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 titanium company RTI International Metals (NYSE: RTI) fell as much as 15% today after the company was downgraded by Goldman Sachs.

So what: The Goldman analyst's price target was reduced from $40 to $31 as RTI fell from a neutral rating to sell. Goldman is concerned that RTI won't be able to pass on increasing titanium sponge costs to customers and will feel a margin squeeze as a result.

Now what: Titanium sponge recently hit prices not seen since early 2008, and RTI's pricing power will be tested as a result. Investors might want to take a look at Titanium Metals (NYSE: TIE) to take advantage of this trend for its presence in the raw material market instead of RTI. Goldman's downgrade isn't a reason to sell, but it does point out some of the challenges facing RTI going forward.

Interested in more info on RTI International Metals? 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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