Imagine being able to invest in a company that has a huge market share in one of the world's quickest-growing economies and resides in a space where extracting money from business has proven lucrative. Sounds like a great investment, right?

Indeed, that's the scenario Baidu (NASDAQ:BIDU) investors have benefited from, as shares of China's largest search engine are up an incredible 1,200% since going public in 2005. But lately, things haven't been nearly as exciting.

Things got started in August 2012 when upstart Qihoo 360 (UNKNOWN:QIHU.DL)-- traditionally an Internet security company -- decided to enter the search market.  What looked at first like a silly attempt at putting a dent in Baidu's search supremacy quickly turned into a very real threat. Qihoo currently has a 20% market share, as compared to Baidu's 60%.

But eventually, investors got over that. So what's holding back Baidu shares now? The Motley Fool's Brian Stoffel delves into two huge concerns that bears have when it comes to owning shares of Baidu. Watch the video below to see what they are and find out Brian's take on them.

Brian Stoffel owns shares of Baidu. The Motley Fool recommends and owns shares of Baidu. 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.