Opendoor Technologies Inc Common Stock. Replay the stock market charts of OPEN day by day, back to 2003. Open long and short positions without spending any money. Opendoor Technologies Inc. operates a digital platform for residential real estate in the United States. The company's platform enables consumers to buy and sell a home online. It also provides title insurance and escrow services. Opendoor Technologies Inc. was incorporated in 2013 and is based in Tempe, Arizona.