3i Infrastructure, a publicly traded fund managed by UK-listed private equity group 3i, has invested 60% of the £703m (€1bn) money raised in its March flotation as interest in infrastructure assets booms amid turbulence elsewhere.

3i said the fund, which is a component of the FTSE 250 index, is on course to be fully invested within two years of listing. It was raised as part of 3i's strategy of diversifying its offering. The group now has five arms: venture capital, growth capital, buyouts, infrastructure and public equity investments.