SK Telecom is trading 5.19% up at $40.30 after no clearly reported company-specific catalyst was identified for August 21, 2026.

  • The latest company news was a move to stop new 3G subscriptions, number transfers, and device changes beginning August 20, while supporting migration to LTE and 5G; its timing and direction do not establish a cause for the pre-market gain.
  • Broader U.S. futures are modestly higher, but the move is larger than that market context.