has bought a 40% stake in a US office portfolio from the Canada Pension Plan Investment Board (CPPIB).

The real estate subsidiary of the Caisse de deÌ�poÌ‚t et placement du QueÌ�bec said it paid $200m (€160m) for the stake in a portfolio of properties in Denver, Colorado.

The portfolio includes the US Bank Tower and the Tabot Center.

had owned the stake since 2007.

Ivanhoe� Cambridge said the deal made it one of Denver’s main commercial business district landlords, with around 6% of class A office space.

The company said the US city offered a top-performing office market, driven by high-growth industries, including energy, healthcare, technology and aerospace.

The transaction is Ivanhoe� Cambridge’s sixth with Callahan Capital Properties, which will asset manage the portfolio and is also an equity partner.

The two companies have jointly invested more than $2.4bn in US real estate.

Adam Adamakakis, executive vice-president for US investments at Ivanhoe� Cambridge, said the company was looking to build a “critical mass of high-quality office properties�, while diversifying across the US.