3 ms·

It's shorthand on Twitter to refer to a company: https://twitter.com/search?q=%24AAPL&src=typd https://twitter.com/search?q=%24AAPL&src=typd

• comex 12y ago
  In this case, it's the same number of characters as the longhand.
  • yen223 12y ago
    But $AAPL is clearer, because "Apple" may refer to the record company, or the fruit! (I'm stretching, I know.)