Mad Money Spotlight: Cramer on RadioShack

Indeed, RadioShack has already begun to see some padding from the TV switch. In the first quarter, which ended March 31, RadioShack saw an 11% jump in profit , to $43.1 million, or 34 cents a share, from $38.8 million, or 30 cents, in the year prior.

But this trade only works under $15 a share, not a penny more, and Cramer advises investors to use limit orders when purchasing. If analyst bumps in estimates don't happen by Tuesday, run.

And once the windfall from the conversion is over, Cramer says, there is no real reason to hold on to RadioShack long-term.