Once a darling of investors, Infosys lost much of its luster after several quarters of disappointing results.

WSJ: Infosys Shares Plunge on Weak Results

Other islands that lost island status when developers joined their landmass with the mainland include Darling Island, which became part of the mainland in the late 1840s and later became the base of Darling Harbour, a popular restaurant and entertainment hub in the suburb of Pyrmont.

BBC: The islands of Sydney Harbour

Once a darling of investors, India- and U.S.-listed Infosys lost much of its luster after several quarters of disappointing results.

WSJ: Infosys Shares Plunge on Results, Outlook