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 Chinese chip manufacturer RDA Microelectronics (Nasdaq: RDA) popped as high as 11% in intraday trading Friday on substantially lower than average volume.

So what: After touching a high of about $16.05 in the afternoon, the shares quickly retreated and are now up about 4.5% at the time of this writing. There doesn't seem to be any obvious company or industry-specific news driving today's wild swings, so I'm chalking it up to the usual extreme volatility that comes with red-hot Chinese small caps.

Now what: For most investors, RDA is too speculative right now to take a shot on. The company has already returned more than 50% since its IPO last month, and currently trades at a big P/E premium to listed rivals like Broadcom (Nasdaq: BRCM), RF Micro Devices (Nasdaq: RFMD), and Skyworks Solutions (Nasdaq: SWKS). While Mr. Market seems very excited about RDA's growth potential, I'll stay on the sidelines until there is more proof of it.

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