What Is the EWY ETF? A Trader's Guide to South Korea Exposure

South Korea's KOSPI has more than tripled in 18 months, driven by the same AI infrastructure boom that has made Samsung and SK Hynix the most important memory chip companies on earth.

The iShares MSCI South Korea ETF — ticker EWY — is how most international investors accessed that rally. It has returned over 109% year-to-date in 2026 and over 240% in the past year.

Whether you are long, short, or trying to understand what you own, this guide covers everything: the holdings, the thesis, the risks, and how to trade it with leverage on BitMEX.

In this guide:

• What is the EWY ETF and how does it work?

• What does EWY hold? The top 10 holdings breakdown

• What index does EWY track? MSCI Korea 25/50 explained

• Why has EWY surged? The Korea trade thesis

• EWY performance: returns, sectors, and valuation

• EWY vs DRAM vs FLKR: which Korea or memory ETF is right for you?

• How to trade EWYUSDT perpetuals on BitMEX

What Is the EWY ETF?

EWY is the ticker for the iShares MSCI South Korea ETF, an exchange-traded fund that provides exposure to South Korean equities for international investors. It is managed by BlackRock under the iShares brand, launched on May 9, 2000, and trades on NYSE Arca in U.S. dollars. With $24.1 billion in assets under management as of May 2026, EWY is by far the largest and most liquid vehicle for South Korea exposure available to non-Korean investors.

The fund holds 81 equity positions drawn from South Korea's large- and mid-cap equity market (97 total securities including a KRW cash position and derivatives), but in practice behaves like a concentrated semiconductor play. The top two positions – SK Hynix and Samsung Electronics – account for over 54% of the fund by weight, meaning EWY's daily performance is almost entirely driven by two companies.

EWY at a Glance

What Does EWY Hold?

EWY is not a diversified Korea basket. It is a concentrated bet on memory semiconductors with a country ETF label. The top two holdings – SK Hynix and Samsung Electronics – account for approximately 54.6% of the fund. No other position exceeds 3.3%.

SK Hynix (30.58% of NAV) is the world's leading supplier of HBM (High Bandwidth Memory) chips, the critical component inside Nvidia's AI GPUs. Samsung Electronics (24.04%) is the world's largest memory chip maker and recently crossed the $1 trillion market capitalisation threshold. Together, they form both the engine of South Korea's export economy and the core of this ETF.

Below the chip duopoly, the portfolio thins quickly. SK Square (3.26%) is a holding company for SK Group's investment assets. Samsung Electro-Mechanics (2.72%) makes camera modules and multilayer ceramic capacitors. Hyundai Motor (2.38%) represents Korea's auto export sector. The balance of the top 10 spans banking (KB Financial, Shinhan Financial), energy and nuclear (Doosan Enerbility), defense (Hanwha Aerospace), automotive parts (Hyundai Mobis), and batteries (Samsung SDI).

Table 1. EWY Top 10 Holdings as of May 28, 2026. Top 10 combined weight: approximately 69%. Source: stockanalysis.com / iShares.

What Index Does EWY Track?

EWY tracks the MSCI Korea 25/50 Index, a free-float-adjusted market-cap-weighted benchmark covering the large- and mid-cap segments of the South Korean equity market. The “25/50” in the name refers to concentration caps designed to maintain RIC (Regulated Investment Company) compliance under U.S. tax law: no single issuer can exceed 25% of the index, and all issuers that individually exceed 5% cannot collectively exceed 50%.

In practice, these caps are binding. Without them, SK Hynix and Samsung would likely consume 60% or more of the index given their combined market capitalisation. The 25/50 structure forces the index – and EWY – to trim the two mega-cap positions quarterly and redistribute weight down the cap curve. This slightly overweights mid-tier names like Hyundai Motor, KB Financial, and Hanwha Aerospace relative to pure market-cap weighting.

The index rebalances quarterly in February, May, August, and November. Reconstitution typically affects only a handful of names on the margin.

EWY vs KOSPI: not the same thing. EWY does not track the KOSPI 200 directly. The MSCI Korea 25/50 Index differs in three important ways: it applies free-float adjustments that exclude shares held by controlling families and cross-holdings; it imposes the 25/50 concentration caps; and it screens for international investor accessibility. Additionally, EWY is priced in USD. A 5% Korean won depreciation against the dollar creates approximately 5% drag on EWY's USD return independent of any equity price movement.

