A:

The .PK is an example of a suffix representing where the security is traded - an over-the-counter (OTC) network or an international exchange. The major U.S. exchanges such as the NYSE, Nasdaq and AMEX do not have suffixes. The .PK behind a stock simply means the stock in question is traded on the pink sheets (or the Pink Sheets Electronic Quotation service).

OTC Markets
The pink sheets service is a loosely regulated over-the-counter, decentralized market. There are few requirements to being listed on this network, as companies do not have to file with the SEC nor keep updated financial information. The only major requirement to being listed is to have at least one market maker, who must be registered with the SEC and a member of the NASD. The market maker is responsible for quoting the latest trading price of the stock on the pink sheets network. This is a highly speculative and risky place to invest. Investores would be wise to only invest what they are willing to lose.

The other suffix for an over-the-counter market is .OB. It means securities are traded on the OTCBB. This network is also one of high risk but is less risky than the pink sheets, as it is a regulated and has stricter listing requirements.

International Exchanges
Suffixes appended to the end of a stock symbol most often represent exchanges outside of the United States. For example, Canada's Toronto Stock Exchange is represented by a .TO, so if you see a stock symbol with a .TO suffix you'll know it trades on the TSX. All major foreign exchanges have a suffix designated to them.

Here is a list of a few international exchanges:

exchange.gif

A more complete list can be found here.

For further reading, see Getting To Know Stock Exchanges and our Stock Basics tutorial.

RELATED FAQS
  1. What is a "pink sheet" in the context of an OTC (over-the-counter) transaction?

    Read about pink sheets, the electronically driven over-the-counter market in which broker-dealers connect to trade the stock ... Read Answer >>
  2. Why do some stock symbols have three letters while others have four? What is the ...

    Stocks found on the New York and American Stock Exchange will normally have symbols with three letters or fewer. On the other ... Read Answer >>
  3. How does a company move from an OTC market to a major exchange?

    The over-the-counter market is not an actual exchange like the NYSE or Nasdaq. Instead, it is a network of companies that ... Read Answer >>
  4. I own shares of a company that just received a delisting notice from Nasdaq. Does ...

    Let's start by walking through the reasons for listing requirements and what happens when a company's stock is delisted from ... Read Answer >>
Related Articles
  1. Investing

    How To Play The OTC Pink Stocks

    The OTC Pink offers a variety of investment candidates including many good companies waiting to be discovered. Recently, the OTC Pink has worked hard to improve the service by tiering companies ...
  2. Investing

    A Look At Primary And Secondary Markets

    Knowing how the primary and secondary markets work is key to understanding how stocks trade.
  3. Insights

    Getting to Know the Stock Exchanges

    Here are the answers to all the questions you have about stock exchanges but are too afraid to ask.
  4. Investing

    What's an Over-The-Counter Market?

    The over-the-counter market is a decentralized market in which unlisted securities trade.
  5. Investing

    Why Do Penny Stocks Fail?

    Penny stocks are speculative and highly risky investments. Lack of government and stock exchange oversight and general information leaves penny stock investors open to sudden losses.
  6. Investing

    Buying Nintendo Put Options: Is It Possible? (NTDOY, VLKAY)

    Nintendo saw its shares jump after Pokemon Go. Now many investors feel it's time to sell. Discover the best alternative for shorting Nintendo.
  7. Investing

    Understanding Penny Stocks' Risks and Rewards

    Penny stocks can soar in a short period, but dabbling in them is a dangerous game. Here is a breakdown on the risks and rewards of penny stocks.
  8. Investing

    FDA Drafts Guidelines for Naming Biosimilar Drugs

    A unique but random 4-letter suffix added to the original drug and its copycat will now be used.
RELATED TERMS
  1. E

    A temporary fifth character suffix to a symbol for a stock traded ...
  2. Pink Sheets

    A daily publication compiled by the National Quotation Bureau ...
  3. Over-The-Counter - OTC

    Over-The-Counter (or OTC) is a security traded in some context ...
  4. Pink Slip

    A pink slip refers to a notice of dismissal given to an employee.
  5. Stock Market

    Exchanges or over-the-counter markets in which shares of publicly ...
  6. OTC Markets Group Inc.

    The owner and operator of the leading U.S. inter-dealer electronic ...
Hot Definitions
  1. Retirement Planning

    Retirement planning is the process of determining retirement income goals and the actions and decisions necessary to achieve ...
  2. Drawdown

    The peak-to-trough decline during a specific record period of an investment, fund or commodity. A drawdown is usually quoted ...
  3. Inverse Transaction

    A transaction that can cancel out a forward contract that has the same value date.
  4. Redemption

    The return of an investor's principal in a fixed income security, such as a preferred stock or bond; or the sale of units ...
  5. Solvency

    The ability of a company to meet its long-term financial obligations. Solvency is essential to staying in business, but a ...
  6. Dilution

    A reduction in the ownership percentage of a share of stock caused by the issuance of new stock. Dilution can also occur ...
Trading Center