Peter Dubens splashes out on Monument July 2, 2005 Oakley Capital, the Aim-listed private equity vehicle founded by serial entrepreneur Peter Dubens, has bought derivatives, equities and fixed income broker Monument Securities for an undisclosed amount. The broker was acquired from Dutch firm Insinger de Beaufort, who bought Monument three years ago for £15m. Martin Burton, who founded Monument in 1991, will remain in [...]