Quote from Batman28:
Don't know - but I beleive they're essentially market makers. I guess they might use some statistical price ideas etc for their inventory to study supply and demand. but I doubt it if they ever move markets.
On the NYMEX where 90% of the trading is in spreads, the locals look at historical relationships that are displayed visually via charts and more often than not will also apply technical analysis to those charts.
Even the quickest of "scalpers" on the CBOT or CME will take a look at where various moving averages are coming thru, support/resistance levels, not too mention a fibonacci calculation or two.
In other words:
TECHNICALS