Electronic Journal of Differential Equations, Vol. 2013 (2013), No. 88, pp. 1-13. Title: Characterization of positive solution to stochastic competitor-competitor-cooperative model Author: Partha Sarathi Mandal (Indian Institute of Technology, Kanpur, India) Abstract: In this article we study a randomized three-dimensional Lotka-Volterra model with competitor-competitor-mutualist interaction. We show the existence, uniqueness, moment boundedness, stochastic boundedness and global asymptotic stability of positive global solutions for this stochastic model. Analytical results are validated by numerical examples. Submitted November 19, 2012. Published April 05, 2013. Math Subject Classifications: 93E15, 37B25, 60G17. Key Words: Global solution; Ito's formula; moment; Lyapunov function; Brownian motion; global asymptotic stability.