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 Vocus (UNKNOWN:VOCS.DL) skyrocketed 47% Monday after the cloud-based marketing software company announced that it had agreed to be acquired by GTCR for $18 per share.

So what: The all-cash transaction values Vocus at roughly $446.5 million, represents a premium of 79% over its 12-month volume weighted average share price, and is expected to close before the end of the second quarter of 2014. 

Vocus CEO Rick Rudman weighed in: "For our shareholders, this agreement provides an opportunity to realize cash value for their shares at a significant premium to historical share prices. For our employees and customers, we believe that joining forces with GTCR creates a significant opportunity to utilize each other's strengths and move even faster toward our vision of creating innovative software and making our customers successful."

Now what: Shares closed today at $17.92 per share, leaving little upside for investors who choose to wait to receive their payout until the acquisition is complete. As a result, unless you bought shares just under a year ago and want to hang on to ensure a lower capital gains tax rate on the profits, I think investors would be wise to take their money and put it to work elsewhere.

Steve Symington has no position in any stocks mentioned. The Motley Fool recommends and owns shares of 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.