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 payment service provider Moneygram (NASDAQ:MGI) fell as much a 10% today, and finished the day down 6%, after a downgrade from Credit Suisse.

So what: The Swiss bank lowered its rating from outperform to neutral, saying it sees competition heating up in the industry. Both Moneygram and rival Western Union (NYSE:WU) have decreased prices for online money transfers lately. Credit Suisse also noted regulatory pressure from the Dodd-Frank Act could negatively affect Moneygram by encouraging competition, lowering prices, and giving their customers, often immigrants, more options.

Now what: Starting in February, the Dodd-Frank legislation will impose certain requirements on companies like Moneygram, such as disclosing more information about transfer fees and foreign exchange rates. However, there are no actual caps on fees, and the target companies insist they already provide the necessary information so the effects of the law on the bottom line remain to be seen. Analysts still see solid growth ahead, projecting EPS to increase by 25% next year.

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Jeremy Bowman has no positions in the stocks mentioned above. The Motley Fool owns shares of Western Union. Motley Fool newsletter services recommend Western Union. 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.