Here is a chart from a recent Bloomberg article summarizing who owns single-family houses in the US.
As of Q1-2024, about 69% were owner-occupied, about 26.6% were owned by small landlords (1-9 homes), and the rest were owned by what many are now calling "corporate landlords."
The point of this graph was to show that, despite getting a lot of political attention, corporate landlords still own very little. Let's call it sub 4%, excluding iBuying companies like OpenDoor. So how much of a problem is this, really?