Definition

An American Depositary Receipt (ADR) is a negotiable certificate issued by a US depositary bank that represents a specified number of shares in a foreign company, held by that bank or its custodian in the company's home market, and traded on US exchanges in US dollars.

Source: US Securities and Exchange Commission, Investor Bulletin on American Depositary Receipts.

Shares are issued under the law of the market that lists them. A share admitted to trading in Seoul settles in Korean won, through Korean clearing infrastructure, during Korean hours. It cannot be transferred onto a US exchange, because the two systems have separate registries, currencies, and settlement conventions.

The depositary receipt is the mechanism that bridges them without moving the underlying share. A US bank acquires shares in the home market and holds them in custody; against that custody position, it issues certificates in the United States. Those certificates trade in dollars, settle through US clearing, and follow US market hours, while the shares behind them never leave their home jurisdiction.

How an ADR Is Created

1. The depositary bank acquires the underlying shares. In a capital-raising listing, the company issues new shares directly to the depositary. In a secondary program, the bank or a broker buys existing shares on the home exchange.

2. Shares are lodged with a local custodian. A bank in the home market holds the shares and confirms the position to the depositary.

3. The depositary issues receipts against the custody position. Each receipt represents a defined number of underlying shares, fixed by the deposit agreement.

4. The receipts trade on a US venue. Exchange-listed programs trade on the NYSE or Nasdaq and require registration with the SEC and reporting under US rules. Unlisted programs trade over the counter with lighter disclosure.

The ratio between receipts and shares is a design choice, not a constant, and assuming one-to-one is the most common error in reading an ADR quote. Depositaries set the ratio to place the per-receipt price in a range familiar to US investors. SK Hynix’s Nasdaq program uses ten ADRs per common share; other programs use one receipt per multiple shares in the opposite direction. The ratio determines what a quoted ADR price means relative to the home-market share price and must be checked before comparing the two.

Program typeWhere it tradesCompany involvementDisclosure
Level IOver the counterSponsored or unsponsoredMinimal; home-market reporting
Level IINYSE or NasdaqSponsoredSEC registration, Form 20-F
Level IIINYSE or NasdaqSponsored, raises new capitalSEC registration, Form 20-F, offering prospectus
Rule 144APrivate placementSponsoredQualified institutional buyers only

A sponsored program is established by the company itself under a deposit agreement with a single depositary. An unsponsored program is created by a bank without the company’s participation, and multiple competing unsponsored programs can exist for the same issuer. Sponsored programs carry better disclosure and clearer voting arrangements.

Why Companies Issue ADRs

Access to the deepest pool of investable capital. US public equity markets aggregate pension assets, retirement accounts, mutual funds, and institutional mandates on a scale no other single market matches. A capital-raising listing converts that access into cash for the balance sheet.

Inclusion in US mandates. Many US institutional funds are restricted from holding securities that do not trade on a US exchange or settle in dollars. A Level II or III program makes the company eligible for holdings it was previously excluded from.

Analyst coverage and visibility. A US listing brings sell-side coverage, index consideration, and pricing that runs during US trading hours.

The cost is regulatory. Exchange-listed programs require SEC registration, annual reporting on Form 20-F, and reconciliation to standards US investors expect. Companies accept the disclosure burden when the capital access justifies it.

What an ADR Holder Actually Owns

An ADR conveys the economic interest in the underlying shares. Price movements in the home market pass through, adjusted for the ratio and the exchange rate. Dividends declared in the home currency are converted and distributed in dollars. Voting rights depend on the deposit agreement; in most sponsored programs the depositary solicits instructions and votes accordingly, and in some programs voting is limited or absent.

Two costs attach that a domestic share does not carry:

Currency translation. The company earns, reports, and is valued in its home currency. The ADR is priced in dollars. If the home currency depreciates against the dollar, the dollar value of the position falls even when the underlying share price is unchanged. If it appreciates, the position gains. This exposure is unhedged in a standard ADR and is frequently the largest source of divergence between an ADR’s return and the home-listed share’s return.

Depositary service fees. The depositary charges for maintaining the program, typically $0.01 to $0.05 per ADR annually, deducted from dividend payments or billed through the broker for non-dividend-paying issuers. The amounts are small but recur.

Home-market risk does not disappear. Regulation, tax policy, political developments, and economic conditions in the company’s jurisdiction reach the ADR in full, because they reach the business.

Common Mistakes and Misconceptions

“One ADR equals one share.” Ratios vary widely by program and are set in the deposit agreement. SK Hynix’s Nasdaq program is ten ADRs per common share. Comparing an ADR price directly to a home-market share price without applying the ratio produces a meaningless number.

“The ADR price should exactly match the converted home-market price.” Arbitrage keeps the two closely aligned, because ADRs can be created and cancelled against the underlying shares. Small deviations persist during hours when the home market is closed, and larger ones appear when creation or cancellation is restricted.

