Shares in Hewlett Packard (HP) had risen by almost five per cent at the close of the New York Stock Exchange yesterday (30 January).
The surge was in anticipation of the European Commission's decision later today on whether to allow the £17.5bn purchase of Compaq to go ahead.
It is expected that the Commission's competition unit will give the green light to the deal after questioning suppliers, customers and competitors of the two companies for the last month.
HP chief executive Carly Fiorina hopes that the buyout will reduce dependency on the struggling hardware business, and produce a services company to rival IBM with estimated revenues of £55.8bn.
But the deal has faced much public criticism from the Hewlett and Packard families and industry analysts.
If the two companies also get the go ahead from the Federal Trade Commission in the US it will go to a shareholder vote in early March.
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