3 ms·
in general they are very close but at times of extreme volatility they can differ quite a bit, as was the case several days ago when GDAX surged up past $19,000
by scrumbledober 9y ago
in general they are very close but at times of extreme volatility they can differ quite a bit, as was the case several days ago when GDAX surged up past $19,000/BTC and then crashed.