MuleSoft founder Ross Mason has joined an unusual venture fund called SignalFire. SignalFire wants to change the VC industry with quant-like data. Salesforce bought MuleSoft for $6.5 billion a year ago. Mason has been an investor in SignalFire for four years, he tells Business Insider, and it helped him with his 40 angel investments. SignalFire's founder tells us that when he first tried to raise funds for his new vision of a VC fund, he was laughed at and called crazy, but now he has $1 billion under management. Visit Business Insider's homepage for more stories.