Yes they do... and if it was an exceptionally small bank that didn't have it at the moment, with a day or two notice, they'd happily give you $100k in cash afte

Yes they do... and if it was an exceptionally small bank that didn't have it at the moment, with a day or two notice, they'd happily give you $100k in cash after receiving it from the Fed or from their vault cash providers. A busy ATM will contain more than $100k and on premises ATMs are often refilled from the bank's vault.