Options on an asset are manageable with respect to portfolio formation. The options well diversified across strikes are integrable into the one well centered at a strike, termed center. The benefit from the diversification increases in the risk. An option on assets is naturally disintegrable into ones for the limiting the nonmarket risk and others well diversified on the market portfolio of assets for the reducing the market one. The others are incorporable into the one well centered at a strike as named market center, called market stock. Given the market stock, there exists unique cross section among (expected) stock values as option prices such that the sensitivity of an option price to the market stock price includes the beta of the asset return as nonlinear factor.