KEY POINTS
  • CNBC's Jim Cramer said professionals on Wall Street are taking advantage of amateur investors by bidding up downtrodden stocks in premarket trading. 
  • "It's a game. If it weren't securities, let's say it was Monopoly, let's say it's Draft Kings ... it would be so much fun," Cramer said on "Squawk Box." 
  • "If people wanted these stocks, there would be plenty of supply if they would just wait until 9:30 a.m.," Cramer added later on "Squawk on the Street."

CNBC's Jim Cramer said Friday that professionals on Wall Street are taking advantage of amateur investors by bidding up beat-up but popular stocks like airlines in premarket trading. 

"It's a game. If it weren't securities, let's say it was Monopoly, let's say it's Draft Kings ... it would be so much fun," Cramer said on "Squawk Box." "Pick a couple of stocks, you gun them in the morning, and then you hope people are stupid enough and they buy them."