Asian shares gain, with South Korea's Kospi up 6%, after the US Treasury expands its debt buybacks

Asian shares advanced following the US Treasury Department's announcement that it would at least double its planned purchases of longer-term government debt. This move was viewed as easing pressure on share prices by pushing bond prices higher and bringing down yields. Major indices saw gains, with South Korea’s Kospi jumping 6.1%, and memory chipmakers like Samsung Electronics and SK Hynix reporting significant jumps.