Commodity miner and trader Glencore has agreed to sell 40 per cent of its agricultural unit to Canada's state pension fund for $2.5 billion, the company's latest step to cut debt and soothe investor concerns about the impact of weak commodity prices.

The sale values the agricultural unit as a whole at close to the initially expected $10 billion, including $0.6 billion in debt and $2.5 billion in inventories, and comes after Glencore said last month it was stepping up its debt reduction plan by unloading more assets.

The group said it aimed to cut net debt to between $17 billion and $18 billion by the end of 2016, $1 billion more than previously planned and down from a peak of $30 billion last year.

The purchase is by the pension fund's investment unit, Canada Pension Plan Investment Board (CPPIB), which seeks long-term low-risk investments to fund the retirement of some 18 million Canadians.

"Glencore Agri complements our existing portfolio of agriculture assets, bringing global exposure, scale and diversification," CPPIB's global head of private investments, Mark Jenkins, said in a statement

Glencore's stock had collapsed to below 70 pence at the end of last year, a fraction of its peak 556p following its 2011 flotation, due to investor worries over its heavy debts coupled with slumping copper and coal prices.

INVESTMENT GRADE

The stock has, however, doubled in value since then, after the company took steps to cut debt and protect its investment- grade credit rating, by raising money via a share issue, reducing inventories, suspending dividends and selling assets.

Glencore expects the deal to complete in the second half of 2016. The business comprises more than 200 storage facilities globally, 31 processing facilities and 23 ports, allowing Glencore to trade grains, oilseeds, rice, sugar and cotton.

It generated core earnings of $524 million in 2015 and had gross assets of more than $10 billion.

Under the agreement, Glencore has the right to sell up to a further 20 per cent stake. Glencore and CPPIB may also call for an initial public offering of Glencore Agri after eight years from the date of completion, the companies said.

Glencore Agri would be run by current chief Chris Mahoney and a board to which CPPIB and Glencore would each appoint two directors.

Shares of Glencore rose as much as 2.2 per cent on the announcement of the disposal to rank among the biggest gainers in the blue chip FTSE 100 .FTSE index, before retreating to trade 1.7 per cent down by 1005 GMT. The FTSE was up 0.4 per cent.

Barclays, Citi and Credit Suisse were Glencore's joint financial advisers and Linklaters LLP provided legal advice. Deutsche Bank was sole financial advisor to CPPIB. – Reuters