I'm not sure why it lags. Historically it has. Probably it is a...

I'm not sure why it lags. Historically it has. Probably it is a reaction to an increase in EDE SP and plays catch up. In my case if TAS gets behind then I usually sell EDE first then buy TAS. If others are doing the same it means that demand for TAS lags supply of EDE. Price is all about supply and demand not what someone thinks the value should be. While market sentiment is often wrong it still sets the market day by day.

I don't claim "wisdom". I claim to have had time in the game and hopefully I make informed decisions. Read MB's post on this thread where there is probably more wisdom.