Commodity trading covers one of the broadest asset categories in finance — from agricultural staples like corn, wheat, and soybeans to energy products like crude oil, natural gas, and gasoline, to metals including gold, silver, copper, and platinum. Each commodity has distinct supply and demand dynamics, seasonality patterns, storage characteristics, and production cycles that drive price behavior differently from equity markets. Understanding how commodity prices are quoted, how contract specifications determine trade economics, and how supply-demand fundamentals translate to price moves is the foundation of any systematic commodity approach.
Supply-Demand Analysis in Energy
Crude oil pricing is driven by OPEC+ production decisions, US shale production response to price signals, global demand growth (dominated by Asia, particularly China), refinery capacity utilization, and geopolitical disruptions. The most market-moving data: US Energy Information Administration (EIA) weekly inventory reports released Wednesday at 10:30 AM Eastern, which show changes in crude oil, gasoline, and distillate inventories. A larger-than-expected inventory build (surplus crude sitting in storage) is bearish for prices. A larger-than-expected draw (more crude consumed than produced domestically) is bullish.
Michelle, 40, in Houston, Texas trades crude oil futures. She tracks the 5-year seasonal average inventory level to understand whether current inventories are high or low relative to historical norms. Current inventories 15% above the 5-year average seasonal level is a bearish storage signal — there's physical crude sitting in tanks that the market must consume before prices can rally significantly. Combining inventory analysis with OPEC production data and demand forecasts forms her fundamental thesis before she considers any technical entry.
Position Sizing and Risk Management in Commodities
Commodity futures are among the most volatile instruments in financial markets. Natural gas (NG) regularly moves 5 to 10% in a single session on weather reports or inventory surprises. A single NG contract at $2.50/MMBtu controls $25,000 notional value, with initial margin around $1,800. A 10% adverse move = $2,500 loss — more than the margin posted. Commodity traders who are not sizing positions relative to account size and stop-loss distance get margin-called on routine volatility.
The standard approach: determine maximum acceptable loss per trade (1 to 2% of account is standard for systematic traders), calculate the dollar risk of the stop-loss distance in the specific contract, and size the position accordingly. With a $50,000 account risking 1.5% per trade ($750 maximum risk), and a natural gas trade with a $500 stop-loss risk per contract, the appropriate position is $750 ÷ $500 = 1.5 contracts → 1 contract (round down to avoid overrisk). This framework applies identically across all commodity markets regardless of volatility level.