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

Last time, ethanol producers were more out of place than Dick Cheney at a MoveOn.org convention. This week, they're unwelcome by association. Renewable fuel stocks are off by an average of 22.7% since mid-October.

I'd give you second place next, but there's little difference between renewable-fuel stocks and renewable-energy technology. Not surprisingly, stocks from this sector are also down 22.7% over the last 30 days.

It's a steep drop from there. Stocks from Norway, our third-place finisher, are off just 11.9% on average.

According to you, our Foolish readers, the worst stocks in these industries to own now -- i.e., those rated one or two out of a maximum five stars in CAPS -- are:

Company

CAPS Stars

No. of CAPS Ratings

Bearish CAPS Ratings

Bear Ratio

BioFuel Energy (NASDAQ:BIOF)

*

69

42

60.9%

U.S. BioEnergy

*

207

125

60.4%

Aventine (NYSE:AVR)

*

351

162

46.2%

Pacific Ethanol (NASDAQ:PEIX)

*

519

210

40.5%

Source: Motley Fool CAPS.

And your favorite long candidates -- i.e., those rated four or five stars in CAPS -- are:

Company

CAPS Stars

No. of CAPS Ratings

Bullish CAPS Ratings

Bull Ratio

Norsk Hydro (NYSE:NHY)

*****

343

338

98.5%

Statoil (NYSE:STO)

*****

305

300

98.4%

Source: Motley Fool CAPS.

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This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.