Midday Movers: Sempra Energy, Electronic Arts & More

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Take a look at some of Thursday's midday movers:

Sempra Energy (SRE) was the worst performer on the S&P 500 after the energy company lowered the top end of its guidance for 2013 and offered a weak outlook for 2014.

Shares of software game maker Electronic Arts trended higher. A Morningstar analyst suggested that improved functionality of Microsoft's Xbox One may benefit makers of sports games. Stifel Nicolaus raised its price target on Electronic Arts to $26 from $22.

Seagate Technology hit a new all-time high after an upgrade to "buy" from "hold" at Deutsche Bank; price target raised to $46 from $40 per share.

Cirrus Logic shares were crushed after reports that the company's CEO Jason Rhode lowered the chip maker's longer-term view on margins citing pricing pressures in the smartphone market. Stifel Nicolaus downgraded Cirrus Logic to "hold" from "buy."

Semtech shares were lower after reporting first-quarter earnings in line with analysts' expectations.

Stocks at 52-week highs include Dover, Pandora and Stein Mart.

Stocks at 52-week lows include Vale and Xoom.

(Read More: CNBC's Market Insider Blog)

—By CNBC's Lori Spechler

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