Barclays is trading 18.55% higher at $28.02 after the October 1 regular-session close at $23.64; no reliable report explains the after-hours surge.
- Earlier coverage said UK bank shares fell as bond yields rose, with Barclays down nearly 4%; that does not explain the reversal.
- Barclays announced wider use of Anthropic’s Claude, but the morning announcement does not establish a reason for the late-session jump.