Stocktwits

Founded in 2008 by Howard Lindzon, Stocktwits is a social network centered on financial markets. Its mission is to be the global hub for investors and traders to connect, learn, and profit. The platform pioneered the use of the "cashtag" (e.g., $AAPL) to organize conversations around specific stocks, cryptocurrencies, and other assets. Initially built on the Twitter API, it has since grown into a standalone platform with millions of users. In recent years, Stocktwits has expanded its services to include commission-free equities and crypto trading for US residents through its wholly-owned SEC-registered broker-dealer subsidiary, ST Invest, LLC.