Market capitalization is the total value the stock market puts on a company: its share price multiplied by the number of shares outstanding. Each point here is the share count reported in a filing multiplied by the closing price on that filing date, adjusted for later stock splits, so the history moves when a new filing arrives rather than with each day's trading. A larger market cap means investors collectively value the company more highly; by itself it says nothing about profit or debt. Annual points keep the latest observation in each calendar year.
Interactive Brokers Group, Inc. market cap for the quarter ending 2015-12-31 was $697.44M, a 63.61% increase year-over-year.
Interactive Brokers Group, Inc. market cap for the quarter ending 2015-03-31 was $497.36M.
Interactive Brokers Group, Inc. market cap for the quarter ending 2014-12-31 was $426.27M.
Interactive Brokers Group, Inc. market cap for the quarter ending 2011-05-06 was $181.81M.
Interactive Brokers Group, Inc. market cap for fiscal 2015 was $697.44M, a 63.61% increase from fiscal 2014.
Interactive Brokers Group, Inc. market cap for fiscal 2014 was $426.27M.
Interactive Brokers Group, Inc. market cap for fiscal 2011 was $181.81M.
Interactive Brokers Group, Inc. market cap for fiscal 2010 was $198.76M.