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 Schiff Nutrition International (NYSE:SHF) soared 30% today, after British consumer goods company Reckitt Benckiser Group PLC offered to buy the U.S. vitamin and supplement maker for $1.4 billion.

So what: Reckitt's offer values Schiff at $42 per share, and represents a 23.5% premium over the price that German drug giant Bayer agreed to pay a few weeks ago. Reckitt is jumping into the bidding fray to get into the rapidly growing $30 billion global supplement market and, if successful, expects the deal to add immediately to its adjusted earnings.

Now what: "We firmly believe that our entrepreneurial and consumer-focused mind-set, our infrastructure, speed and scale, combined with Schiff's leading brand portfolio, will generate sustained value for our shareholders," Reckitt CEO Rakesh Kapoor said. Of course, the ball is now in Bayer's court, as it can either sweeten its offer, or simply let Reckitt win and collect a $22 million breakup fee under the terms of its agreement with Schiff. Wall Street is betting on a higher bid but, given how far the shares have run over the past month, Fools should probably stay away from Schiff at this point.

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Fool contributor Brian Pacampara has no positions in the stocks mentioned above. The Motley Fool has no positions in the stocks mentioned above. Try any of our Foolish newsletter services free for 30 days. We Fools may not 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.