UMC Buyback Week Puts Focus on Chip Stock’s Rally

United Microelectronics Corp is in the spotlight for its buyback as a fresh week starts. The chipmaker’s Taiwan-listed stock surged nearly 20% last week. On Friday, a U.S. filing showed UMC spent NT$406.6 million repurchasing its own shares. The Taiwan Stock Exchange was closed for the weekend and is set to open Monday at 9:00 a.m. in Taipei, with trading until 1:25 p.m.

16 May 2026

UMC stock jumps 10% toward a fresh high ahead of United Microelectronics earnings

United Microelectronics Corporation’s U.S.-listed shares surged roughly 10% to near $12.46 on Tuesday, hitting $12.68 at one point — marking a 52-week peak — during trading in New York.

27 January 2026

Earnings Reports·NYSE:UMC·Semiconductors·Stock Market·TWSE:2303