Gap example

Gap up and legs example

Tick divergence and premium example 

Tick leads market lower on the day of rate cut

Tick screen shows ticking weakening before S&P 
on day they cut rates (3/20/01)

VIX with the S&P
VIX is the option volatility index.  The VIX tends to move in the opposite 
direction of the market (S&P).  A VIX above 36 typically signals an extremely 
over-sold condition, or recent sharp drop in equity prices. The VIX can also be 
used to measure fear, and is also often referred to as "the fear-level" indicator.  The 
higher the VIX, generally the more fear there is in the market place. 

Day-Trading manual