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 Sunrise Senior Living (NYSE: SRZ) fell more than 10% one day after a 9.8% drop. Investors can't seem to forgive the caregiver for its lousy second-quarter earnings report.

So what: Sunrise reported earnings on Wednesday night. Revenue came in light at $322 million while the company's $0.02-per-share profit benefited from a one-time $11.3 million gain on an equity investment. Sunrise would have suffered a net loss without it.

Now what: As it was, analysts were expecting the company to lose $0.04, but on $324.6 million in revenue. Unsurprisingly, Sunrise -- a two-star stock in our Motley Fool CAPS database that's seen revenue decline in five of the past six quarters -- couldn't meet the threshold. I can't blame the sellers for getting out while there are still buyers out there. Do you agree? Disagree? Weigh in using the comments box below.

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