May 4 (SeeNews) - The main equity index of the Zagreb Stock Exchange (ZSE), the CROBEX, extended its losing streak on Wednesday as strong gains in shipping company Atlantska Plovidba [ZSE:ATPL] and shipyard Brodogradiliste Viktor Lenac [ZSE:VLEN] failed to offset losses in heavyweights Hrvatski Telekom [ZSE:HT], food and pharmaceuticals producer Podravka [ZSE:PODR] and consumer goods distributor Atlantic Grupa [ZSE:ATGR], bourse data showed.