SINGAPORE, April 18 - Shares of Bank Syariah Indonesia (BSI) surged as much as 5.6% on Thursday after Reuters a day earlier reported on talks about a possible stake acquisition in Indonesia's top Islamic lender by Abu Dhabi Islamic Bank (ADIB).

Shares of BSI rose to as much as 2,620 rupiah and were later trading at around 2,600 rupiah. Shares of the lender have climbed over 50% year-to-date, giving it a market cap of some $7 billion, LSEG data showed. (Reporting by Yantoultra Ngui; Editing by Muralikumar Anantharaman)