Square is a financial services company that provides credit card processing solutions for mobile devices. Founded in 2009 by Jack Dorsey, Square has raised over $341 million in funding from investors including Kholsa Ventures, Sequoia Capital, and Citi Ventures. Square's main products include a credit card reader that plugs into mobile devices, and apps for iOS and Android that allow businesses to accept payments. The company has experienced rapid growth, processing over $1.25 billion per month in payments from 3 million users in 2013. While facing some regulatory issues, the document predicts continued success for Square given its strong funding, partnerships, and focus on an underserved small business market.