Polygon.io, a leading market data platform that allows developers to interface with the world’s most accurate real-time and historical financial data, announced today that they have raised a $6M Series A financing led by e.ventures with participation from existing investor, Green Visor Capital. Thomas Gieselmann, co-founder of e.ventures and early investor in companies such as NGINX, Segment.com, AppAnnie and GotoMyPC, will be joining Polygon.io’s board of directors.