TL;DR. An American Depositary Receipt (ADR) is a U.S.-listed certificate that represents shares of a foreign company sitting in a custody account overseas. A U.S. investor can buy an ADR of TSMC, Alibaba, or Toyota through any American broker, in dollars, during New York hours — without opening a foreign brokerage or fighting time zones. Under the hood, a depositary bank does the plumbing.
What an ADR actually is
According to the U.S. Securities and Exchange Commission, "The stocks of most foreign companies that trade in the U.S. markets are traded as American Depositary Receipts (ADRs)." Each ADR represents "one or more shares of foreign stock or a fraction of a share," and its price "corresponds to the price of the foreign stock in its home market, adjusted to the ratio of the ADRs to foreign company shares." That definition, from investor.gov, is the cleanest one-paragraph description you will find.
Two mechanical facts follow from that definition. First, an ADR is a receipt, not the underlying share. The actual foreign shares are held in custody by a depositary bank — typically BNY Mellon, Citibank, JPMorgan Chase, or Deutsche Bank — and the ADR is a claim on those shares. Second, because the ADR trades in dollars while the underlying trades in local currency, ADR prices move with both the foreign share price and the exchange rate.
ADRs are not new. J.P. Morgan launched the first one in 1927 for British retailer Selfridges, on what was then the New York Curb Exchange, so U.S. investors could hold Selfridges without dealing with London settlement. Nearly a century later, the plumbing is more efficient but the idea is identical: package a foreign share into something a U.S. investor can trade with one click.
How an ADR gets created — and cancelled
An ADR is not printed out of thin air. It exists only because someone deposited the underlying foreign share with the depositary bank. It can also be destroyed — "cancelled" — by giving the ADR back in exchange for the underlying shares. That two-way flow is what keeps the ADR price tethered to the foreign share.
The arbitrage loop matters. Without it, an ADR is just a dollar-denominated proxy that could drift from its underlying value. With it, any material gap between the two prices creates a profit for arbitrageurs, who close the gap. That is why ADRs of highly liquid names like TSMC or Toyota rarely trade more than a fraction of a percent away from parity during regular hours, and why the gaps that do open tend to appear when the home market is closed.
Sponsored vs. unsponsored ADRs
Not every ADR is created with the foreign company's cooperation. Wikipedia's summary of the market is a good starting point (background reference): an unsponsored ADR is set up by a depositary bank without a formal agreement with the issuer. There can be several unsponsored programs on the same company, and the foreign company has no direct control over them. Unsponsored ADRs trade over-the-counter and are common for names that do not want the burden of a full U.S. listing.
A sponsored ADR is set up under a deposit agreement between the foreign company and one designated depositary bank. That agreement covers dividend flow, voting, fees, and reporting. When you buy a well-known Level II or Level III ADR — TSMC, Toyota, Novartis, Novo Nordisk, HDFC Bank — you are buying a sponsored ADR.
The three sponsored levels
Sponsored ADRs come in three flavors, each with its own trading venue and SEC disclosure burden.
| Level | Trades on | SEC filings | Can raise capital? | Examples |
|---|---|---|---|---|
| Level I | OTC only (pink sheets) | Minimal — Rule 12g3-2(b) exemption; home-country reporting | No | Nestlé (NSRGY), Tencent (TCEHY), Roche (RHHBY) |
| Level II | NYSE, Nasdaq, or NYSE American | Form 20-F annually; Form 6-K for interim disclosures; U.S. GAAP or IFRS reconciliation | No (already listed, but no new issuance) | Any listed foreign issuer not raising capital via the ADR |
| Level III | NYSE, Nasdaq, or NYSE American | Form F-1 registration for the offering, plus 20-F and 6-K on an ongoing basis | Yes — the ADR itself is used to raise fresh U.S. capital | TSMC (TSM), Alibaba (BABA), Toyota (TM), Novartis (NVS) |
Deposit ratio — the most important number to check
Every ADR has a "deposit ratio" that tells you how many foreign shares back one ADR. It is set by the depositary bank when the program launches and can be changed later (usually after a home-market stock split). Three well-known examples show how much the ratio can vary:
| Company | Ticker | Home market | Deposit ratio (1 ADS represents…) | Depositary bank |
|---|---|---|---|---|
| Taiwan Semiconductor | TSM (NYSE) | Taiwan Stock Exchange | 5 common shares | Citibank |
| Alibaba | BABA (NYSE) | Hong Kong Stock Exchange | 8 ordinary shares | Citibank |
| Toyota Motor | TM (NYSE) | Tokyo Stock Exchange | 10 common shares | BNY Mellon |
Worked example. Suppose TSMC common shares close in Taipei at NT$1,000, and the New Taiwan dollar is 32 to the U.S. dollar. Five Taipei shares are worth NT$5,000, or roughly $156.25 at that exchange rate. Ignoring fees and small tracking noise, a TSM ADR in New York should open near $156. If it opens at $165, arbitrageurs can buy Taipei shares, deposit them with Citibank as custodian, receive new ADRs, sell them in New York, and pocket the spread. If it opens at $145, the trade runs in reverse. That is the mechanical reason ADRs of large, liquid names track their underlying so tightly.
