Cramer's 'Mad Money' Follow-Up: Airgas

On Wednesday's episode of "Mad Money," Jim Cramer spoke with Airgas(ARG Quote) CEO Peter McCausland. In October, Cramer named Airgas a sell, but he said he was wrong, since the stock was up 37% since.

Cramer said last night that he's "sticking" with McCausland. On Thursday, Airgas closed down 25 cents to $42.72.

Cramer's Wednesday "Tech Spec" picks was Cadence Design Systems(CDNS Quote), which he said could follow Taiwan Semiconductor's(TSM Quote) 27% rise since he'd last recommended that stock.

Cramer said Cadence doesn't have much competition in its business of making tools that help create smaller, faster microchips. He said its management made big mistakes in 2008, but that's all in the past, and the company has a new chairman and CFO who's been buying shares. ...