Susan Witcraft, financial analysis director for OneBeacon Insurance Cos., will speak on Wednesday, Oct. 27, in 3M Auditorium, Room 150, Owens Science Hall. Her topic is “Using Mathematical Modeling to Answer Insurance Business Questions.”

Witcraft’s talk is the next event in the CAM (Center for Applied Mathematics) Colloquium series. Free and open to the public, the discussion will begin at 4:35 p.m.

This colloquium will begin with an introduction to several key business questions that insurance companies face. Economic capital modeling, the primary mathematical tool used to address these questions, will then be explained. The remainder of the presentation will focus on how math and statistics are used to parameterize the model and interpret the results to provide meaningful information for senior management.

OneBeacon Insurance Cos. writes specialty property and casualty insurance. At OneBeacon, Witcraft is responsible for a variety of modeling tools used for managing the company’s capital. She has been a leader in the actuarial profession in modeling of property-casualty insurance companies, first called dynamic financial analysis and more recently referred to as economic capital modeling, for more than 20 years. Prior to OneBeacon, she spent many years at Guy Carpenter & Company LLC and Milliman, advancing the economic capital modeling tools and practices at both firms, among other responsibilities.

Witcraft is a fellow of the Casualty Actuarial Society and a member of the American Academy of Actuaries. She graduated with distinction from Stanford University with a bachelor’s degree in statistics.