Short interest at 5/31 =25.95 million vs 26.50 million at 5/15.
A few shorts made some nice money if they shorted in the high 9s and low 10s and covered in mid to upper 8s.
Nevertheless, there are still somewhere around 20 million WAY underwater shorts. When downward momentum ends (don't know when) and upward momentum is clearly established, covering shorts will be longs best friend.
The hedge funds who are shorting now rarely make any money from their trades. Hedgies almost always drastically underperform the market. They are twice removed from managing their own money, so they don't care how they trade. Their profits are the 2% of book they charge their idiot customers, most of whom are university endowments and pension funds who are playing with other people's money.
So it's almost always best to reload your positions while they're shorting or running scared and dumping their long positions for a loss.