Co-founders of Sigma, Stuart Jones and Gabrielle Haddad, founded their company whilst at MIT. The Sloan School of Management caught-up with them and other breakout companies here.
Sigma Ratings Evaluating a credit rating is important for a company, but what about its non-credit risks? Sigma Ratings analyzes risks such as financial crime compliance and governance. The company has made a name for itself, so much so that Sigma chief operating officer Gabrielle Haddad, MBA ’17, testified before Congress on de-risking. Co-founder Stuart Jones, Jr., is also a 2017 MBA.
https://mitsloan.mit.edu/ideas-made-to-matter/where-are-they-now-catch-12-mits-smartest-startups