A comparative study of the hydrodynamic and electrooptical properties of the poly(N-vinylpyrrolidone)-C₆₀-tetraphenylporphyrin three-component complex containing 1.3 wt % fullerene and 1.6 wt % tetraphenylporphyrin in aqueous solutions and chloroform with those of the individual polymer and its binary complexes with C₆₀ and tetraphenylporphyrin was performed. It was shown that for the complex with a given composition, the size, mobility, and polydispersity of poly(N-vinylpyrrolidone) change insignificantly upon complex formation. However, fullerene and tetraphenylporphyrin were found to significantly affect the electrooptical properties of the original polymer and the interplay between these properties and the composition of the polymer complex.