The FDIC almost only does bank closures on Friday (see https://www.fdic.gov/resources/resolutions/bank-failures/failed-bank-list/ https://www.fdic.gov/resources

The FDIC almost only does bank closures on Friday (see https://www.fdic.gov/resources/resolutions/bank-failures/failed-bank-list/ https://www.fdic.gov/resources/resolutions/bank-failures/fai... - there were a few non-Friday closures after the SVB failure but none before), the guess that SVB would be closed on Friday wasn't that fortuitous.