Why is EWY Up So Much This Year?

The thesis behind EWY's rally has three legs: AI memory demand, structural governance reform, and geopolitical repositioning.

The AI memory supercycle

AI training runs are memory-bandwidth constrained. Every Nvidia H100 and H200 GPU requires High Bandwidth Memory (HBM) chips stacked inside the package. SK Hynix supplies the majority of HBM3e chips powering Nvidia's current generation of AI accelerators, and Samsung is closing the gap. With hyperscaler capex (Microsoft, Google, Amazon, Meta) still accelerating and AI data centre buildouts expected to run through the end of the decade, HBM demand has grown faster than supply. Memory prices are rising and Korean chipmaker margins are at record levels.

Goldman Sachs called South Korea its “highest conviction view” in Asia in May 2026, raising its 12-month KOSPI target to 9,000 — roughly 20% above levels at time of writing.

"The prospect of sustained high profits for the semiconductor memory sector suggests the market is mispricing the durability of earnings. We now expect hardware and semiconductor stocks to drive South Korean corporate earnings growth of 300% in 2026." — Goldman Sachs Equity Research, May 2026

The Korea Discount is compressing

Korean equities have historically traded at a persistent discount to global peers — a consequence of opaque chaebol governance structures, poor shareholder returns, and complex cross-shareholdings. Seoul's Corporate Value-up Program, introduced in 2024, has begun to change this. Samsung Electronics dissolved its controversial cross-shareholding structure. Chaebols have begun paying larger dividends, cancelling treasury shares, and improving board independence.

Geopolitical repositioning

South Korea's alignment with the United States in an era of strategic competition has drawn institutional investment flows into the country's defense and semiconductor sectors. Hanwha Aerospace and LIG Nex1 (both present in EWY) are seeing record export orders from NATO-aligned nations rearming in response to European security concerns. Korea is no longer seen purely as a chip factory; the country is becoming a more diversified strategic asset within global institutional portfolios.

EWY Performance: Returns, Sectors, and Valuation

EWY's recent performance is not something that appears in most ETF histories. The fund has returned over 109% year-to-date through May 28, 2026, and over 240% on a total-return basis over the past 12 months. In calendar year 2025 alone, EWY returned approximately 97.6%.

Table 2. EWY Return Profile. Source: Yahoo Finance, stockanalysis.com.

Sector breakdown:

• Information Technology consumes 61.55% of the portfolio, dominated by semiconductor exposure.

• Industrials follow at 16.1%, driven by defense and shipbuilding names.

• Financial Services accounts for 7.75%.

When you buy EWY, you are not buying a diversified view on the Korean economy. You are buying memory chips, with an overlay of heavy industry and banking.

Valuation:

• On current earnings, EWY trades at a forward P/E of 27.67x and a price-to-book of 3.20x.

• The trailing 12-month dividend yield is 1.29%.

• The three-year standard deviation is 38.14% and the equity beta is 1.63, meaning EWY has moved roughly 1.6x the volatility of the broad market.

This is a high-beta, high-conviction vehicle — it accelerates on risk-on days and bleeds faster than the market on risk-off days. The fund dropped 26.7% in 2022 and 20.8% in 2024.

EWY vs DRAM vs FLKR: Which Korea or Memory ETF Is Right for You?

Three products attract the most trading attention in the Korea/memory ETF universe: EWY (the default South Korea ETF), DRAM (the Roundhill Memory ETF, launched April 2, 2026), and FLKR (the Franklin FTSE South Korea ETF, the lowest-cost Korea ETF). They are not interchangeable.

Table 3. EWY vs DRAM vs FLKR comparison. Data as of May 28–29, 2026. Sources: stockanalysis.com, Roundhill Investments, Franklin Templeton.

When EWY wins: You want Korea-specific exposure, maximum liquidity, and a functioning options market for hedging or income strategies. EWY's $24.1B AUM and 17.6M daily average volume mean institutional-grade bid/ask spreads. It is the only one of the three with deep, liquid options chains, making it the standard instrument for tactical positioning, protected downside, and covered calls on Korean semiconductor exposure.

