According to the Canadian Investment Funds Course, a stock exchange is a centralized and regulated market where securities of listed companies are traded between buyers and sellers. A stock exchange has strict listing requirements that companies must meet in order to be eligible for trading on the exchange. These requirements may include minimum capitalization, number of shareholders, financial reporting, corporate governance, and compliance with securities laws. A stock exchange also provides liquidity, transparency, and efficiency for the trading of securities.

An over-the-counter (OTC) market is a decentralized and unregulated market where securities that are not listed on a stock exchange are traded between dealers and brokers. An OTC market has no physical location, rather the trading is done through phone, email, or computer networks. An OTC market has lower listing requirements than a stock exchange, which makes it easier for smaller or newer companies to access capital. However, an OTC market also has less liquidity, transparency, and efficiency than a stock exchange.

Therefore, if Underground Airways Ltd. wants to take their privately owned corporation public through an initial public offering (IPO), they would have to weigh the pros and cons of listing on a stock exchange or the OTC market. One of the main considerations is that a stock exchange listing would provide them with greater market exposure and public confidence than listing on the OTC market. This is because a stock exchange listing signals that the company has met the high standards of the exchange and is subject to ongoing regulation and oversight. A stock exchange listing also attracts more investors, analysts, and media attention than an OTC listing. A stock exchange listing may also increase the value and liquidity of the company’s shares.