Comment by observationist

The market meaning all real estate, residential and commercial, and tiny, as in under 3%, with regards to what is owned by the institutional investors. That's probably higher with regards to properties that are or have been on the market in the last ten years or so. From what I can tell, the other ~97% is owned by individuals and smaller funds and mom&pop companies, with fewer than 20 properties involved.

In some dense urban areas, up to 10% of the local residential properties are owned by funds or investors. There's also overlap with investment networks where you're not getting to BlackRock levels, but you'll have a web of companies with mutual interests and a network of private debt and collateral, and these make up around 20% of the whole. For the most part, though, the majority of single family homes are not institutional. Even multi-family units, apartment complexes, and other rental properties are only in the ~10% range of institutional ownership, with the remainder owned by individuals, mom&pops, and small investment networks.

The conjunction of capabilities and incentives in combination with a huge buffer of wealth allows institutional investors to manipulate things in ways that aren't healthy for private home ownership, and the downstream social and economic impacts of being forced to rent, or hold debt that's not properly reflective of the value of the property.

We should impose reasonable policies that serve the interests of the people, and not simply maximize wealth building at the expense of citizens and families that would benefit from home ownership.