IEX Is Running a Super Bowl Beer Ad on Social Media, But You Can’t Buy the Beer

<p></p><p>Beer commercials during the Super Bowl are standard fare, but they don't often promote a beer that isn't available for sale. Investors Exchange (IEX), a U.S.-based stock exchange, is running a social campaign on Twitter, Facebook, LinkedIn and YouTube to promote both liquidity, as in the inventory available on a stock exchange, and Liquidity, which...</p><p>