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 MicroStrategy (NASDAQ:MSTR) jumped today by as much as 11% after the company received an analyst upgrade.

So what: FBR Capital upgraded its rating on MicroStrategy from "market perform" to "outperform," while boosting its price target from $105 to $140. The firm cited sales management changes and new cloud-based offerings, combined with possible margin expansion as two reasons for the boost. The company's operating leverage should contribute to greater profitability.

Now what: Shares are attractively valued, according to the analyst, at just 1.4 times EV/revenue based in 2014 estimates. Comparable companies in the industry fetch a 3.2 multiple, making MicroStrategy look relatively cheaper. Fourth-quarter results may have muted investor expectations, but FBR believes that is providing an opportunity at current prices.

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