The price and value of the product may be affected by changes in overall market movements, commodity index volatility, changes in interest rates, or factors affecting a particular industry or commodity. (investor.vanguard.com)
Because this goal requires the ability to avoid risk during certain conditions, the Funds may not track overall market movements, particularly over short periods of time. (hussmanfunds.com)
The value of commodities investments will generally be affected by overall market movements and factors specific to a particular industry or commodity, including weather, embargoes, tariffs, or health, political, international and regulatory developments. (funds.eatonvance.com)