An Apple supplier based in Taiwan is battling an international investor over its multibillion-dollar cash pile in a case that signals burgeoning shareholder activism in the territory. Catcher Technology, which manufactures electronic casings for Apple devices made in China, is being challenged by Hong Kong-based investment firm Argyle Street Management to improve its governance and return some of its $4.2bn of net cash to shareholders, according to people familiar with the discussions. Argyle holds about 1 per cent of Catcher’s shares and is one of a number of its foreign institutional shareholders alongside Franklin Templeton, Singapore’s GIC and Cathay Life...