The ADR ratio is the conversion factor between one American Depositary Receipt trading in the United States and the number of foreign ordinary shares it represents overseas. A 5:1 ratio means one receipt equals five foreign shares. A 1:10 ratio means it takes ten receipts to equal a single foreign share. That single number shapes the receipt’s dollar price, the size of your dividend check, how many votes you cast, and what the depositary bank can charge you along the way.
What the Ratio Represents
When a depositary bank sets up an ADR program, it defines a fixed relationship between the receipt sold to American investors and the ordinary shares held by a custodian in the company’s home country. A 1:1 ratio is the simplest case: one receipt, one foreign share. Most companies don’t land there, because their home-market share price converts to a dollar figure that feels either too high or too low for a U.S. exchange. So the bank bundles or splits.1U.S. Securities and Exchange Commission. Investor Bulletin: American Depositary Receipts
Two real programs show both directions. Diageo, the British drinks company behind Guinness and Johnnie Walker, uses a ratio where one ADR represents four ordinary shares — bundling upward to raise the receipt price. Siemens, the German industrial conglomerate, does the opposite: two ADRs equal a single ordinary share, splitting one foreign share across multiple receipts. Both choices push the receipt into a dollar range that looks normal next to American-listed stocks.
Large depositary banks such as JPMorgan, BNY Mellon, and Deutsche Bank run these programs. Before a receipt trades, the bank takes the foreign share price in its home market, converts it to dollars, and picks a ratio that lands the receipt somewhere comparable to U.S.-listed peers. A foreign share worth roughly $2 might be bundled at 10:1 so the receipt opens near $20. A foreign share worth $500 might be split at 1:5 so the receipt opens near $100. Receipts priced too low can miss exchange listing standards; receipts priced too high discourage retail buyers.1U.S. Securities and Exchange Commission. Investor Bulletin: American Depositary Receipts
How the Ratio Sets the Receipt Price
The ratio creates a fixed mathematical link between the foreign share price and the receipt price. If a German company trades at €20 and the ratio is 2:1, meaning two foreign shares per receipt, the receipt trades at roughly €40 converted into dollars. Flip that to a 1:2 ratio on the same stock and the receipt prices at about €10 in dollar terms. The arithmetic is straightforward.
Two forces stop the actual price from matching the formula perfectly. Currency movements are the first, and they can change your return even when the underlying stock does nothing. Hold a receipt tied to a Japanese company and watch the yen weaken 10% against the dollar, and your receipt loses roughly 10% in dollar terms regardless of what happened in Tokyo. A strengthening foreign currency works the other way and adds to your gain. The second force is supply and demand on the U.S. side during hours when the home market is closed. Investors with concentrated ADR positions sometimes hedge the currency layer with forwards or options.
How the Ratio Sets Your Dividend
Dividend math follows the ratio directly. If the company pays $1.00 per ordinary share and your receipt represents five ordinary shares, the gross dividend is $5.00 per receipt before any deductions. The depositary bank converts the payment from the local currency into U.S. dollars, generally at the exchange rate on the conversion date, before it lands in your brokerage account.
Two deductions come off that gross amount. The foreign government withholds tax at the source, at rates that range from zero in some jurisdictions to 35% in others depending on the country and any tax treaty in force. The depositary bank then takes a service fee for handling the conversion and distribution, typically running between $0.01 and $0.05 per receipt.2U.S. Securities and Exchange Commission. Description of American Depositary Shares Between currency spreads, withholding, and depositary fees, the net dividend can look meaningfully smaller than the headline figure.
U.S. investors can generally claim a foreign tax credit for the withheld amount, offsetting their American tax bill dollar for dollar within limits. The statutory basis is Section 901 of the Internal Revenue Code, which lets U.S. citizens and residents credit foreign income taxes against federal tax liability.3Office of the Law Revision Counsel. 26 USC 901 – Taxes of Foreign Countries and of Possessions of United States The credit is not automatic on every dividend, so short-term traders in particular should check the holding-period rules.4Internal Revenue Service. Publication 514 – Foreign Tax Credit for Individuals
Fees Even When There Is No Dividend
Depositary banks charge more than dividend-handling fees. Annual or quarterly custody fees, sometimes called pass-through fees, cover the ongoing administrative cost of maintaining the program. These typically run one to three cents per receipt and follow a schedule set out in the depositary agreement.
When a company pays a dividend, the bank simply nets its custody fee against the payment. When a company pays no dividend, the fee gets charged directly to your brokerage account. That catches some investors off guard, because small deductions can appear against a position that has never paid out anything. Before buying a non-dividend-paying ADR, read the depositary agreement’s fee schedule so the charges don’t come as a surprise.
How the Ratio Sets Your Voting Power
Holding a receipt gives you the right to vote at the foreign company’s shareholder meetings, but the process is indirect. The depositary bank receives notice of the meeting, sets a record date for ADR holders, and sends out voting materials with the agenda and instructions. You tell the bank how to vote, and the bank votes the underlying shares for you.
Your effective voting weight is set by the ratio. A receipt representing five ordinary shares carries five votes. A receipt representing a fraction of a share carries a fraction. In practice, the process is clunkier than voting as a direct domestic shareholder. Materials can arrive late, time zone differences compress the response window, and standard deposit agreements state that the bank will not vote on its own initiative if you miss the deadline.2U.S. Securities and Exchange Commission. Description of American Depositary Shares
When the Ratio Changes
Ratios are not fixed for life. If a receipt’s price drifts too far above or below the range the market expects, the depositary bank can adjust the ratio through what amounts to a split or reverse split of the receipts. A bank whose receipt has climbed to $300 and wants it closer to $75 could change a 1:1 ratio to 4:1, giving each holder four receipts for every one previously held.
These adjustments must be reported to FINRA through its electronic Corporate Actions Management System.5Financial Industry Regulatory Authority. Issuer Company-Related Action Notification Form and ADR Company-Related Action Notification Form Unlike a traditional stock split, a ratio change typically doesn’t alter the number of ordinary shares in the custodial account. Only the conversion factor moves. Your brokerage account updates automatically to reflect the new receipt count, and the market price adjusts on the effective date. No action is required on your end.
How to Find the Ratio for a Specific ADR
The definitive source is the Form F-6 registration statement filed with the SEC. You can pull it up by searching the EDGAR database under the company name. Form F-6 identifies how many foreign shares each depositary share represents.6U.S. Securities and Exchange Commission. Form F-6 Registration Statement under the Securities Act of 1933 It is the registration vehicle federal securities regulations require to establish a formal ADR program.7eCFR. 17 CFR 239.36
The depositary agreement, filed as an exhibit to SEC registration statements, spells out the ratio, fee schedule, and dividend procedures in detail. A typical agreement will state the ratio in plain terms: “Each ADS represents one share. The ADS to share ratio is subject to amendment as provided in the form of ADR.”2U.S. Securities and Exchange Commission. Description of American Depositary Shares
Faster options work for a quick check. The foreign company’s investor relations page usually has a section for American shareholders that lists the ratio. Depositary banks maintain searchable directories showing the ratio alongside the CUSIP number. Most brokerage platforms display the ratio in the security’s summary tab. Because ratios can change through corporate actions, the SEC filing is the source to trust when precision matters.