Infrastructure investment company, International Public Partnerships (IPP), on Monday reported strong performance in a trading statement for the period from 1 July to 7 November. The group's portfolio of 112 public infrastructure investments is forecast to produce asset value growth results, in line with expectations.Since IPP made its initial public offering debut in November 2006, the firm's total shareholder return has soared 103.3%.Net asset value accretion is being driven "by organic growth in value of the portfolio, including through recent acquisitions, continued growth in valuations and macro-economic factors including movements in government bond yields".In addition, 2015 is expected to be a particularly successful year, following the development of new opportunities in the UK, Ireland, Belgium, Holland, Canada, Australia and New Zealand.Following the announcement, the company's share price increased 0.25% to 138.85p per share as of 11:33 on Monday.