CompStak
CompStak is a commercial real estate (CRE) data platform, founded in 2012, that crowdsources and verifies lease comps, sale comps, loan data, and property data from a network of tens of thousands of brokers and appraisers across US markets. Its products include CompStak One (an all-in-one CRE data p
CompStak is an API provider whose private shares are listed on 2 secondary markets: EquityZen, Nasdaq Private Market.
Where It Trades
Listing data is compiled from the public marketplace pages of Forge Global, Hiive, EquityZen, Nasdaq Private Market, and Augment. A listing indicates that a venue has published a page for this company — it is not an offer, a quote, or investment advice, and APIs.io has no affiliation with any venue.
Work with this as data
Every listing here is available over the APIs.io API and to AI agents over MCP. Secondary Market is not yet its own endpoint on the v1 API. Reach it through catalog search and the tag graph, or the MCP server.