Book depth fell off and spread jumped on both Sept 7th and Dec 7th. This correlated with a dead-cat bounce in Sept. You can find the chart here: www.cmegroup.com/too...-liquidity-tool.html
In Sept, 3 days later was the peak, then more down. See if it confirms Tuesday or Wednesday.
In Sept, 3 days later was the peak, then more down. See if it confirms Tuesday or Wednesday.