Quote from mbusch:
Inefficiency as in at an excessive premium to the cash, or what?
in any market, if you can find a inefficiency, its like finding gold in them hills, inefficiency is result of market dynamics that are beyond the control of the market participants, secondary to liquidity/positioning dynamics, and the need to prove a point.
if price moves up in a straight line or down in a straight line its a inefficiency.
if price ranges in 50 point grid thats a inefficiency.
if price has a tendency to trend the 2nd half of trading session, thats a inefficiency.
if price moves 'coast to coast', thats a inefficiency.
if price moves thats a inefficiency.
if price bounces off support and resistance zones, thats a inefficiency.
basically any characteristic that is peculiar to that market, that occurs repetitively.
market participants basically game the failure of one inefficiency over another.