CommonStock

The platform functions as a broker-agnostic social layer built on top of existing brokerage and cryptocurrency exchanges. Users can link their brokerage accounts, which enables them to share their investment portfolios, performance, and real-time trades. To ensure privacy and focus on strategy, financial data is displayed by percentage, with specific dollar amounts never shared. This structure is intended to foster an environment where an investor's track record verifies their credibility, separating valuable insights from speculative noise. The platform serves retail investors, from novices seeking to learn to experienced traders wanting to share their strategies.

Key features include real-time alerts that notify users when investors they follow execute a trade, facilitating the exchange of strategies and the ability to copy trades. The platform also supports discussions around investment theses and market analysis. It allows users to form groups to invest as a team or in friendly competitions. In August 2023, Yahoo acquired Commonstock, with the aim of integrating its social and community features into the Yahoo Finance platform to provide users with a more comprehensive investment resource. Prior to its acquisition, Commonstock had raised a total of $36.5 million over four funding rounds, including a $25 million Series A led by Coatue in October 2021.