Infrastructure investment company HSBC Infrastructure Company (HICL) has upped its investment in the Dutch high speed rail public/private partnership (PPP) project.HICL has increased its equity and loan note interests in the project to 42.99% from 37.50% at a cost of €11.6m.The price paid compares favourably with the valuation of the project in the company's portfolio as at 30 September 2010, the company said. The acquisition brings the number of incremental acquisitions undertaken by the company since launch to nineteen. The company recently announced it is scheduled to change its name to HICL Infrastructure on 29 March.