Shares of Rambus ( RMBS) were among technology's winners Wednesday, rising 7% after company signed a licensing agreement with Toshiba. The agreement calls for Rambus to license its patents for SDRAM and DDR SDRAM memory controllers to Toshiba. "Toshiba was our first patent licensee and we are pleased to continue this long and valuable relationship with a trusted partner," Rambus said. "Our focus of licensing industry-leading companies with both our products and patents continues to help push the boundaries of what our collective engineering teams can accomplish." Financial terms of the deal were not disclosed. Shares of Rambus were trading up $1.65 to $24.42. Marvell Technology ( MRVL) slid 8% after the chipmaker said that it received an informal inquiry from the Securities and Exchange Commission related to its stock-option grants and practices. In addition to the SEC inquiry, the company also said it received a grand jury subpoena from the U.S. Attorney for the Northern District of California seeking documentation related to the options issue. The company, which has launched its own internal review, said it intends to cooperate with both requests. Marvell also said that a shareholder lawsuit has been filed in federal court related to its stock-option practices. Shares were trading down $3.11 to $41.73. Zoran ( ZRAN) also said it is being informally investigated by the SEC and that it received a Justice Department grand jury subpoena related to its stock option-grant practices. The U.S. Attorney for the Northern District of California is seeking documents from 1995 to present. Meanwhile, the chipmaker said it has set up its own special committee to conduct a review of its historical option grants. The company said it plans to cooperate with both the SEC and U.S. Attorney's office. Shares were trading down $1.91, or 8%, to $22.40. Shares of Millicom International Cellular ( MICC) rebounded somewhat after the telecom company posted a big jump in second-quarter subscribers. The cellular operator added more than 1.4 million subscribers during the quarter, bringing total subscribers to 10.9 million. The subscriber increase represents sequential growth of 15% and year-over-year growth of 62%. The subscriber figures exclude about 400,000 subscribers in Pakcom, reflecting the disposal of Millicom's Pakcom business. Shares were trading up $2.36, or 7%, to $35.69 after falling nearly 30% Monday on news that it had ended talks to be acquired.