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: Modine Manufacturing (NYSE: MOD) shares jumped 10% today after a large volume spike early in the day.

So what: More than 150,000 shares traded hands in the first six minutes of trading this morning compared to an average volume of 315,000 shares per day. Later in the day volume settled down, but the stock has continued to trade higher throughout the day.

Now what: It appears a slew of market buy orders awaited Modine this morning at the open, pushing shares higher. Without good news from the company I'm inclined to sit out this move as the stock may give gains back in coming days.

Interested in more info on Modine Manufacturing? Add it to your watchlist.