Every quarter, many money managers have to disclose what they've bought and sold, via "13F" filings. Their latest moves can shine a bright light on smart stock picks.

Today let's look at Eagle Asset Management, a massive money management arm of Raymond James Financial. Tracing its history back to 1976, the company provides investment services via individual managed accounts as well as mutual funds.

The company's reportable stock portfolio totaled $12.1 billion in value as of March 31.

Interesting developments
So what does Eagle Asset Management's latest quarterly 13F filing tell us? Here are a few interesting details.

The biggest new holdings are Axiall and Artisan Partners Asset Management. Other new holdings of interest include RF Micro Devices (UNKNOWN:RFMD.DL) and Tronox Limited (NYSE:TROX). RF Micro Devices specializes in radio-frequency components and semiconductors. It has been benefiting handsomely from being a component supplier for iDevices (and lower-end phones as well). Bulls are hopeful that it will do a lot of business in China, and it also bodes well for the company that smartphones are increasingly employing RF technology. Its recently reported fourth quarter featured revenue up 49% over year-ago levels. Still, RF Micro Devices faces serious competition, including from deep-pocketed Qualcomm.

Tronox is not exactly a household name, but it's the world's largest fully integrated titanium dioxide producer, supplying paint companies, paper companies, and more. It emerged from bankruptcy in 2011 as a stronger company, and reinstituted its generous dividend in 2012. Falling prices for titanium dioxide have hurt, but a recovering housing market will help.

Among holdings in which Eagle Asset Management increased its stake was Marvell Technology Group (NASDAQ:MRVL), which also sports a new dividend, recently yielding 2.3%. The company is also engaging in stock repurchases. Marvell's stock has been unloved lately, as it has been hurt by a weak PC market. Its growing interest in cloud computing is promising, though, as is its new processor for low-cost smartphones and tablets.

Eagle Asset Management reduced its stake in lots of companies, including Skyworks Solutions (NASDAQ:SWKS), which is a semiconductor company supplying, among other things, radio chips for iDevices. Its focus extends beyond smartphones, though, as it also supplies the car market and medical devices. It sports a strong balance sheet and robust profit margins, but is vulnerable to weakness in Apple, and some see it with insufficient competitive advantages. Skyworks recently posted strong earnings, surpassing estimates.

Finally, Eagle Asset Management's biggest closed positions included ONYX Pharmaceuticals and Georgia Gulf. Other closed positions of interest include New York Community Bancorp (NYSE:NYCB), which is most notable to some because of its 7.5% dividend yield. It has been growing via acquisitions lately, and bulls love that its CEO has been with the company for decades and is heavily invested in it -- literally. Its management is known for prudent management of credit risk.

We should never blindly copy any investor's moves, no matter how talented the investor. But it can be useful to keep an eye on what smart folks are doing, and 13-F forms can be great places to find intriguing candidates for our portfolios.

Longtime Fool contributor Selena Maranjian, whom you can follow on Twitterowns shares of Apple and Qualcomm. The Motley Fool recommends Apple and owns shares of Apple and Qualcomm. Try any of our Foolish newsletter services free for 30 days. We Fools don't 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.