Chartered Semiconductor Manufacturing (CSM) – Shares of contract chipmaker CSM surged 13 per cent to a four-month high of $0.97 with over 32 million shares traded on speculation of a possible bid for the firm, dealers said. 'Chartered Semi is quite a capital intensive company - they put in a lot of effort to upgrade their technology but they haven't been very profitable,' a dealer said, adding that the firm could receive interest from buyers to take Chartered private. Another dealer said there have been talks to take the tech firm private, with a price of around $1.20 per share. According to Reuters data, Temasek Holdings owns about 51 per cent of Chartered, which is also listed in the United States. Temasek declined to comment.