Bitcoin retreats for second day on weak demand

Bitcoin fell marginally on Thursday for the second session on weak investment demand on crypto assets following a spate of negative news for the market. 

At Bitstamp, Bitcoin fell $20, or 0.3% to $6,420, with an intraday high at $6,490, and a low at $6,413. 

Bitcoin lost 0.3% on Wednesday, the first loss in three days on profit-taking off three-week highs at $6,756. 

The Chicago Exchange reported that average daily trading volumes for Bitcoin futures rose 41% in the third quarter from the second, with open contracts increasing by 19%. 

However, that's a considerable slowdown in growth from the second quarter's 93% surge in trading volumes. 

Otherwise, Reuters reported that investment giant Barclays, which has $1.1 trillion in assets, is putting off plans for a crypto trading office due to regulatory uncertainty and lack of interest from clients as the crypto market faces a violent selloff. 

Bitcoin lost 5.9% last week, the third weekly loss in a row after warnings by IMF on crypto assets' impact on the global market. 

The International Monetary Fund warned that the growth in crypto assets could create new weak points in the international financial system.