Meet The Team

Cort Raithel is a partner at October Three and the Practice Leader of O3’s Pension Administration Services team. Cort joined October Three in 2025 with over 25 years of retirement plan experience.

Cort began his career in the defined benefit industry working in the actuarial consulting office for Towers Perrin in Boston, MA. Cort consulted with clients as they transitioned from traditional pension plans to cash balance plans, using technology and proprietary tools to illustrate impacts to participants and plan sponsors.

He then joined Fidelity Investments, where he founded the data consulting practice. Cort’s new practice assisted clients with moving their data from insourced pension administration to fully outsourced administration with Fidelity. Cort became an industry leader in pension data quality. After relocating to Jacksonville, FL, in 2006, Cort joined CitiStreet, now known as Voya Financial. Cort managed several teams as the data management practice leader, supporting clients with the administration of their defined benefit, defined contribution, and health plans.

Just prior to joining October Three, Cort was the head of defined benefit administration at Transamerica for over 10 years. Under his leadership, Transamerica grew to a top ten defined benefit administration provider.

As the DB Admin Practice Leader for October Three, Cort is responsible for overseeing participant and plan operations, new client onboarding, and system configuration. In addition, Cort champions initiatives to improve customer satisfaction and drive efficiencies across teams.

Cort works collaboratively with actuaries and consultants to support administrative solutions for October Three clients. He is passionate about educating participants on the importance of lifetime retirement income and helping clients demonstrate the value of their retirement programs.

Cort obtained his BA in applied mathematics from Harvard University.