Reddit users shake up the stock market, 'short squeezes' Wall Street to their advantage Posted at 5:37 PM, Jan 28, 2021 and last updated 2021-01-28 20:38:24-05 (KERO) â Itâs created a ton of talk online, and itâs something that money experts say theyâve never seen before -- a large group of inexperienced investors who discussed their plans on social media platform Reddit has shaken up the stock market in a big way. 23ABCâs Austin Westfall has the details on how they did it, and what local experts say about investing smartly during the pandemic in case you want to join in on the action.