US Stock Market Move | The fourth generation technology of SuperFlash has officially started production. Shares of United Microelectronics Corp. Sponsored ADR (UMC.US) surged over 14% in pre-market trading.

22:06 20/01/2026

On Tuesday, United Microelectronics Corporation (UMC.US) surged more than 14% in pre-market trading, bringing its total gain for the year to 18%. It is currently trading at $10.66.

On Tuesday, United Microelectronics Corp. Sponsored ADR (UMC.US) surged more than 14% in pre-market trading, up 18% year-to-date and currently trading at $10.66. In terms of news, Microchip Technology Incorporated's subsidiary, Silicon Storage Technology, Inc. (SST), and United Microelectronics Corp. Sponsored ADR jointly announced that they have completed the full certification and official production of SST's embedded SuperFlash fourth generation (ESF4) technology on UMC's 28HPC+ process platform for automotive Grade 1 (AG1). Compared to other foundries' 28-nanometer high-K metal gate (HKMG) embedded flash solutions, ESF4 has significant advantages in process complexity and cost control, bringing higher manufacturing efficiency and economic benefits to customers.

SUNHO BIO-B(02898): Jiang Xiaoling appointed as Chief Executive Officer and Chief Scientific Officer

RIMAG GROUP (02522) has issued 6.13 million H shares of bonus shares.

CHINA ITS (01900) subsidiary redeeming private equity fund interests

SUNHO BIO-B(02898): Jiang Xiaoling appointed as Chief Executive Officer and Chief Scientific Officer

RIMAG GROUP (02522) has issued 6.13 million H shares of bonus shares.

CHINA ITS (01900) subsidiary redeeming private equity fund interests