When DRAM wins: Your thesis is specifically about global memory chip pricing rather than Korean equities broadly. DRAM holds only 18 positions and includes Micron (U.S., via swap derivatives) and Kioxia (Japan) alongside SK Hynix and Samsung, giving you purer global memory exposure with less Korea-specific political or currency risk. Note that DRAM only launched in April 2026 — it has no multi-year track record yet, though its $11.6B AUM signals rapid institutional adoption. The fund uses derivatives, which carries counterparty risk not present in EWY or FLKR.

When FLKR wins: You are a long-term passive holder and the 0.59% vs 0.09% expense ratio difference matters. That 50 basis point gap compounds significantly: on a $100,000 position held for five years, EWY costs approximately $2,500 more in management fees than FLKR at equivalent performance. FLKR has 161 holdings versus EWY's 97, giving it slightly more diversification within Korea. The tradeoff: FLKR has roughly $994M in AUM against EWY's $24.1B — far lower liquidity, no meaningful options market, and wider spreads on large orders.

How to Trade EWY on BitMEX: EWYUSDT Perpetuals

The EWYUSDT Equity Perp on BitMEX delivers the same Samsung and SK Hynix exposure as spot EWY, settled in USDT, with up to 20x leverage and no expiration date. For traders who want directional exposure on the Korea trade without the friction of U.S. market hours or ETF custody, it is the most direct vehicle available.

Reasons traders use EWYUSDT Equity Perps over traditional brokers:

• 24/7 trading: EWY only trades during NYSE Arca hours (9:30am–4:00pm ET). EWYUSDT perpetuals trade 24/7/365, including during KOSPI overnight sessions when Korean corporate news or macro data breaks.

• Up to 20x leverage: Korean stock market caps leverage at 2x for domestic assets with a 50% margin. With BitMEX, you can amplify your position up to 20x.

• No custody or brokerage account required: Crypto collateral, no USD or KRW brokerage account, no cross-border custody rules.

• Instant bidirectional access: Feeling the AI bubble popping? Short the trade as easily as going long. Shorting EWY on traditional brokers requires locating shares and paying a borrow rate.

Step-by-step: opening an EWYUSDT position on BitMEX:

Log in to BitMEX and navigate to the EWYUSDT contract under TradFi

If you haven’t signed up for a BitMEX account yet, we’re currently offering $5,050 worth of trading credits to new users - you can register here.

Select your leverage, order type, and margin mode

Traders can use two primary order types:

• Limit orders, which post to the order book

• Market orders, which execute immediately at the best available price on the order book

Leverage & Margin Mode

The EWYUSDT Equity Perp on BitMEX allows for up to 20x leverage

Traders must choose a margin mode:

• Isolated Margin limits risk to the collateral assigned to that specific trade

• Cross Margin uses the entire account balance as collateral for all open positions.

Learn more about margin types here.

Define your stop-loss before entry

EWY has moved 5%+ in a single session repeatedly this year. At 5x leverage that translates to a 25% position drawdown in one day.

Monitor your position

Navigate to the overview panel to view your liquidation price and breakeven price.

Frequently Asked Questions

What is the EWY ETF?

EWY is the ticker for the iShares MSCI South Korea ETF, an exchange-traded fund managed by BlackRock that provides international investors with exposure to South Korean equities. It tracks the MSCI Korea 25/50 Index, which covers approximately 97 large- and mid-cap Korean stocks. EWY is the largest and most liquid South Korea ETF available to U.S. and international investors, with $24.1 billion in assets under management as of May 2026. Despite holding 81 equity holdings, the fund behaves primarily like a two-stock position: SK Hynix and Samsung Electronics together account for approximately 54.6% of the portfolio by weight. The fund trades on NYSE Arca in U.S. dollars, charges a 0.59% annual expense ratio, and has an average daily volume of roughly 17.6 million shares.

Why is EWY ETF down (or up) sharply today?

EWY moves for one of three reasons. First, semiconductor-specific news: memory pricing data, earnings guidance from Samsung or SK Hynix, Nvidia order updates, or export control announcements affecting chip trade between Korea and China. Second, Korea macro moves: KRW depreciation against the USD, KOSPI selloffs driven by geopolitical tension or foreign investor outflows, or Bank of Korea policy surprises. Third, broad emerging market risk-off: when USD strengthens and EM funds deleverage, EWY — as the largest and most liquid single-country EM ETF — tends to get sold first. To diagnose a given move: check whether Samsung and SK Hynix are down in Seoul trading, whether USD/KRW is rising (weaker won), and whether the broader EM complex (EEM, IEMG) is selling off in parallel.

