Sumitomo Mitsui Trust Bank has agreed to acquire a 15% stake in privately owned infrastructure investment manager Morrison, marking a significant entry into the alternative assets space for the Japanese lender.

The trust bank unit of Sumitomo Mitsui Financial Group is leveraging Morrison’s expertise in data centres, where the firm has turned an initial $800 million bet into a portfolio valued at $18.5 billion.

This move signals a strategic pivot for the bank, which is seeking to diversify its investment footprint beyond traditional banking assets into high-growth infrastructure sectors.

The acquisition highlights the growing appetite among major financial institutions for exposure to the digital infrastructure boom, particularly as data centre demand continues to outpace supply globally.

Morrison, known for its successful track record in the sector, will benefit from the capital injection and the strategic partnership with one of Japan’s largest trust banks.

The deal underscores the increasing convergence between traditional finance and alternative asset management, as banks seek new avenues for yield generation in a low-interest-rate environment.