Don't know much about the Tick Indices.. but don't they show the number of stocks ticking up vs ticking down?
So technically, if the up ticks are bigger than the down ticks... it's possible for the market to trend up, but the Tick Index to drop...?
So 100 tick up and 120 tick down, but the market weight is with the upticks so Tick Index is -20 and SPX goes up....
Well I don't know... I never look at this stuff.... I'll put up the Tick-ASX index for Australia...