Does EWY track the KOSPI?

Not directly. EWY tracks the MSCI Korea 25/50 Index, which differs from the KOSPI 200 in three important ways: it applies free-float adjustments that exclude shares held by controlling shareholders and cross-holdings; it imposes 25/50 concentration caps (no single issuer above 25%, all issuers above 5% capped collectively at 50%); and it screens for international investor accessibility. The practical result is a portfolio that overlaps heavily with KOSPI but is not identical — it is somewhat underweight Samsung and SK Hynix relative to their true KOSPI weight, and slightly overweight mid-tier names. Additionally, because EWY is priced in USD, a 5% depreciation in the Korean won against the dollar creates approximately 5% drag on EWY's USD NAV, independent of any equity price change.

What is the reason SMH and EWY are both surging?

Both are proxies for AI infrastructure spending but through different parts of the supply chain. SMH (VanEck Semiconductor ETF) holds Nvidia, ASML, TSMC, and the U.S. and Taiwanese chip design and equipment supply chain. EWY holds SK Hynix and Samsung — the companies that manufacture the HBM memory chips installed inside those Nvidia GPUs. AI training runs are memory-bandwidth constrained: every AI accelerator requires multiple HBM chips stacked directly on the package. HBM supply is tight and highly concentrated — SK Hynix and Samsung together control the vast majority of the market. As hyperscaler AI capex accelerates, memory pricing and Korean chipmaker margins have moved sharply higher. SMH captures chip design and logic; EWY captures the memory layer. Both reflect the same AI capex cycle from different positions in the supply chain.

When does EWY report earnings?

EWY is an ETF and does not report earnings itself. What moves it are the quarterly earnings of its underlying holdings, primarily Samsung Electronics (005930.KS) and SK Hynix (000660.KS). Samsung typically releases preliminary quarterly earnings data in the first week of each new quarter — around the 7th–8th of January, April, July, and October — followed by full financials three to four weeks later. SK Hynix follows a similar calendar. These dates are the primary catalysts for large single-day EWY moves. Memory pricing announcements, HBM order updates from Nvidia, and changes in hyperscaler AI capex guidance also serve as material catalysts outside formal earnings windows.

How do I short EWY?

Three practical approaches. First, buy put options on EWY through a U.S. brokerage — EWY has one of the most liquid options markets among single-country ETFs, with tight spreads and meaningful open interest several months out. Second, short EWY shares directly through a margin account; borrow rates can spike during high-demand periods. Third — and the most capital-efficient method for traders outside the U.S. — short EWYUSDT perpetuals on BitMEX. This requires no share borrow, no margin account, and executes instantly at any hour of the day or night. For traders who want to hedge an existing EWY long or express a bearish view on Korean semiconductor margins, EWYUSDT shorts on BitMEX are the most frictionless route.

EWY vs FLKR: which South Korea ETF is better?

It depends on your holding period and trading needs. FLKR (Franklin FTSE South Korea ETF) charges just 0.09% annually versus EWY's 0.59% — a 50 basis point difference that amounts to roughly $2,500 more per $100,000 held over five years in management fees alone. FLKR also holds 161 stocks versus EWY's 97, providing slightly more diversification within Korea. For long-term passive investors, FLKR is the rational cost choice. For active traders, the calculus reverses: EWY has $24.1B in AUM against FLKR's ~$994M, deep and liquid options chains that FLKR lacks entirely, and institutional-grade bid/ask spreads. Anyone who trades tactically, writes covered calls, or needs to hedge via options should be in EWY, not FLKR.

Should I buy EWY or use EWYUSDT perpetuals on BitMEX?

The right answer depends on use case. Spot EWY suits investors who want Korea exposure in a standard brokerage account, those who want the 1.29% dividend yield, and those who use EWY's options market for hedging or income. EWYUSDT perpetuals on BitMEX suit active traders who want leverage up to 10x, those who need to trade around overnight Korean market events outside NYSE hours, traders who want to short the Korea trade without locating shares, and crypto-native traders who prefer USDT collateral. The underlying exposure — driven by Samsung and SK Hynix — is the same in both instruments. The structure, hours, capital requirements, and risk profile are meaningfully different.