Bitcoin rose back above the $50,000 mark on Tuesday after plunging in September from the same level on fears about regulation in the U.S. and China. Bitcoin rose as high as about $50,400 on Tuesday, topping a key psychological resistance level for traders. It last traded 2% higher to $50,339.18. It’s currently up 14% so far for the month of October and has gained 72% on a year-to-date basis. The last time bitcoin broke $50,000 was at the start of September, when the cryptocurrency became legal tender in El Salvador. Cryptocurrencies have been rallying since Friday as investors bet on a fourth-quarter run. Bitcoin ... (full story)