Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: China MediaExpress (Nasdaq: CCME) shares fell 10% today as the battle between long and short investors continued.

So what: The bulls won on Monday, but as the week closes out the bears seem to have taken hold of this seemingly never-ending battle. Investors could argue all day long whether China MediaExpress is a fraud, as Citron Research suggested a few weeks ago, but what is no longer debatable is that the risk is on investors' minds.

Now what: For months, we've been reporting about the company popping and plunging on almost a daily basis. After all of the reports I have read and research I have done, I still don't know what to think about the company or the stock. Therefore, I am going to continue to stay away. I may miss out on the bounce, but I won't go broke in the process.

Interested in more info on China MediaExpress? Add it to your watchlist.

Fool contributor Travis Hoium does not have a position in any company mentioned. You can follow Travis on Twitter at @FlushDrawFool, check out his personal stock holdings or follow his CAPS picks at TMFFlushDraw.

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