Infratil (ASX:IFT,NZE:IFT) investment in CDC data centers saw a AU$77 million valuation increase over the three months to September 30, according to a Tuesday filings with the Australian and New Zealand bourses.

The company's 49.72% stake in CDC is now valued at AU$6.78 billion, up from AU$6.75 billion as of June 30, the filing said.

Infratil also expects to commit a further AU$250 million within the next six months to continue to fund CDC's development pipeline.