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 cyber-security company KEYW Holding Corp. (NASDAQ:KEYW) jumped as much as 10% today after being upgraded by an analysts.

So what: Analysts at Chardan upgraded the stock from a "neutral" rating to "buy" and put a price target of $14 on the stock. That indicates a 31% upside from the stock price late in the day.  

Now what: Stock pops that are driven by analysts upgrades don't often last long, and we saw that today, with shares trading up just 6% late in the day. I'll also point out that revenue dropped 18% in the first quarter and the company lost $0.06 per share. Conditions may be improving, but I'd wait to see an actual turnaround before jumping in and certainly wouldn't buy on an analyst pop today.  

Travis Hoium and The Motley Fool have no position in any of the stocks mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools don't 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.