Distribution of ice mass fractions in the cores of super-Earths with and without cold Jupiter companion. The vast majority of super-Earths with giant companions is completely dry. On the other hand, super-Earths in systems without a giant planet often retain large ice mass fractions, reaching close to the maximum value of f_ice ≈ 0.59. With p ≈ 10⁻¹⁵, the null hypothesis that both datasets are drawn from the same parent population must be rejected.