Nevada State High School Authorized Investment Providers For specific investment provider information, please click on the investment provider name of your choice to visit the company's website. 403(b) Invesco OppenheimerFunds(800) 959-4246 National Life Group(800) 579-2878 Thrivent Financial(800) 847-4836 457(b) National Life Group(800) 579-2878 Thrivent Financial(800) 847-4836