Mizuho Financial Group is trading 4.09% up at $11.20 in after-hours trading on October 1, 2026, with no clear company-specific explanation for the rise. - The stock had fallen during the regular session and closed at $10.76. - Mizuho’s completed buyback was reported, but the September 24 event does not establish a cause for the late rebound. - Broader markets were mixed, while bank shares faced pressure amid a Treasury selloff.