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 struggling retailer Sears (NASDAQ:SHLD) fell 18% today, after a terrible earnings report.

So what: Revenue fell 6%, to $8.86 billion, and the company reported an adjusted loss of $1.99 per share. Management tried to put a positive spin on some of the numbers, pointing to a 20% jump in online sales and improving apparel and appliance sales, but the bottom line is that Sears is really struggling.

Now what: The experiment that is a Sears and Kmart combo is falling apart before our eyes. A retailer's worst nightmare is falling sales and, on a company level, I don't see a lot of bright spots. This stock has a "Do Not Touch" sign on it and, unless there's an unforeseen turnaround, I don't see that changing any time soon.

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Fool contributor Travis Hoium has no positions in the stocks mentioned above. 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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