Bitcoin soars past $1,700 for the first time

Bitcoin seems unstoppable, topping $1,700 for the first time on Tuesday.
The cryptocurrency trades up 3.45% at $1,720.82 a coin, as trade grinds higher for the 16th time in 18 sessions. It has gained nearly 50% during its run.
Tuesday's gain comes without any obvious catalyst as traders await the US Securities and Exchange Commission's ruling on whether it will reverse its decision to reject the Winklevoss twins' exchange-traded fund.
The SEC rejected two bitcoin ETFs back in March, saying it "