This Day In Market History: Jack Dorsey Sends The First Tweet By: Benzinga via Benzinga March 21, 2018 at 10:53 AM EDT Each day, Benzinga takes a look back at a notable market-related moment that occurred on this date. What Happened? On this day 12 ... Read More >> Related Stocks: Alphabet-C Bio-Techne Corp Blackberry Ltd Twitter, Inc.