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At this time of the year, when lying on the beach on vacation makes for lazy daydreams, it's not uncommon to consider the possibility of hitting it big in stocks.

If you've been investing for a while, you realize this is not the same as trying to hit a lottery jackpot. The lottery is about luck. A big stock market win, instead, would combine a little study with foresight, courage and a dash of bravado. Sure, your $10,000 wager on a few low-priced names could blow up and leave you with nothing. But what if your idea actually worked out and you had an extra 10 grand in your brokerage account in 12 months?

Normally it's my job to warn you away from reckless speculation. But just this once I'll be the enabler of your bad conscience. Let's throw caution to the wind and think about what kinds of stocks have the potential to go up 100%, 300% or even more over the next year.

Three Categories of Doubles

There are at least three types of stocks that could double in the next year:

Low-priced unknowns that already are rising at a strong clip, well below the media's radar.

Low-priced, well-known companies that have been slammed in the dirt in well-publicized, news-related smackdowns.

Companies of any price or fame that represent good business doing the right things, albeit at a more accelerated pace than their peers.

That last group is the most tantalizing, for we can all imagine that kind of success for our stodgier stocks. So we'll look for those, while at the same time seeking oddball micro-caps with potential for big success, or larger outfits that have suddenly fallen on hard times for reasons that could be reversed before too long.

None of these types of doubles is hugely uncommon. Of 5,000 stocks with market capitalization of at least $50 million and price above $2, some 200 -- about 4% -- doubled in the past year. Another 30 tripled. While most are obscure, many are well-known and widely held, such as

Apple Computer

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and homebuilder

Toll Brothers

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Common Characteristics

What did most of them have in common a year ago?

A price of $1.50 to $15, a low price-to-sales multiple, above-average revenue growth and rising analyst earnings estimates are good for starters. So is a rise in trading volume, as stocks only rise in value as new suitors emerge to bid hard for shares from current holders.

They may come from the most humble of industries, such as industrial-valve makers or pig farmers, but they're more likely to come either from out-of-favor sectors ripe for an upgrade of sentiment or a sector that has been in favor for at least 12 months.

They don't need earnings, because one of the keys to the success of early buyers is their out-of-consensus belief that earnings growth will arrive in the future. They also don't need any Wall Street analyst coverage, because often these stocks are either too early in their lives to attract interest, or analysts have given up on them. And they don't need low debt levels, since another perception by early buyers might be that a debt restructuring or major paydown may come soon.

One element that doublers do often share is a set of institutional owners that have a history of finding golden needles in the haystack, such as Royce & Associates, Wasatch Advisors, Heartland Advisors, SAC Capital Management, Wellington Management and Columbia Wanger. They don't need many -- just one or two is enough to validate the idea and get the ball rolling.

Lessons From a Success Story

Before going on, let's take a look at the market's top stock of the past year,


( NT). Up 730% in the past 12 months, it sells packaged diet systems. Not exactly rocket science. Two years ago its business was in trouble; it was delisted from the


and traded on the pink sheets. But new management came in and restructured operations to sell through the Internet, television and independent distributors rather than through company-owned or franchised retail stores.

Risk-taking investors a year ago were buying the stock around $1.25. Since then, the company moved to the American Stock Exchange and then back to the Nasdaq. Management has repeatedly raised earnings and revenue guidance, and trading volume has surged from 259,000 shares a day last year to 535,000 shares a day in the second quarter to 848,000 shares a day last month. Most shares are still held by independent money managers, with no major mutual funds listed as holders as of April 2005.

If the story holds up, the price will move higher as the Fidelities of the world come in. Another double in the next year seems unlikely, however, as its price/sales multiple is already more than 6.5 at a current market cap of $658 million.

Beaten Up, Bouncing Back

So, which companies might double in the next 12 months? I screened for stocks that are at least 50% lower than their five-year high but are up 25% from their lows, have seen increasing trading volume, trade at a low multiple of sales, have the right type of institutional owners and are in a sector on the upswing. One that looks promising is

Danka Business Systems

( DANKY), which leases and distributes business machines. It has a $150 million market cap and a price-to-sales multiple of 0.12, and it trades at $2.37.

It's down from a one-year high of $4.15, and its most recent earnings report, posted last week, showed that a recent restructuring had led to an improvement in margins and revenue growth and a reduction in expenses. The stock traded at $4.75 as recently as April 2004, and if the resurrection effort continues on its current path, along with a global economic recovery, Danka can get back there again.

I've been early and wrong on fiber-optics components makers for more than a year, so I have nothing to lose by making


( BKHM) my top pick. Its earnings report last week suggested that business has stabilized and turned around. Revenue shows sequential and year-over-year increases of 22% and 57%, respectively. Gross margins improved by 19 points. Its liquidity position was enhanced by an asset sale, and pricing and demand among end users such as

Nortel Networks


are improving.

With a really cheap valuation -- its price/sales multiple is around 0.6, vs. the 1.1 average of its peers -- there are few reasons other than global recession why the stock can't get back to the $6.50-$7 area by the end of 2006.

The likelihood of more than one of these ideas advancing more than 100% in the next 12 months is pretty small. If you'd like to propose a few of your own,

send me an email

and put "2X" in the subject field. Candidates must currently trade over $1, have a market capitalization of more than $50 million and trade more than 25,000 shares a day on average. Include the reason for your speculation, and I'll publish the most interesting ideas in a future column.

Jon Markman, writer of Value Investor, is the senior investment strategist and portfolio manager at Greenbook Investment Management, a division of Greenbook Financial Services. Separately, he is publisher of StockTactics Advisor, an independent weekly investment research service. While Markman cannot provide personalized investment advice or recommendations, he appreciates your feedback;

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