KARACHI Summit Bank Ltd (formerly Arif Habib Bank Ltd) and mybank Ltd have officially merged and started operating as a single bank under the name of Summit Bank. The completion of the legal merger means that the two banks can now make accelerated progress. With effect from the merger date, they are allowed to exchange and share client information and start technical migration of client data. Summit Bank has now become a significant player as the consecutive mergers earlier with Atlas Bank and now with Mybank have placed the Bank in an important position.