Recently, there has been talk that the large number of new commodity ETFs has added to the rise in prices. (bespokeinvest.typepad.com)
That's partly a result of the recovery in energy and materials stocks, as valuations adjust to new commodity price levels. (canadianbusiness.com)
On the margin, however, the quantity of new commodity money entering such systems will be small compared to the total supply of the commodity in any given period of time. (alt-m.org)