Extension signal on NASDAQ100 futures means that current decline is becoming unsustainable and the market is likely to pause (or rebound) here for a few hours (given this 30 min timescale).
Interestingly, NASDAQ also provided us with advanced warning of this current equity
weakness. It displayed a
compression signal which was starting to break down, thus signalling start of a large directional move.
Interestingly, NASDAQ also provided us with advanced warning of this current equity
weakness. It displayed a
compression signal which was starting to break down, thus signalling start of a large directional move.
= large price move next
or 
= this price move ends