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: Shares of China Digital TV (NYSE: STV) fell or jumped today, depending on whether you are looking at Yahoo! Finance or Google Finance, because of a special dividend.

So what: There is confusion over the company's $2.00, two-installment dividend payment and the ex-distribution date of today. There are special rules for a stock distributing a dividend of more than 25% of its stock price, but it doesn't look like those rules apply in this case, so the stock should be trading ex-dividend.

Now what: Long-term holders don't need to worry about today's move because there wasn't any news, but short-term traders should do their homework. optionsXpress experienced similar confusion last week, and the company provided clarification. If you're looking to get into China Digital TV, it's too late for the dividend, and based on yesterday's closing price of $8.98, the stock could fall further once confusion is cleared up.

Interested in more info on China Digital TV? 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.

China Digital TV Holding is a Motley Fool Rule Breakers pick. 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.