"The bulls are making a very big stand," Jim Cramer said on CNBC's "Stop Trading!" segment on Friday. He said the bulls are making a "concentrated effort" to prop up stocks such as Citigroup ( C), NYSE ( NYX), Bank of America ( BAC) and Apple ( AAPL).They're keying in on Apple, he said, hoping to boost it up by $8 or $9. "The bulls want to take Apple up so bad, it's funny. I mean, look at it. Should anyone really be thinking about it? No!" Cramer recommended that if investors are thinking about buying Apple, they wait till around 3:30 p.m. "That's when the fire power tends to be exhausted by the bulls who are trying to prop the market up," he said. GE ( GE), CNBC's parent company, reported third-quarter earnings on Friday morning. "I think it's important to recognize that the GE quarter was exactly in line," said Cramer, who owns GE both personally and in his Action Alerts PLUS charitable trust. But he's more concerned about the credit markets. "The equity market is just a thumbnail compared with the credit markets," he said. "It's kind of like the Western world of finance is on the line here," Cramer said. "If I had the power, I would move the market up right now."