In other news
Asian stocks have declined, with a regional gauge heading for a one-week low, as Chinese shares tumbled the most since the depths of this year’s rout.
Europe's main stock markets have opened lower, with London's benchmark FTSE 100 index down 0.6% at 6 357.42 points.
UK house-price growth has slowed to a five-month low in November, according to Nationwide Building Society, which also noted a shortage of properties for sale.
The euro has hovered around seven-month lows and was also weak against Asian currencies on speculation that the ECB will unleash fresh stimulus measures.
China’s stocks have tumbled as some of the largest brokerages disclosed regulatory probes, industrial profits fell and two companies flagged bond payments.
Oil prices have traded below $43 in Asia as US markets took a break for Thanksgiving and Russia ruled out a military strike against Turkey for shooting down a warplane.
US stocks have risen slightly in early trade following a stream of economic data in the last trading session ahead of the Thanksgiving holiday.
The Department of Trade and Industry is inviting South African exporters of Halaal-approved items and services to apply to participate at an exhibition in the Malaysia.