Infratil (ASX:IFT,NZE:IFT) investment in Longroad Energy and Galileo saw a decrease over the three months to June 30, due to an increase in discount rates, according to Wednesday filings with the Australian and New Zealand bourses.

The company's 37.7% stake in Longroad is now valued at $1.18 billion, down from $1.2 billion as of March 31, the filing said.

Its 38% stake in Galileo fell to between 129.2 million euros and 207.7 million euros, down from between 143.7 million euros and 201.1 million euros, the filing said.

However, IFT's investment in Qscan is now valued between AU$406 million to AU$449 million, up from AU$394 million to AU$436 million, driven by cash flow roll-forward and two clinic acquisitions.

Shares of the company rose nearly 2% in New Zealand trade.