Korean Stock & Equity Research

Investing Guides/Account & Access

Korean stocks are identified by 6-digit numeric codes rather than letter-based tickers — Samsung Electronics is 005930, SK Hynix is 000660 — and most major global data platforms (Yahoo Finance, Google Finance, Bloomberg, TradingView) support these codes with a .KS suffix for KOSPI or .KQ for KOSDAQ. This article is part of our Ultimate Guide to Investing in South Korean Stocks for Foreigners. Ho..

Investing Guides/Account & Access

Korea fully resumed short selling on all listed stocks on March 31, 2025, after a 17-month blanket ban imposed in November 2023 following naked short selling violations by several global investment banks. Institutional investors, including foreign funds, now must obtain a unique registration number from the Financial Supervisory Service tied to every short sale order, feeding into a real-time Na..

Investing Guides/Account & Access

ADRs offer US-listed, dollar-denominated exposure to Korean companies without a Korean brokerage account, but ADR pricing can diverge meaningfully from the underlying Seoul-listed shares — SK Hynix's Nasdaq ADR traded at a 49% premium to its Seoul shares within weeks of its July 2026 debut, a gap structural constraints prevented arbitrage from closing. This article is part of our Ultimate Guide ..

Investing Guides/Account & Access

The KOSPI Composite Index tracks all stocks listed on Korea's main board, while the KOSPI 200 tracks only the 200 largest and most liquid of those companies by market capitalization and trading volume. When people casually say "KOSPI is up 2%," they're almost always referring to the Composite; the KOSPI 200 exists primarily as the basis for derivatives products like index futures and options. Th..

Investing Guides/Account & Access

KOSPI is Korea's main board, listing large-cap blue chips like Samsung Electronics and Hyundai Motor, while KOSDAQ is the secondary board for smaller-cap growth, tech, and biotech companies — comparable to how Nasdaq differs from the NYSE. Both are accessible to foreign investors through the same account structure, but they carry different risk, liquidity, and tax profiles. This article is part ..

Investing Guides/Account & Access

Interactive Brokers is currently the most accessible route for non-resident foreign investors to trade Korean stocks directly, following its 2025 investment in Korean brokerage Next Securities specifically to enable this access. Korean-resident foreigners have additional options through local brokerages, while EWY remains the simplest path for anyone wanting to avoid a Korean account entirely.Th..

Investing Guides/Account & Access

EWY (iShares MSCI South Korea ETF) is the simpler choice for most foreign investors, but direct KOSPI ownership offers better tax treatment on dividends and access to stocks outside the index. The right choice depends primarily on how concentrated you're willing to be in Samsung Electronics and SK Hynix. Table of ContentsWhat Is EWY?How Concentrated Is EWY in Two Stocks?EWY vs. Direct Ownership:..

Investing Guides/Account & Access

Foreigners no longer need Korea's old IRC (Investor Registration Certificate) to open a stock trading account — that requirement was abolished on December 14, 2023. Individuals now use their passport number; corporate investors use a Legal Entity Identifier (LEI). Here's exactly how the process works today. Table of ContentsWhat Changed in December 2023?Do I Need an LEI?Three Ways to..