Cramer's 'Mad Money' Follow-Up: Sept. 21

Every night on "Mad Money," Jim Cramer offers market commentary and general investment advice, and he makes calls on specific stocks, both of his own choosing and in response to viewer requests. He relies on his many years of experience and strong track record, and he takes full responsibility for his calls.

"I never shirk from admitting my mistakes; instead, I dwell on them to learn from them. I change my mind, I take losses, I own up to them," Cramer has said.

Here we track some of his calls from the previous episode of "Mad Money" and find out, at least in the very short term, how the stocks are performing. Keep in mind that Cramer might not have been recommending that viewers take immediate action on a stock. And, of course, it's up to the individual investor to do his or her own homework.

That said, here's how some of the stocks that Cramer talked about on Friday's "Mad Money" show fared today.

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Research In Motion(RIMM Quote): Cramer said on Friday that he would be watching RIM this week. The BlackBerry maker is scheduled to report earnings on Thursday, and Cramer is looking to that report for the latest read on the "mobile Internet tsunami." He's not buying RIM, however, because of how much it's risen over the past few weeks.

On Monday, Research In Motion closed up 54 cents, or 0.7%, at $84.16.

RiteAid(RAD Quote): Some are playing flu season with RiteAid, said Cramer, but he prefers competitors Walgreen(WAG Quote) and CVS Caremark(CVS Quote), which Cramer says RiteAid lags far behind.

On Monday, RiteAid slid 9 cents, or 4.2%, to $2.08; Walgreen gained 4 cents, or 0.1% to close at $34.54; and CVS added 20 cents, or 0.6%, to $36.18.