PhotoMedex, RF Micro Devices, Charles River Laboratories, Vera Bradley, Credit Suisse Group, Yum! Brands, Ceragon Networks, Lexmark International and Nokia Corp. are among the companies whose shares are moving in pre-market trading Thursday.

PhotoMedex, Inc. (PHMD) stock climbed 7.85 percent to $14.70 in pre-market trading. The company raised its fourth quarter revenue forecast to a range of $52 million to $54 million higher than previous estimation of $46 to $48 million.

RF Micro Devices, Inc. (RFMD) stock gained 2.50 percent to $4.51 in pre-market trading. The stock has a 52-week low of $3.45, a 52-week high of $5.69 and $1.23 billion in market capitalization.

Charles River Laboratories (CRL) stock gained 1.23 percent to $36.09 in pre-market trading. The stock tumbled more than 9 percent in regular trading Wednesday as its fiscal 2013 earnings guidance fell short of estimates. Currently, the company expects fiscal 2013 adjusted net profit to be in a range of $2.80 and $2.90 per share, below analysts' estimation of $3.02 per share.

Vera Bradley, Inc. (VRA) stock rose 1.41 percent to $24.48 in pre-market trading. The stock has a 52-week low of $18.91, a 52-week high of $39.48 and $979.17 million in market capitalization.

Credit Suisse Group AG (CS) stock gained 1.30 percent to $24.95 in pre-market trading. The stock has a 52-week low of $16.09, a 52-week high of $29.97 and $31.84 billion in market capitalization.

Yum! Brands, Inc. (YUM) stock advanced 1.27 percent to $68.50 in pre-market trading. The stock has a 52-week low of $57.09, a 52-week high of $74.75 and $30.56 billion in market capitalization.

Ceragon Networks Ltd. (CRNT) plunged 3.33 percent to $4.65 in pre-market trading. The stock has a 52-week low of $3.91, a 52-week high of $9.76 and $174.72 million in market capitalization.

Lexmark International Inc. (LXK) stock declined 2.03 percent to $24.57 in pre-market trading. The stock has a 52-week low of $16.10, a 52-week high of $38.34 and $1.62 billion in market capitalization.

Nokia Corp. (NOK) stock declined 1.04 percent to $3.79 in pre-market trading. The stock has a 52-week low of $1.63, a 52-week high of $5.87 and $14.34 billion in market capitalization.