Mid day trend I think my prediction might become pretty accurate if somebody was to pick up the asks at 18.5. Whilst many people will have a diverging interpretation, at least some people will see this as a signal that 17./18 and 18.5 is probably the best they can hope for generating an increase in bid sizes which will in turn push more risk-tolerant trader to buy the 19/19.5 asks. If it occurs quickly enough, than I predict a little run above 20 before a pretty large sized dump as soon as somebody fills any bids of substantial size.