Mounting anxiety over global growth and the spread of Ebola dragged Asian bourses lower on Thursday.
European shares closed sharply on Wednesday as investors shunned risky assets on fears of crumbling global growth and weak economic data.
John Meyer, analyst at SP Angel, says Glencore will come back with another merger bid for Rio Tinto.
Most Asian bourses traded higher on late Wednesday, as benign Chinese inflation data fueled hopes of additional easing while a weaker currency provided support for Japanese shares.
Asian shares traded mixed on Tuesday as fears of global economic weakness affected investor sentiment.
Asian shares fell on Monday, adding to last week's tumble, as strong Chinese data failed to soothe worries about sluggish global growth.
Asian shares were mostly lower on Wednesday following a global rout but Shanghai bucked the trend after a week-long holiday.
Paul Gait, senior metals and mining research analyst at Sanford Bernstein, says there was a "compelling" strategic logic behind Glencore's merger bid for Rio Tinto.
Some of Tuesday's midday movers:
European shares closed lower on Tuesday, with sentiment curbed by weak economic data from Germany and a downturn on Wall Street.
The mooted takeover of mining giant Rio Tinto by upstart Glencore may, in the way of other mining mergers, never happen.
U.S. stock index futures indicated a lower open on Tuesday, as investors anxiously await the start of third-quarter earnings season.
Some of the names on the move ahead of the open.
Equities in Asia were mixed on Tuesday as investors focused on central bank decisions in Japan and Australia.
Jessica Ground, U.K. equities fund manager at Schroders, says Glencore's merger bid for Rio Tinto was a "smart move" as it would give it access to the iron ore market.
Rio Tinto rejected a merger approach from rival Glencore in August, the miner said on Tuesday. CNBC's anchors discuss what it means for the sector.
Tim Schroeders, Portfolio Manager at Pengana Capital, discusses news that Rio Tinto rejected a merger approach from smaller rival Glencore in August.
Rio Tinto rejected a merger approach from smaller rival Glencore to create a $160 billion mining and trading giant in August.
Some of Monday's midday movers.
Traders are also watching Brazil after its election surprise.