SYDNEY (Reuters) -Binance Chief Executive Richard Teng said on Friday bitcoin's sharp drop in the past month was the result of investors deleveraging cryptocurrency holdings ​and risk aversion in line with that seen in most major asset classes. Bitcoin, the world'‌s most valuable cryptocurrency, has tumbled 21.2% in November, bringing losses over the past three months to 23.2%‌ as chances increase that it will end the year below $90,000. The slump comes after bitcoin hit an all-time peak above $126,000 in early October.