Many Australia-based companies that afford US investors the convenience of investing via US-listed American Depositary Receipts (ADR), either on their initiative or via the effort of an interested financial institution.

Here’s a primer on Australian stocks, US over-the-counter (OTC) symbols and ADRs.

The great majority of the companies under Australian Edge How They Rate coverage have US symbols, many because they actively seek to raise capital here on their own accord. That means they comply, to varying degrees, with US Securities and Exchange Commission filing requirements for foreign companies and with US accounting principles. Others trade here because a sponsoring institution has effectively created a secondary market for the shares, without the underlying company’s active participation.

Shares traded on US OTC markets bearing a final “F” in their five-letter symbols are basically home-listed shares trading in a market created by and for US institutions. Individuals can buy and sell here, too. Prices basically reflect ASX prices and also reflect changes in the relationship between the US dollar and the Australian dollar. One “F” share represents one ASX-listed share. The dividend you receive in respect of an “F” share is the dividend paid in respect of the ASX-listed share, adjusted for currency effects.

An ADR is a certificate that represents stock of a foreign company. ADRs are listed on US stock exchanges or the OTC Bulletin Board or Pink Sheets. Those that trade OTC have five-letter symbols ending with the letter “Y.” All transactions, including dividend payments, are conducted in US dollars.

One ADR certificate may represent one or more shares of the foreign stock; it can also represent a fraction of a share. For example, one Telstra Corp Ltd (ASX: TLS, OTC: TTRAF, ADR: TLSYY) ADR, which trades under the symbol TLSYY, is worth five ordinary shares that trade on the Australian Securities Exchange under the symbol TLS. Australia & New Zealand Banking Group Ltd’s (ASX: ANZ, OTC: ANEWF, ADR: ANZBY) ADR, ANZBY, is worth one Australia-listed ANZ share.

Because many ADRs don’t have a one-to-one ratio between the depositary receipts and the shares of stock, financial ratios are often not included in stock listings. Data in Australian Edge Portfolio tables and How They Rate is derived based on Australian Securities Exchange symbols so is as complete as you’ll find anywhere.

Foreign companies themselves often “sponsor” the creation of their own ADRs. These are called “sponsored ADRs.” There are three levels of sponsorship.

A Level I sponsored ADR is created by a company because it wants to extend the market for its securities to the US. It does not, however, want to register with the Securities and Exchange Commission (SEC) or conform to generally accepted accounting principles (GAAP). Level I ADRs trade on the OTC Bulletin Board or Pink Sheets trading systems, usually but not exclusively by institutional investors. Australia & New Zealand Banking Group’s is a Level I ADR.

Level II and Level III sponsored ADRs must be registered with the SEC, and financial statements must be reconciled to generally accepted accounting principles. A Level II ADR requires partial compliance with GAAP, while a Level III ADR requires complete compliance. A Level III sponsorship is require if the ADR is a primary offering and is used to raise capital for the company. Only Level II and Level III sponsored ADRs can be listed on the New York Stock Exchange (NYSE), the American Stock Exchange or Nasdaq. Telstra Corp sponsors a Level III ADR in the US, meaning it’s actively seeking to raise capital here.

An unsponsored ADR is created by a US investment bank or brokerage that buys ordinary shares on the underlying company’s home market then deposits them in a local custodian bank. This depositary bank then issues shares that represent an interest in the stocks and handles most of the transactions with American investors, serving both as transfer agent and registrar for the ADR.

The shares of the foreign stock held in the custodian bank are called “American Depositary Shares,” although this term is sometimes used as a synonym for “American Depositary Receipts.” Unsponsored ADRs can’t be listed on the major American stock exchanges because they aren’t registered with the SEC and lack other necessary qualifications.

The price of an ADR is determined by supply and demand but will generally track the price of the underlying ordinary share. When dividends are paid, the custodian bank receives it and withholds any foreign taxes, exchanges it for US dollars and then sends it to the depositary bank, which then sends it to the investors.

The US depositary bank handles most of the interaction with US investors, including rights offerings, stock splits and stock dividends. Sponsored ADR investors may receive communications, including financial statements, directly from the company.

As far as brokerage commissions are concerned, ADRs are US-listed securities, and so there will be no surcharge or extra fee to execute trades.