Short Interest (SI)

A metric that measures the (reported) number of shares sold short
Summary
  • An indicator of bearish sentiment: A high short interest suggests that many investors believe the stock's price will decline.
  • In general, short interest above 20% is considered high
Short Interest Exceeded 140% of the GME Float

Prior to and during the sneeze, the short interest exceeded the float, something that sounds mathematically impossible. How did this happen?

The short answer is that shares of a stock in the stock market are fungible and can be lent to / borrowed by other market participants, and the same shares can be lent and re-lent multiple times.