OpenFin, the operating system (OS) of enterprise productivity, today announced that it has secured $35 million in Series D investment. The latest funding round was led by Bank of America with significant participation from Pivot Investment Partners and ING Ventures. Additional investors in the round include CME Ventures, CTC Venture Capital, SC Ventures and Tribeca Early Stage Partners. The investment will be used to help accelerate the adoption of OpenFin OS across the financial industry and beyond. OpenFin's web-based OS is becoming a de facto standard in financial services for powering next-generation applications and digital experiences for employees and clients.