There are two ways we can go from here in my opinion.
866 is a point of support for us, if that gets broken we will absolutely test the 855 range. If that gets broken, 841-839 is our next stop.
However I think if we close above the 866 support, we may see a climb to the upside to test resistance at 876, if that gets broken we may see 888 or 890 being tested.