Welcome back to another Foolish review of the hottest stocks, as ranked by Motley Fool CAPS. We're looking at the three best-performing industries over the past 30 days, and your favorite long and short candidates in each.

Last week, solar stocks were as hot as molten lava. But not this week. This time, uranium stocks moved up from third place to take the top spot. Stocks in this sector are, as a group, up 12.4% over the last 30 days.

Who are the other hotties? Have a look:

  • Second-best are "low float" stocks -- otherwise known as firms that have few shares available for trading. Constrained supply has stocks in this sector, as a group, up 10.9% over the last 30 days.
  • Third-best are the energy concerns. Plugging into profits has stocks in this sector, as a group, up 9.9% over the last 30 days.

According to you, our Foolish readers, the best stocks in these industries to own now -- i.e., those with four or five of the maximum five stars in CAPS -- are:

Company

CAPS stars

No. of CAPS ratings

Bullish CAPS ratings

Bull ratio

Prospect Energy (NASDAQ:PSEC)

*****

129

127

98.4%

OYO Geospace (NASDAQ:OYOG)

*****

646

632

97.8%

Bolt Technology (AMEX:BTJ)

*****

174

169

97.1%

BHP Billiton (NYSE:BHP)

*****

572

553

96.7%

Titanium Metals (NYSE:TIE)

*****

389

363

93.3%

Source: Motley Fool CAPS

And your favorite short candidates -- i.e., those rated with one or two stars in CAPS -- are:

Company

CAPS stars

No. of CAPS ratings

Bearish CAPS ratings

Bear ratio

Calpine Corp.

*

53

46

86.8%

Uranerz Energy

*

174

102

58.6%

FortuNet (NASDAQ:FNET)

*

31

16

51.6%

Travelzoo (NASDAQ:TZOO)

*

162

67

41.4%

Source: Motley Fool CAPS

Do you agree? Disagree? Let us know what you think by signing up for CAPS today. It's 100% free to participate.

Cap off your day with related CAPS Foolishness:

OYO Geospace is a Hidden Gems pick. You can find out why with a 30-day free trial.

Fool contributor Tim Beyers, who is ranked 1,398 out of more than 24,800 in CAPS, didn't own shares in any of the companies mentioned in this story at the time of publication. All of his portfolio holdings can be found at Tim's Fool profile. His thoughts on hot stocks, Foolishness, and investing in general may be found in his blog. The Motley Fool's disclosure policy is hotter than city asphalt in the summer heat.