The takeaway for a normal investor: you do not need to memorize any deposit ratio, but you should know it exists. When a foreign company splits its home shares, the ADR ratio is often adjusted the same day so the ADR price does not jump artificially. Toyota is the textbook case — when it split its Tokyo-listed shares 5-for-1 on October 1, 2021, its ADR ratio moved from 1:2 to 1:10 so the U.S. price stayed on the same footing.
Dividends, fees, and foreign withholding tax
ADRs pay dividends in U.S. dollars, but the cash gets there via a chain. The foreign company pays its dividend in local currency to the depositary bank, which converts to dollars, deducts service fees (typically a fraction of a cent per ADR, disclosed in the deposit agreement), and pays the balance to ADR holders. On many programs, the depositary also charges a small periodic "pass-through" custody fee.
The bigger surprise for many first-time ADR investors is foreign dividend withholding tax. The company's home country generally deducts a withholding tax at source before the dividend ever reaches the depositary. Rates vary by country and by tax treaty — Switzerland, Germany, and France historically have some of the higher headline rates on dividends paid to non-residents. U.S. investors can often reclaim part of the withholding via the foreign tax credit on their U.S. tax return, but the recovery is rarely automatic. The SEC's international investing overview flags the tax and currency dimensions explicitly.
Risks that are unique to ADRs
- Currency risk. The SEC puts it plainly: "When the exchange rate between the U.S. dollar and the currency of an international investment changes, it can increase or reduce your investment return." If TSMC's Taipei share is flat but the New Taiwan dollar weakens 10% against the U.S. dollar, the TSM ADR falls roughly 10%. The same effect works in reverse when the dollar weakens.
- Delisting and program termination risk. A foreign issuer can terminate its ADR program, or U.S. law can force one to unwind. Investors typically get a window to convert to the underlying foreign shares or receive cash from a sale. The China-U.S. delisting debate around the Holding Foreign Companies Accountable Act is the most-cited recent example of this risk crystallizing.
- Home-market disclosure gaps. Level I ADRs are exempt from full SEC reporting under Rule 12g3-2(b). Investors get whatever the company files at home, in the format it files there. That can be less than what a U.S.-domiciled listed company would publish.
- Overnight price gaps. When the home market is closed, the ADR price can drift, then jump the next morning when the home market reopens and arbitrageurs restore parity. Wide overnight moves in Chinese and Japanese ADRs are usually not free money — they are catching up to the underlying.
- Voting rights are indirect. The depositary bank votes the underlying shares on behalf of ADR holders, following instructions where local law permits. In some jurisdictions ADR holders have weaker voting influence than direct shareholders.
Common mistakes
- Comparing an ADR's dollar price to the foreign share's local-currency price without applying the deposit ratio and the exchange rate. They should almost never match at face value.
- Reading a "dividend cut" that is actually a currency move — a weaker home currency shrinks the dollar dividend even when the local-currency dividend is unchanged.
- Assuming Level I OTC ADRs (Nestlé, Tencent, Roche) come with the same disclosure quality as NYSE-listed Level II names. They do not.
- Ignoring the depositary's pass-through custody fee, which shows up as a small deduction on quarterly statements and compounds over long holds.
Related concepts — and what to learn next
- Global Depositary Receipts (GDRs) — the international cousin, typically listed in London or Luxembourg for European and emerging-market issuers.
- Ordinary shares vs. ADSs vs. ADRs — technically the receipt (ADR) evidences ownership of the depositary share (ADS); in day-to-day usage the terms are used interchangeably.
- Rule 144A and Regulation S ADR programs — restricted structures aimed at institutional or offshore buyers.
- Foreign tax credit — the IRS mechanism for reclaiming some of the withheld foreign dividend tax.
Sources
- SEC investor.gov — American Depositary Receipts (ADRs) glossary entry
- SEC investor.gov — International Investing overview (currency and country risk)
- SEC EDGAR — TSMC F-3 (1 ADS represents 5 common shares; Citibank depositary)
- SEC EDGAR — Alibaba Group Form 20-F FY2022 (1 ADS represents 8 ordinary shares; Citibank depositary)
- SEC EDGAR — Toyota Motor Corporation Form 20-F FY2019 (ADS terms before the 2021 ratio change to 1:10)
- Wikipedia — American Depositary Receipt (background, 1927 Selfridges history, Level I/II/III summary)
Disclosure: This article is for informational purposes only and is not investment advice.