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: Solar wafer specialist LDK Solar (NYSE: LDK) saw its shares rocket 14% in intraday trading, after it raised its third-quarter revenue and shipment estimates.

So what: Specifically, LDK expects to report revenue in the range of $610 million to $640 million, versus previous estimates of $570 million to $600 million. With the likes of Ascent Solar (Nasdaq: ASTI), Solarfun (Nasdaq: SOLF), and Canadian Solar (Nasdaq: CSIQ) all announcing stock-spiking news today, the solar sector is certainly shaking. 

Now what: While today's news is encouraging for LDK's short-term, I'd look elsewhere for better long-term value. LDK is now up about 90% over the past three months alone, outperforming the likes of Trina Solar (NYSE: TSL) and Yingli (NYSE: YGE), which both sport higher returns on capital. Of course, no matter which way you decide to play, please proceed with caution. Solar stocks are extremely hot.

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