Private investment house Ardian closed its Ardian Infrastructure Fund V at €6.1 billion in under six months, bringing total AUM to $15 billion across Europe and the Americas.

The fund, which is the largest Europe-focused investment vehicle ever raised, will upgrade and digitize transport, energy and other public infrastructure assets.

Ardian said the fund saw participation from 125 investors from Europe, North America, Asia and the Middle East, comprising major pension funds, insurance companies, financial institutions, high-net-worth individuals and sovereign wealth funds.

Of the total investors, 30% were new, while the remaining capital was pooled in by former investors that renewed their commitments.