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 Molycorp (NYSE: MCP) rose 10% in intraday trading Monday.

So What: Today's move continues a three-month run for the company developing rare-earth elements in the U.S. Molycorp has been driven up as demand for rare-earth elements increases, and the world looks for supplies outside of China.

Now What: The company released no news today, so this move is likely speculative. As trade between the U.S. and China becomes more contentious, the market for rare-earth elements, currently dominated by China, is sure to get more attention. This Fool isn't a speculator, but I won't stand in the way of this rocket stock.

Interested in more info on Molycorp? Add it to your watchlist here by clicking here.