Stocks climbing to 10 times their original price are rare breeds -- but they're not impossible to find. Especially when you have Fools for friends.

The market's best stocks include companies that have risen dozens of times in value by taking advantage of the market's weaknesses. These aren't penny stocks; they're viable companies with sound business prospects that are achieving phenomenal returns. Finding just one or two of these monstrously successful firms can help you establish a winning portfolio.

Stalking the monster
To find tomorrow's winners, we've enlisted the help of more than 165,000 monster trackers at Motley Fool CAPS. We've compiled a list of the most successful CAPS members, dubbed All-Stars, whose picks have doubled, tripled, or even quadrupled in price. Then we've plucked out some of their recent picks for stocks they find equally promising.

Player

CAPS Member Rating

Monster Stock

CAPS Score

Recent Stock Pick

CAPS Rating (out of 5)

melcherd

99.02

Ternium

283.09

American Capital (Nasdaq: ACAS)

****

ratsharp

99.37

Rovi

131.56

TiVo (Nasdaq: TIVO)

**

TMFRoyal

99.49

Baidu.com

256.32

Wendy's/Arby's Group (NYSE: WEN)

**

Score is how many percentage points that pick is beating the S&P 500.

Of course, this is not a list of stocks to buy -- or, for those monster stocks that our CAPS All-Stars have already found, sell. Just consider them starting points for your own further research of extreme buying opportunities.

In search of bigfoot
American Capital is on the same page as President Barack Obama's "recovery summer" line, saying, "the recession has ended." While Treasury Secretary Timothy Geithner did join in on the feel-good tour the other day, writing in a New York Times op-ed, "Welcome to the recovery," it's still a pretty bold statement considering all the indications the economy is about to go into the dumps again and initial jobless claims continue to march higher.

However, although American Capital's earnings missed analyst expectations, the debt restructuring it undertook in June did help the business development company swing to a profit this year. With $1 billion less debt weighing it down, AmCap says its asset quality is improving and it's on the prowl to start buying again.

Fortress Investment Group and Ares Capital (Nasdaq: ARCC) also reported profitable quarters this morning, so with many businesses still needing mezzanine financing, this could be the time for the money sitting on the sidelines to move in. Lbtbernstein was prescient enough last month to note American Capital's restructuring positioned it to capitalize on improving conditions: "Refinance has been completed and [American Capital] looks more likely to make exits from existing portfolio. As finances improve look for this to trade over book value."

A good reception
There has been a lot of static for TiVo since its latest setback in its patent war with DISH Network, but its set-top box technology is still licensed by cable companies and Best Buy is still willing to market its DVRs, so all is not lost. And if the rumors of closer ties to Apple (Nasdaq: AAPL) TV prove true, it could set the stock in motion again. Of course, Apple is always the subject of some rumor tying it up with someone somewhere: How long have we been waiting for a Verizon iPhone?

Regardless of the outcome, CAPS All-Star member Matt8265 sees TiVo as a lost cause at this point. NorCalEvents, on the other hand, says the DVR pioneer still has a lot to offer: "While software and consumer subscriptions were the main product in the past, this company is already becoming a leader in select informational acquistion for the media giants it still associates with."

Juicy profits
Perhaps ripping a page from McDonald's (NYSE: MCD) playbook, Wendy's/Arby's Group wants to take its burgers on the road and grow globally, with reports saying it will touch down in Russia next.

It was the international expansion opportunities that attracted DrRonPaul4Prez to the restaurant chain:

Recent news suggests that they are shifting their focus to international expansion, which is huge considering the success of YUM brands (NYSE: YUM) and McDonald's. They also voted in favor of share buy-backs at the stockholder meeting. No current position, but I am highly considering this for my next buy.

And why not? McDonald's recently said second-quarter earnings jumped 12% as increases in global same store sales outpaced domestic comps. This could be a stock for you to sink your teeth into on the Wendy's/Arby's Group CAPS page.

A chance for scary growth
It takes more than a few All-Star picks and a quick pitch to make buy or sell decisions, so start your own research on these stocks on Motley Fool CAPS and find other opportunities with monster potential.

Best Buy is a Motley Fool Inside Value recommendation. Baidu is a Motley Fool Rule Breakers pick. Apple and Best Buy are Motley Fool Stock Advisor recommendations. Motley Fool Options has recommended a bull call spread position on Best Buy and Yum! Brands. The Fool owns shares of Best Buy. Try any of our Foolish newsletter services today, free for 30 days.

Fool contributor Rich Duprey does not have a financial position in any of the stocks mentioned in this article. You can see his holdings here. The Motley Fool has a disclosure policy.