"Bull markets are born on pessimism, grow on skepticism, mature on optimism, and die on euphoria. The time of maximum pessimism is the best time to buy, and the time of maximum optimism is the best time to sell." -- Sir John Templeton

Just as it makes sense to research the stocks attracting top investors, it's equally important to figure out why smart money is leaving other investments. Using Motley Fool CAPS, the Fool's 120,000-member-strong investing community, we can see which stocks are losing support from CAPS All-Star players.

A sudden decrease in interest from top-rated investors could signal that the stock is losing steam, which might make it an awful stock to avoid for now. At the very least, such drops should signal that further research is in order.

Here are seven stocks receiving less support from CAPS All-Stars over the past month:

Company

Industry

% Change in All-Star Bulls From 11/10 to 12/10

CAPS Rating (out of 5)

CAPS Research

Royal Bank of Canada (USA) (NYSE:RY)

Commercial Banks

(39%)

4 Stars RY

Bank of Montreal (USA) (NYSE:BMO)

Commercial Banks

(35%)

3 Stars BMO

San Juan Basin Royalty Trust (NYSE:SJT)

Oil, Gas and Consumable Fuels

(32%)

5 Stars SJT

Synaptics, Inc. (NASDAQ:SYNA)

Computers and Peripherals

(28%)

4 Stars SYNA

FLIR Systems, Inc. (NASDAQ:FLIR)

Electronic Equipment, Instruments and Components

(27%)

4 Stars FLIR

Permian Basin Royalty Trust (NYSE:PBT)

Oil, Gas and Consumable Fuels

(26%)

5 Stars PBT

Tidewater, Inc. (NYSE:TDW)

Energy Equipment and Services

(26%)

4 Stars TDW

Source: Motley Fool CAPS, as of Dec. 10, 2008.

Come join us on CAPS, absolutely free, to learn more about these and countless other interesting stock ideas. Sign up for free.

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.