daily ETF (MULL) has a volatility of 74.81%. This indicates that ROBN experiences smaller price fluctuations and is considered to be less risky than MULL based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ROBN	MULL	Difference
Volatility (1M) Calculated over the trailing 1-month period	48.18%	74.81%	-26.63%
Volatility (6M) Calculated over the trailing 6-month period	102.99%	119.35%	-16.36%
Volatility (1Y) Calculated over the trailing 1-year period	140.51%	145.70%	-5.19%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	152.07%	142.32%	+9.75%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	152.07%	142.32%	+9.75%

ROBN vs. MULL - Expense Ratio Comparison

ROBN has a 1.05% expense ratio, which is lower than MULL's 1.50% expense ratio.

Dividends

ROBN vs. MULL - Dividend Comparison

ROBN's dividend yield for the trailing twelve months is around 8.47%, more than MULL's 0.04% yield.

Position	TTM	2025
MULL GraniteShares 2x Long MU Daily ETF	0.04%	0.39%
ROBN T-REX 2X Long HOOD Daily Target ETF	8.47%	4.48%

Frequently Asked Questions

Can I hold both ROBN and MULL in my portfolio?

ROBN and MULL have a correlation of 0.30, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ROBN or MULL?

MULL has higher volatility (74.81%) compared to ROBN (48.18%). In terms of maximum drawdown, ROBN dropped -86.84% vs MULL's -72.29%.

Which ETF is better, ROBN or MULL?

On 1-year performance, MULL leads with 3263.97% vs -26.78% for ROBN. On fees, ROBN is cheaper at 1.05% per year. On volatility, ROBN has been the lower-risk option at 48.18%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, ROBN or MULL?

Over the 1-year period, MULL has performed better with a 3263.97% return vs -26.78%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, ROBN or MULL?

ROBN is cheaper with a 1.05% expense ratio, compared with 1.50% for MULL.

Which ETF pays a higher dividend yield, ROBN or MULL?

ROBN has the higher dividend yield at 8.47%, compared with 0.04% for MULL.

What is the main difference between ROBN and MULL?

They also come from different issuers: T-Rex and GraniteShares. Their fees differ too: 1.05% for ROBN and 1.50% for MULL.

Which has better risk-adjusted returns?

MULL currently has the higher Sharpe Ratio (22.76 vs -0.19), 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.