Investors continued stakebuilding in the London Stock Exchange yesterday as shares hit a record, suggesting market participants believe the price of an eventual takeover will exceed Nasdaq's current "final offer".

Credit Suisse has upped its stake from 3.46% to 5.16%, according to regulatory filings yesterday. Goldman Sachs has also increased its stake, from 3.2% as of November 15 to 4.4%, again according to filings.