Among the companies whose shares are moving in pre-market trading Tuesday are Ceragon Networks, Renren, Strategic Hotels & Resorts, Telefonica, EzChip Semiconductor, Banco Santander, Siemens, Pfizer and Goodyear Tire & Rubber.

Michael Kors Holdings Ltd (KORS) stock climbed 13.41 percent to $43.30 in pre-market trading. The company reported fourth-quarter net income of $0.22 per share, up from $0.10 per share in the same period last year. The company also expects full-year net income to be in a range of $1.08 to $1.12 per share on revenues of $1.7 billion to $1.8 billion. 

Ceragon Networks Ltd (CRNT) stock climbed 11.75 percent to $9.51 in pre-market trading.

Renren Inc (RENN) stock surged 5.27 percent to $4.79 in pre-market trading. The stock has a 52-week low of $3.21, a 52-week high of $11.99 and $1.75 billion.

Strategic Hotels & Resorts Inc (BEE) stock gained 3.04 percent to $6.10 in pre-market trading. The company stock plunged nearly 6 percent in regular trading Monday.

Telefonica S.A. (TEF) stock advanced 2.66 percent to $12.33 in pre-market trading. The company announced Sunday that it had agreed to sell almost half of its stake in China Unicom Ltd to its parent group, China United Network, for 1.1 billion euros to reduce its debt.

EzChip Semiconductor Ltd (EZCH) stock gained 2.56 percent to $36.80 in pre-market trading.

Banco Santander, S.A. (STD) stock gained 2.36 percent to $6.06 in pre-market trading. The company stock declined more than 3 percent Monday after Fitch Ratings downgraded Banco Santander’s long-term Issuer Default Ratings to BBB+ from A and Viability Ratings to bbb+ from a.

Siemens AG (SI) stock gained 2.20 percent to $82.73 in pre-market trading.

Pfizer Inc (PFE) stock advanced 0.77 percent to $22.27 in pre-market trading. The stock has a 52-week low of $16.63, a 52-week high of $23.30 and $165.49 billion.

Goodyear Tire & Rubber Co (GT) slumped 15.85 percent to $8.55 in pre-market trading. The stock has a 52-week low of $8.53, a 52-week high of $18.25 and $2.49 billion.