cua-auto-mark-last-change

cua-auto-mark-last-change is a variable defined in `cua-base.el'.
Its value is

nil

Documentation:
If non-nil, set implicit mark at position of last buffer change.
This means that C-u M-x cua-set-mark will jump to the position
of the last buffer change before jumping to the explicit marks on the mark ring.
See `cua-set-mark' for details.

You can customize this variable.