World shares headed for their best week in over a month on Friday, 20 November, though alarm bells over global growth were ringing in metals markets as copper hovered at its lowest level since 2009 and nickel since 2003.
The commodities crunch was compounded as the dollar began to flex its muscles again after a quiet two days; gold slipped back towards a 5-year low and as a major sea freight index hit its lowest level on record.
However, global stock markets seemed largely oblivious.
Wall Street expected to start 0.2 to 0.3% higher with its main S&P 500 and Dow Jones Industrial indexes on course for near 3% rises on the week.
European shares were barely budged as the main London, Frankfurt and Paris markets headed for 2 to 3.5% weekly gains and Tokyo's Nikkei ended Asia's week near a three-month high.
The euro was sent tumbling back below $1.07 to $1.0670 as Mario Draghi gave the clearest hint yet that the ECB will expand its already €1 trillion stimulus programme next month and cut its key deposit rate even deeper into negative territory.
"If we decide that the current trajectory of our policy is not sufficient... we will do what we must to raise inflation as quickly as possible," Draghi said at a conference in Frankfurt, adding that a decision will be made at the ECB's 3 December meeting.
One of the most striking things is that the move will come just over a week before the ECB's U.S. counterpart, the Federal Reserve, is likely to deliver the first hike in U.S. interest rates rise in almost a decade.
The expected divergence pushed the dollar back up towards a 7-month high against a basket of top currencies in early European trading. Goldman Sachs on Thursday made a stronger greenback its top trade tip for 2016.
The prospect of higher Fed rates and dollar, alongside concerns about China's economic health continue to create uncertainty.
For example, copper - seen as a good gauge of the global economy because of its wide industrial use - has been hit by persistent worries that supply cuts won't suffice to offset the pressure on prices caused by weak demand in top user China.
It slumped to a 6-1/2-year low of $4,573.50 per tonne before bouncing back to $4,650.00, still down 3.8% so far this week.
The Baltic Index, which tracks rates for ships carrying dry bulk commodities and is viewed as a good reflection of the health of world trade, having fallen 58.8% from its peak this year, experienced a record low.
"Many economies in Asia and emerging markets are still not doing that good. Demand for raw materials remain very weak," said Masahiro Ichikawa, senior strategist at Sumitomo Mitsui Asset Management in Tokyo.
Oil predictions
Oil prices were also not far from near three-month lows hit earlier this week.
Global benchmark Brent futures last stood at $44.40 per barrel, compared to Monday's low of $43.15 as U.S. crude sat just above $40 a barrel.
Crude futures have already lost around 60% of their value since mid-2014 as supply exceeds demand by roughly 0.7 million to 2.5 million barrels per day to create a glut that analysts say will last well into 2016.
Market data also suggests oil traders are preparing for another drop in prices by March, 2016, as what is expected to be an unusually warm U.S. winter dents demand just as Iran's exports hit global markets after its sanctions are ended.
"Uncertainty is so high in the world's crude markets," said Kang Yoo-jin, commodities analyst at NH Investment and Securities based in Seoul. "Prices will have high volatility in 2016 and particularly in the first half."
In debt markets 2-year US yields were up for their fourth week in the last five.
Meanwhile, Greek bond yields headed back towards their lowest levels in more than a year after Greece's parliament approved a reform bill late on Thursday, 19 November, to secure further bailout funds from its international lenders.
Mario Draghi's soothing sounds also underpinned the broader euro zone bond market as core German Bunds, but also French, Italian and Spain bonds, cruised towards their second straight week of yield falls.
Neil Williams, chief economist of fund manager Hermes in London, said that one of the things helping equity markets was the increasing degree of clarity on what the Fed and ECB will do next month and on China's support plans for its economy.
"China obviously needs watching. When a $10-1/2 trillion economy which accounts for about a half of the world's commodity demand slows we need to take notice," Williams said. "But I'm increasingly reassured that they have the policy buttons to press and are pressing them."
