While most contributions on coopetition have examined these strategies at the dyadic level, a limited number of recent articles has analyzed the phenomenon from a portfolio perspective. In this chapter, we provide a review and research agenda of coopetitive portfolios that can be defined as alliance portfolios including alliances with competitors. We first underline the relevance of addressing coopetition strategies at the portfolio level. We then reveal the main contributions in the investigation of coopetitive portfolios. Finally, we present a detailed research agenda to study further coopetitive portfolios.