Some stocks are one-hit wonders, rising from obscurity with a big, dramatic move, then quickly fizzling into obscurity or oblivion. But for other stocks, that initial explosion is only a preview of even bigger and better gains to come.

Today, we've compiled 10 stocks that made some of the biggest upward moves over the past month. We'll then pair that list with the ratings issued by our Motley Fool CAPS community. The higher each stock's rating, the greater CAPS members' faith in the company's ability to keep on beating the market.

Stock

30-Day Change

CAPS Rating (5 max)

Phoenix Companies

531.03%

**

The Bank of Ireland 

472.73%

***

Zale

390.72%

*

American Capital (NASDAQ:ACAS)

281.20%

**

Allied Irish Banks (NYSE:AIB)

265.17%

*****

YRC Worldwide (NASDAQ:YRCW)

249.36%

**

Century Aluminum

210.91%

***

Barclays (NYSE:BCS)

191.17%

***

Las Vegas Sands (NYSE:LVS)

180.23%

**

Hovnanian Enterprises

179.31%

*

Let's see why the CAPS community thinks any of these might outperform the market.

A mighty temblor
After seeming practically on its deathbed for much of the past year, casino operator Las Vegas Sands has shown some surprising signs of life lately. Its CEO bought 4.7 million shares valued at around $14 million, bringing his total purchases in the past week to 12.5 million shares. Las Vegas Sands has also said it may start up its Macau casino construction projects again.

After China clamped down on the visas it issued to citizens wanting to travel to Macau's casinos, Sands, Wynn Resorts (NASDAQ:WYNN), and MGM Mirage (NYSE:MGM) all suffered a decline in gambling revenues. But Sands' CEO hopes a change is in the air. Following a disastrous January and February, during which Macau's gross casino revenue dropped 17% and 15.5%, respectively, revenue dropped only 6% year over year in March.

That's no certain sign that the casino's fortunes are changing, nor any signal that investors should bet big. Las Vegas Sands still carries a lot of debt, its domestic casino operations are hurting from the declining fortunes of its namesake city, and some of its rivals haven't shown indications they're out of the woods. MGM, for example, had to pony up $200 million recently to prevent a default on a loan on a CityCenter construction project. It's now looking to sell some of its casinos just to survive. These conditions hardly suggest a turnaround in progress.

Nonetheless, top-rated CAPS All-Star Caligiuri likes the odds of a Las Vegas Sands comeback:

This company is worth 4.29 billion dollars. The book value has increased for the past 3 years. Cash flow from operating activities has been positive the last two years. Insiders appear to be confident holding over 50% of the company.

Market Cap of 2.92 billion dollars. There is over a 47 % difference between the book value and the market cap, and the company is MAKING money. That doesn't make a whole lot of sense to me so I see this as VERY undervalued.

Shake, rattle, and roll
It pays to start your own research on these potential market-shakers at Motley Fool CAPS. Read a company's financial reports, scrutinize key data and charts, and examine the comments your fellow investors have made, all from a stock's CAPS page.

Allied Irish Banks is a Motley Fool Global Gains selection. The Fool owns shares of Allied Irish Banks. Try any of our Foolish newsletter services 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.