Circle is the operator of USD Coin (USDC), a regulated digital currency that has facilitated over $1.4 trillion in transactions. They offer transaction and treasury services that are driving the development of new financial services and commerce applications. Circle also provides an online platform for quick and easy money transfers using blockchain technology. They have expanded their services to include crypto-currency investment products and OTC trading services. Circle was founded in 2013 and has received $140 million in funding from investors such as Goldman Sachs and Accel Partners. They are headquartered in Boston with branches in New York, San Francisco, Dublin, London, and Hong Kong.