Based on the aggregated intelligence of 170,000-plus investors participating in Motley Fool CAPS, the Fool's free investing community, The National Bank of Greece (NYSE: NBG) has earned a respected four-star ranking.

With that in mind, let's take a closer look at NBG's business and see what CAPS investors are saying about the stock right now.

NBG facts

Headquarters (Founded) Athens, Greece (1841)
Market Cap $5.5 billion
Industry Diversified banks
Trailing-12-Month Revenue $4.3 billion

CEO Apostalos Tamvakakis (since December 2009)

CFO Babis Mazarakis (since November 2010)

Return on Equity (Average, Past 3 Years) 13.9%

Barclays (NYSE: BCS)

Citigroup (NYSE: C)

HSBC Holdings (NYSE: HBC)

Sources: Capital IQ (a division of Standard & Poor's) and Motley Fool CAPS.

On CAPS, 96% of the 1,465 members who have rated NBG believe the stock will outperform the S&P 500 going forward. These bulls include Redog75 and rainofstocks.

Just last month, Redog75 highlighted NBG as a rather bankable bet: "Though values have shattered over the past year, this stock will recover. Debt woes with Greece, uncertainties with the Euro, asset liquidations, and so on, have led to this stock doing far less than it could. This is a great time to pick up NBG."

NBG's exposure to Greece's debt crisis has naturally weighed heavily on its shares, but the valuation is becoming too cheap for many Fools to ignore. NBG still derives about 40% of its business from the attractive markets of Turkey and southeastern Europe, so the stock's paltry price-to-book of 0.5 -- a discount to players in Greece such as Barclays (0.7), HSBC (1.4), and Citigroup (0.9), as well the likes of Bank of America (NYSE: BAC) (0.6) and Wells Fargo (NYSE: WFC) (1.4) -- might be worth pouncing on.

CAPS member rainofstocks sums up the attractive risk/reward scenario:

NBG is essentially a play on the Greek government. If Greece falls, then NBG will go bankrupt, but if they survive then the upside potential on this stock is mind-boggling. Overall, I think it's safe to say that Greece is past the failure point. China has come in and announced that it will buy Greek debt and frankly, the EU (especially Germany) will not and cannot let Greece fail. It also helps that the company's ... trading under its book value.

What do you think about NBG, or any other stock for that matter? If you want to retire rich, you need to put together the best portfolio you can. Owning exceptional stocks is a surefire way to secure your financial future, and on Motley Fool CAPS, thousands of investors are working every day to find them. CAPS is 100% free, so get started!

Fool contributor Brian Pacampara owns no position in any of the companies mentioned. The Fool owns shares of Bank of America. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.