The main difference between the two American actuarial societies is their educational/credentialing paths. The CAS has one fellowship track for property and casualty, while the SOA has fellowship tracks for enterprise risk management, finance and investments, life insurance and annuities, retirement benefits, health insurance, and general insurance (aka property & casualty). An actuary’s job and employer determine which society they’ll get their credentials with. While both societies educate property & casualty actuaries, currently most property & casualty actuaries practicing in the United States get their fellowship with the CAS.
Resources:
Society of Actuaries
Casualty Actuarial Society
CAS Student Central
Abacus Actuaries
International Association of Black Actuaries
Network of Actuarial Women and Allies
Organization of Latino Actuaries
Sexuality and Gender Alliance of Actuaries
South Asian Network of Actuaries
Department of Mathematics
College of Natural Sciences
Be An Actuary
Intro to Actuarial Science – edX