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 fertilizer and renewable energy company Rentech (NASDAQ:RTK) jumped 17% today after the company announced an acquisition.

So what: Rentech will buy wood chip processor Fulghum Fibres for $112 million, including debt. Two plants that are being acquired have contracts for 445,000 metric tons of product annually, providing a stable customer for Rentech.  

Now what: Management expects the new assets to generate $10 million in operating income and $20 million of EBITDA this year, which is solid for what the company paid. This provides another potential growth avenue for Rentech if it is able to expand its customer base. The stock currently trades at 10 times forward earnings estimates, a decent value given this addition and I think the stock will move higher as revenue from this deal hits the income statement.

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