Quote from brocklanders:
I noticed this too and actually got filled on a sell limit order during this spike. It did not appear on the CL or WTI though.
I looked at the time and sales and for some reason prices skipped up from 88.60 to over 89 in just one or two very low volume trades. Then the next trade printed 90.30 for 30 contracts I think it was. This accounts for the large spike you see on the QM chart. The next trade falls back down to under 89 and back in line with the market.
Normally I would say it was a data problem but since I had a sell order actually fill at my limit price it was real. I would like to know how it happened also. Pretty crazy.