In 1983, Peterffy attempted to computerize the options market, and first targeted the Chicago Board Options Exchange (CBOE).  At the time, brokers were still using fair value questionnaires that were updated once or twice a day. In 1983, Timber Hill created the first commercial handhelds. As Peterffy explained in a 2016 interview, battery-powered devices had touch screens for the user to enter an share price, and it would produce the prices of the recommended options and it also tracked positions and options constantly reassessed on the stock.  However, he immediately faced opposition from the stock exchange`s chiefs. When he first brought a 12-inch (30 cm) x 9-inch wide (23 cm) device to the changing floor, a committee told him in exchange that it was too big. When it reduced the size of the device, the committee found that no analytical equipment could be used on the alternative floor. Effectively prevented from using the CBOE, he tried to use his devices in other replacements.  Interactive Brokers is the largest electronic brokerage firm in the United States in average daily transactions and is the leading foreign exchange broker.
 Interactive Brokers also targets commodity consultants, making them the fifth largest premium broker to use them.  IB is regulated by the Securities and Exchange Commission, the Financial Industry Regulatory Authority, the New York Stock Exchange, the Financial Conduct Authority and other regulators and self-regulatory authorities.  It offers clearing services to 200 online brokers worldwide.  The company serves 720 thousand client brokerage accounts with $170.1 billion in client participation.  (p. 62) Interactive Brokers has tangible assets of $75 million, including $24 million in computer equipment.  (see 119) Currently, approximately 17.3 per cent of the company is held in public, with the remainder held by employees; Thomas Peterffy is the largest shareholder.  (P101) In 2009, IB launched iTWS, a mobile trading app based on the ibes Trader workstation; it also published the portfolio analysis tool. In 2011, the company introduced several new services, including the Interactive Brokers Information System, the Hedge Fund Introduction Program and the Stock Improvement Program.