Special Session 134: Mean field stochastic control problems and related topics

Cramer-Lundberg Models with Mean-Field Claims and Premia
Dan Goreac
Laval University
Canada
Co-Author(s):    Hezhen Bao, Dan Goreac, Juan Li, and Radu Mitric
Abstract:
This talk introduces McKean--Vlasov stochastic differential equations to model insurance reserves in a large, interacting pool of insurers. Our framework departs from the classical Cram\`er--Lundberg model by letting premiums and claim distributions adapt to the evolving cross-sectional distribution of capital, thereby capturing feedback and contagion effects. Using characteristic-function based integral and recursive formulas together with iterative moment calculations, we track distributional dynamics over time and design adaptive premium and systemic risk measures. These methods yield distribution-sensitive adjustment coefficients and supermartingale bounds for ruin probabilities, updating classical ruin theory for modern interconnected insurance markets.