Mixed Hodge modules on stacks

Using the $\mathrm{\infty }$-categorical enhancement of mixed Hodge modules constructed by the author in a previous paper, we explain how mixed Hodge modules canonically extend to algebraic stacks, together with all the $6$ operations and weights. We also prove that Drew’s approach to motivic Hodge modules gives an $\mathrm{\infty }$-category that embeds fully faithfully in mixed Hodge modules, and we identify the image as mixed Hodge modules of geometric origin.