How rich can a discovery make you? Ask those who were holding shares of PetroChina (NYSE:PTR) on May 2.

The next day, China's Xinhua news agency reported that PetroChina had found 7.33 billion barrels' worth of oil reserves in the Nanpu block of the Jidong field in Bohai Bay, the largest such discovery in more than 30 years. Shares of PetroChina are up more than 11% since.

Running with the rebels
Game-changing events can happen like that, just as game-changing growth stocks can produce gushing returns for a portfolio. Just ask David Gardner, who captains the good pirate ship Rule Breakers. By discovering and then investing in little-known and frequently misunderstood fast movers, he produced nine years of 20% average annual returns. History told him that these were the best value stocks available.

That's why David and his team still seek to get in early on stocks that are reshaping, or creating, important industries. You can, too, with the help of our completely free-of-charge Motley Fool CAPS investor-intelligence database, which currently contains information on more than 4,400 stocks.

CAPS applies user input to rate stocks from one to five stars. So, using CAPS, we're once again going to search for stocks that haven't yet met the threshold for a star rating, that have a minimum $250 million market cap, and that are expected to grow their earnings by at least 15% annually over each of the next five years.

Let's have the list
Now, with that preamble behind us, here are five growth stocks that have yet to be discovered.

Company

No. of CAPS Ratings

Bullish CAPS Ratings

5-Year Growth Est.

ValueVision Media (NASDAQ:VVTV)

6

3

30.0%

Privatebancorp (NASDAQ:PVTB)

8

7

16.5%

Distribucion y Servicio (NYSE:DYS)

11

10

15.9%

AFC Enterprises (NASDAQ:AFCE)

11

9

15.0%

Merit Medical Systems (NASDAQ:MMSI)

5

4

15.0%

Sources: Motley Fool CAPS, Yahoo! Finance.

Bear in mind that this isn't a list of recommendations. Instead, I offer these stocks as candidates for further research. My favorite, however, is Chilean grocer Distribucion y Servicio. I'll let CAPS All-Star chuckpin, whose portfolio has outperformed all but the top 2% in the database, explain the thesis:

"... Cash flow is improving, they are paying dividends and debt off after issuing a bunch of stock in 2004. Cash situation looks good although supermarkets invariably have razor thin margins. Although I am never keen on going long with stock not based in the U.S. that issue stock in our markets -- there are always transparency issues! -- I am with this one as the stock has been flat over 2 years in price."

Intrigued? Due your own due diligence and then check in with thousands of other investors at CAPS. And, if you'd like, add your own commentary. You'll be helping your fellow Fools and testing your ideas at the same time. Click here to get started now; it's 100% free to participate.

See you back here next week for five more undiscovered growth stocks.

How great is growth? Four of the dozens of stocks in the market-beating Motley Fool Rule Breakers portfolio have more than doubled in two years. Care to find out what they are? Click here to get 30 days of free access to the service.

Fool contributor Tim Beyers, who is ranked 5,504 out of more than 28,500 in CAPS, is a sucker for growth stocks and a regular contributor to Rule Breakers. Tim 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 growth stocks, Foolishness, and investing in general may be found in his blog. The Motley Fool's disclosure policy is an investor's greatest discovery.