“ADRs remove foreign risk.” The dollar denomination changes the settlement currency, not the exposure. Currency translation, home-country regulation, and local political risk all pass through.

“An unsponsored ADR is equivalent to a sponsored one.” Unsponsored programs are created by banks without the issuer’s involvement, may carry weaker disclosure, and can have unclear or absent voting arrangements. Multiple unsponsored programs for one issuer can trade simultaneously with different ratios.

“A large listing signals a good entry price.” Deal size measures how much capital the company raised, not whether the price is attractive. The two are unrelated.

Example: SK Hynix on Nasdaq, July 2026

SK Hynix, the South Korean memory chipmaker supplying high-bandwidth memory for AI accelerators, filed confidentially for a US listing in March 2026 and completed the offering on July 10, 2026.

The transaction: 177.9 million ADRs priced at $149 each, raising $26.5 billion. Ten ADRs represent one SK Hynix common share. The order book was reported as more than seven times oversubscribed before pricing. The company stated that proceeds would fund manufacturing expansion in South Korea and equipment purchases including extreme ultraviolet lithography scanners.

At $26.5 billion, it stands as the largest US share sale completed by a foreign company, exceeding the approximately $25 billion Alibaba raised in its 2014 New York listing.

What a US buyer holds after the offering is one-tenth of a common share per ADR, priced in dollars, with the Korean won exposure intact. If the won weakens 10% against the dollar while the Seoul-listed share is flat, the ADR falls roughly 10% in dollar terms. The company’s operating exposure to Korean regulation, Korean labor costs, and the memory cycle is unchanged by the listing venue.

The subsequent price action illustrates a separate point. Large, heavily oversubscribed offerings frequently trade well above the offer price on debut and then reprice as the initial demand imbalance clears. Oversubscription measures order book depth at a moment, not durable valuation.

Check the Ratio First

Before comparing an ADR price to the home-listed share, find the ratio in the deposit agreement or the depositary's program page. Ten-to-one, one-to-one, and one-to-four all exist. Every per-share metric — earnings, dividends, book value — must be adjusted by it.

How Cluenex Covers US-Listed Foreign Issuers

Cluenex analyzes the top 1,000+ US-listed stocks, a universe that includes exchange-listed depositary receipts alongside domestic issuers. The same inputs apply: financial statement data, discounted cash flow and owner earnings valuation, moat scoring, sentiment, earnings timing, and insider and congressional trading activity, producing short-term and long-term prediction scores.

Two limitations are specific to depositary receipts. Currency translation sits outside a company-level valuation model — a DCF of a Korean issuer values won-denominated cash flows, and the dollar outcome depends on an exchange rate no equity model forecasts. And insider and congressional trading data derives from SEC filings, which cover US-reportable persons; insider activity in the home market follows local disclosure rules and appears on a different schedule, if at all.

Frequently Asked Questions

  • What is an American Depositary Receipt? An ADR is a certificate issued by a US depositary bank representing a specified number of shares in a foreign company that the bank holds in custody in the company’s home market. The certificate trades on a US exchange in US dollars during US hours, while the underlying shares remain in their home jurisdiction.

  • Does one ADR equal one foreign share? Not usually. The ratio is set in the deposit agreement and chosen to place the per-receipt price in a conventional range. SK Hynix’s Nasdaq program uses ten ADRs per common share. Every per-share figure must be adjusted by the ratio before comparison.

  • Do ADR holders face currency risk? Yes. The company’s results are denominated in its home currency while the ADR is priced in dollars, so exchange rate movement changes the dollar value of the position independently of the underlying share price. Standard ADRs are unhedged.

  • What fees do ADRs charge? Depositary banks levy a service fee, commonly $0.01 to $0.05 per ADR annually, deducted from dividend distributions or billed through the broker when the issuer pays no dividend. The fee is disclosed in the deposit agreement.

  • What is the difference between a sponsored and unsponsored ADR? A sponsored ADR is established by the company under a deposit agreement with one depositary, carries fuller disclosure, and typically passes through voting instructions. An unsponsored ADR is created by a bank without the company’s participation; multiple unsponsored programs can exist for a single issuer with differing ratios and weaker shareholder rights.

  • Can I receive dividends on an ADR? Yes. Dividends declared in the home currency are converted to dollars by the depositary and distributed to holders, net of conversion costs, depositary fees, and any home-country withholding tax. The withholding rate depends on the tax treaty between the US and the issuer’s jurisdiction.

  • Why did SK Hynix list on Nasdaq? SK Hynix raised $26.5 billion on July 10, 2026 to fund manufacturing expansion in South Korea and equipment purchases including EUV lithography scanners. A US listing provides access to the deepest pool of institutional capital and makes the security eligible for US funds restricted to domestically listed instruments.

  • Are ADRs riskier than US stocks? They carry two exposures a domestic share does not: currency translation and home-country regulatory and political risk. The business risk is whatever the underlying company’s risk is. Whether the total is higher depends on the specific issuer, not on the ADR structure.