Robinhood CEO Vlad Tenev says it's not "entirely relevant" that the trading platform's so-called tokenized shares of OpenAI and SpaceX aren't technically equity in the companies.It comes after OpenAI raised concerns about the product, which is designed to give users in the European Union exposure to various U.S. stocks — including private companies, which are less liquid than publicly listed firms.OpenAI last week warned that Robinhood's stock tokens do not represent equity in the company and said in a post ...