MSII vs. KORU

Last updated Jun 25, 2026

MSII (REX MSTR Growth & Income ETF) and KORU (Direxion Daily South Korea Bull 3X Shares) are both Leveraged Equities funds. MSII is actively managed, while KORU is passively managed. Over the past year, MSII returned -71.84% vs 789.62% for KORU. At a 0.38 correlation, their price movements are largely independent. MSII charges 0.99%/yr vs 1.29%/yr for KORU.

Performance

MSII vs. KORU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in REX MSTR Growth & Income ETF (MSII) and Direxion Daily South Korea Bull 3X Shares (KORU). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MSII achieves a -28.10% return, which is significantly lower than KORU's 308.29% return.

MSII

• 1D: 0.00%
• 1M: -30.37%
• YTD: -28.10%
• 6M: -30.78%
• 1Y: -71.84%
• 3Y*: —
• 5Y*: —
• 10Y*: —

KORU

• 1D: 5.90%
• 1M: -5.01%
• YTD: 308.29%
• 6M: 341.55%
• 1Y: 789.62%
• 3Y*: 104.57%
• 5Y*: 12.17%
• 10Y*: 15.15%

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

MSII vs. KORU - Yearly Performance Comparison

	2026 (YTD)	2025
MSII REX MSTR Growth & Income ETF	-28.10%	-61.03%
KORU Direxion Daily South Korea Bull 3X Shares	308.29%	242.88%

Correlation

The correlation between MSII and KORU is 0.39, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.39
Correlation (All Time) Calculated using the full available price history since Jun 4, 2025	0.38

Return for Risk

MSII vs. KORU — Risk / Return Rank

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

MSII

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

KORU

KORU Risk / Return Rank: 94
KORU Sharpe Ratio Rank: 98
KORU Sortino Ratio Rank: 86
KORU Omega Ratio Rank: 90
KORU Calmar Ratio Rank: 98
KORU Martin Ratio Rank: 97

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.

MSII vs. KORU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for REX MSTR Growth & Income ETF (MSII) and Direxion Daily South Korea Bull 3X Shares (KORU). 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.

	MSII	KORU	Difference
Sharpe ratio: Return per unit of total volatility	-1.00	5.55	-6.55
Sortino ratio: Return per unit of downside risk	-1.85	3.47	-5.32
Omega ratio: Gain probability vs. loss probability	0.79	1.51	-0.73
Calmar ratio: Return relative to maximum drawdown	-0.91	12.99	-13.90
Martin ratio: Return relative to average drawdown	-1.29	37.77	-39.07

MSII vs. KORU - Sharpe Ratio Comparison

The current MSII Sharpe Ratio is -1.00, which is lower than the KORU Sharpe Ratio of 5.55. The chart below compares the historical Sharpe Ratios of MSII and KORU, 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

MSII vs. KORU - Drawdown Comparison

The maximum MSII drawdown since its inception was -78.73%, smaller than the maximum KORU drawdown of -95.79%. Use the drawdown chart below to compare losses from any high point for MSII and KORU.

Drawdown Indicators

	MSII	KORU	Difference
Max Drawdown Largest peak-to-trough decline	-78.73%	-95.79%	+17.06%
Max Drawdown (1Y) Largest decline over 1 year	-78.73%	-61.39%	-17.34%
Max Drawdown (3Y) Largest decline over 3 years	—	-73.34%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-93.34%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-95.79%	—
Current Drawdown Current decline from peak	-76.65%	-41.40%	-35.25%
Average Drawdown Average peak-to-trough decline	-47.60%	-57.41%	+9.81%
Ulcer Index Depth and duration of drawdowns from previous peaks	55.55%	21.07%	+34.48%

Volatility

MSII vs. KORU - Volatility Comparison

The current volatility for REX MSTR Growth & Income ETF (MSII) is 21.22%, while Direxion Daily South Korea Bull 3X Shares (KORU) has a volatility of 92.24%. This indicates that MSII experiences smaller price fluctuations and is considered to be less risky than KORU based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MSII	KORU	Difference
Volatility (1M) Calculated over the trailing 1-month period	21.22%	92.24%	-71.02%
Volatility (6M) Calculated over the trailing 6-month period	56.59%	138.68%	-82.09%
Volatility (1Y) Calculated over the trailing 1-year period	71.94%	144.21%	-72.27%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	70.49%	91.42%	-20.93%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	70.49%	83.04%	-12.55%

MSII vs. KORU - Expense Ratio Comparison

MSII has a 0.99% expense ratio, which is lower than KORU's 1.29% expense ratio.

Dividends

MSII vs. KORU - Dividend Comparison

MSII's dividend yield for the trailing twelve months is around 85.81%, more than KORU's 0.21% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
KORU Direxion Daily South Korea Bull 3X Shares	0.21%	0.89%	4.10%	2.55%	0.48%	0.76%	0.01%	0.93%	1.40%	3.59%
MSII REX MSTR Growth & Income ETF	85.81%	48.93%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both MSII and KORU in my portfolio?

MSII and KORU have a correlation of 0.39, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MSII or KORU?

KORU has higher volatility (92.24%) compared to MSII (21.22%). In terms of maximum drawdown, MSII dropped -78.73% vs KORU's -95.79%.

Which ETF is better, MSII or KORU?

On 1-year performance, KORU leads with 789.62% vs -71.84% for MSII. On fees, MSII is cheaper at 0.99% per year. On volatility, MSII has been the lower-risk option at 21.22%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, MSII or KORU?

Over the 1-year period, KORU has performed better with a 789.62% return vs -71.84%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, MSII or KORU?

MSII is cheaper with a 0.99% expense ratio, compared with 1.29% for KORU.

Which ETF pays a higher dividend yield, MSII or KORU?

MSII has the higher dividend yield at 85.81%, compared with 0.21% for KORU.

What is the main difference between MSII and KORU?

They also come from different issuers: REX and Direxion. Their fees differ too: 0.99% for MSII and 1.29% for KORU.

Which has better risk-adjusted returns?

KORU currently has the higher Sharpe Ratio (5.55 vs -1.00), 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.