PortfoliosLab logoPortfoliosLab logo

Documentation

Upgrade your plan
DRAM vs. EWY
Performance
Return for Risk
Drawdowns
Volatility
Dividends

DRAM vs. EWY

Last updated Aug 1, 2026
Documentation

DRAM (Roundhill Memory ETF) and EWY (iShares MSCI South Korea ETF) are both exchange-traded funds - DRAM is a Technology Equities fund actively managed by Roundhill, while EWY is a South Korea Equities fund tracking the MSCI Korea Index. DRAM is actively managed, while EWY is passively managed. Their correlation of 0.94 means they have usually moved in the same direction. DRAM charges 0.65%/yr vs 0.59%/yr for EWY.

Performance

DRAM vs. EWY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Roundhill Memory ETF (DRAM) and iShares MSCI South Korea ETF (EWY). The values are adjusted to include any dividend payments, if applicable.

Loading charts...

Returns By Period

DRAM

1D
-3.76%
1M
-16.92%
6M
—
YTD
—
1Y
—
3Y*
—
5Y*
—
10Y*
—
ALL TIME*
—

EWY

1D
-2.55%
1M
-12.79%
6M
28.34%
YTD
61.59%
1Y
127.36%
3Y*
35.68%
5Y*
14.47%
10Y*
13.13%
ALL TIME*
9.64%
*Multi-year figures are annualized to reflect compound growth (CAGR)

Liquidity Comparison

PositionAvg. Volume Value (2W)Avg. Volume Value (1M)Avg. Volume Value (3M)

DRAM

Roundhill Memory ETF
$4.23B$4.59B$3.52B

EWY

iShares MSCI South Korea ETF
$4.45B$4.55B$4.16B

DRAM vs. EWY - Yearly Performance Comparison

2026 (YTD)
DRAM
Roundhill Memory ETF		86.56%
EWY
iShares MSCI South Korea ETF		24.47%

Correlation

The correlation between DRAM and EWY is 0.94, meaning they have usually moved in the same direction, including during past declines.

Correlation
Correlation (All Time)
Calculated using the full available price history since Apr 2, 2026

0.94

DRAM vs. EWY - Sectors Allocation Comparison

Sectors
DRAM
EWY

Technology

100.0%
54.1%

Basic Materials

-

2.2%

Communication Services

-

2.9%

Consumer Cyclical

-

5.9%

Consumer Defensive

-

2.2%

Energy

-

1.0%

Healthcare

-

3.6%

Industrials

-

15.7%

Real Estate

-

-

Utilities

-

0.4%

Financial Services

-2.3%
11.4%

Technology

DRAM
100.0%
EWY
54.1%

Basic Materials

DRAM

-

EWY
2.2%

Communication Services

DRAM

-

EWY
2.9%

Consumer Cyclical

DRAM

-

EWY
5.9%

Consumer Defensive

DRAM

-

EWY
2.2%

Energy

DRAM

-

EWY
1.0%

Healthcare

DRAM

-

EWY
3.6%

Industrials

DRAM

-

EWY
15.7%

Real Estate

DRAM

-

EWY

-

Utilities

DRAM

-

EWY
0.4%

Financial Services

DRAM
-2.3%
EWY
11.4%

Compare stocks, funds, or ETFs

Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.

Roundhill Memory ETF

iShares MSCI South Korea ETF

Often compared with DRAM:
DRAM vs. SMHDRAM vs. MUDRAM vs. SOXXDRAM vs. SOXQDRAM vs. AISDRAM vs. QTUMDRAM vs. SOXL
Often compared with EWY:
EWY vs. FLKREWY vs. SPYEWY vs. EWJEWY vs. KORUEWY vs. EWTEWY vs. QQQEWY vs. EWH

Return for Risk

DRAM vs. EWY — Risk / Return Rank

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

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

EWY
EWY Risk / Return Rank: 8686
Overall Rank
EWY Sharpe Ratio Rank: 9090
Sharpe Ratio Rank
EWY Sortino Ratio Rank: 8080
Sortino Ratio Rank
EWY Omega Ratio Rank: 8484
Omega Ratio Rank
EWY Calmar Ratio Rank: 8888
Calmar Ratio Rank
EWY Martin Ratio Rank: 8787
Martin Ratio Rank
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.

DRAM vs. EWY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Roundhill Memory ETF (DRAM) and iShares MSCI South Korea ETF (EWY). 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.

DRAMEWYDifference
Sharpe ratioReturn per unit of total volatility

—

2.24

—

Sortino ratioReturn per unit of downside risk

—

2.59

—

Omega ratioGain probability vs. loss probability

—

1.36

—

Calmar ratioReturn relative to maximum drawdown

—

3.55

—

Martin ratioReturn relative to average drawdown

—

12.67

—

DRAM vs. EWY - Sharpe Ratio Comparison

Loading charts...

Drawdowns

DRAM vs. EWY - Drawdown Comparison

The maximum DRAM drawdown since its inception was -44.44%, smaller than the maximum EWY drawdown of -74.14%. Use the drawdown chart below to compare losses from any high point for DRAM and EWY.

Loading charts...

Drawdown Indicators

DRAMEWYDifference

Max Drawdown

Largest peak-to-trough decline

-44.44%

-74.14%

+29.70%

Max Drawdown (1Y)

Largest decline over 1 year

—

-34.21%

—

Max Drawdown (3Y)

Largest decline over 3 years

—

-34.21%

—

Max Drawdown (5Y)

Largest decline over 5 years

—

-47.15%

—

Max Drawdown (10Y)

Largest decline over 10 years

—

-49.73%

—

Current Drawdown

Current decline from peak

-37.60%

-28.33%

-9.27%

Average Drawdown

Average peak-to-trough decline

-10.50%

-20.10%

+9.60%

Ulcer Index

Depth and duration of drawdowns from previous peaks

—

9.56%

—

Volatility

DRAM vs. EWY - Volatility Comparison

Loading charts...

Volatility by Period

DRAMEWYDifference

Volatility (1M)

Calculated over the trailing 1-month period

—

22.08%

—

Volatility (6M)

Calculated over the trailing 6-month period

—

50.88%

—

Volatility (1Y)

Calculated over the trailing 1-year period

100.96%

54.29%

+46.67%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

100.96%

32.77%

+68.19%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

100.96%

29.38%

+71.58%

DRAM vs. EWY - Expense Ratio Comparison

DRAM has a 0.65% expense ratio, which is higher than EWY's 0.59% expense ratio.

Dividends

DRAM vs. EWY - Dividend Comparison

DRAM has not paid dividends to shareholders, while EWY's dividend yield for the trailing twelve months is around 1.30%.

PositionTTM20252024202320222021202020192018201720162015
DRAM
Roundhill Memory ETF		0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%
EWY
iShares MSCI South Korea ETF		1.30%2.10%2.55%2.52%1.23%2.16%0.73%2.10%1.34%2.90%1.21%2.42%

Frequently Asked Questions

With a correlation of 0.94, DRAM and EWY move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

On fees, EWY is cheaper at 0.59% per year. The better choice depends on whether you care most about return, fees, risk, or income.

EWY is cheaper with a 0.59% expense ratio, compared with 0.65% for DRAM.

EWY has the higher dividend yield at 1.30%, compared with 0.00% for DRAM.

DRAM is categorized as Technology Equities, while EWY is South Korea Equities. They also come from different issuers: Roundhill and iShares. Their fees differ too: 0.65% for DRAM and 0.59% for EWY.

Portfolio Optimizer

Find the right allocation for DRAM and EWY

Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.

Open Portfolio Optimizer