Could be...
BMO just bought a US bank, CIBC is splitting it's stock for more shares to do what with? Buy another smaller US bank?
Could be they know cannabis dollars will be freed up soon with truckloads of cash being transfered to the banks offering the best deals on their deposits? Banks lining up to take it too, with interest rates going up they can make more money lending out all that cannabis cash.
Just thinking out loud.