Sheds giant Logicor is being prepped for a £4bn London stock market float.
Blackstone, which owns Logicor, is preparing to interview investment banks this summer to assess its options, according to the Sunday Times.
Options could also include selling Logicor to property investors or sovereign wealth funds.
Logicor, which owns 600 warehouses and counts Amazon among its tenants, was set up by Blackstone in 2012.
A float was estimated to give Logicor a market value of more than £4bn, making it the biggest London listing of the year.
Blackstone declined to comment. The company operates in 18 European countries and could choose to float in a different city.
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