[Bitcoin leads the cryptocurrency market value back to more than 3 trillion US dollars] September 22nd, after Bitcoin’s stunning rebound, the market value of digital assets returned to 3 trillion US dollars for the first time since January; but traders have also poured into leveraged trading of perpetual futures, which increases the risk of rapid price fluctuations. According to CoinGecko data, the cryptocurrency market value has increased by more than $740 billion since the U.S. Treasury Department announced last month that it would increase the buyback of long-term bonds. Leveraged bets have also climbed. Coinglass data shows that open interest in perpetual futures for various tokens has climbed to nearly $160 billion, the highest level since late October last year.