Financial performance analysis of e-collaboration supply chain under stock disruptions is carried out by system dynamics modeling and simulation. Financial performances of three different supply chains with Internet e-collaboration tools are compared with the assumption that a stock disruption occurs at the retailer warehouse. Numerical results are shown to reveal the Non-collaborative, Collaborative Forecasting and Collaborative Planning supply chains have quite different financial response characteristics under certain stock disaster, and Collaborative Forecasting supply chain has the best behavior in case of these events in contrast to the others.