Stockpickr: Cramer's Portfolios of the Week

Cramer's 'Unnatural Demand' Plays: Cramer explained in a May 3 blog post:

Violent upside moves don't just get created by earnings. They get created by supply, or lack thereof. And they get created by shorts who take away the natural supply and actually create unnatural demand. I've been studying five of the most vicious moves up, looking for similarities, and they all have three ingredients: fantastic, much better than expected earnings, a skeptical if not downright negative cohort of analysts and short-sellers and an incredibly small amount of stock to go around.

Cramer offered his 5 'Unnatural Demand' Plays and told us "it's the way the market works, and you need to recognize it before you get hurt betting against companies where the upside is simply too out of control, too vicious to be contained." His list included Buffalo Wild Wings(BWLD Quote) and Whirlpool(WHR Quote).

Cramer's Private Equity Plays: On last Friday's "Mad Money" show, Cramer told viewers that the next stock to get taken out by private-equity money and pay a big premium to its shareholders might very well be Penn National Gaming(PENN Quote).

Cramer believes that there is way too much money on the private-equity sidelines for investors not to figure out what the private-equity folks are thinking of buying next. With that in mind along with some help from a Goldman Sachs report on private-equity targets, Cramer recently added to his Private Equity Plays. His new picks include Cheesecake Factory(CAKE Quote) and Ross Stores(ROST Quote).

Lightning Round: Cramer was full speed ahead in his latest Lightning Round segment on Thursday night's "Mad Money" show. He was bullish on several stocks such as Time Warner(TWX Quote) and Union Pacific(UNP Quote) but also bearish on the likes of Brocade(BRCD Quote) and Axcelis(ACLS Quote).

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