Investing in Commodities
Diversify across physical raw materials, futures contracts, contango roll yield, and inflation hedging commodity indexes.
TL;DR
- Diversify portfolios with raw physical inputs including
energy-and-metals. - Beware of severe
contango-roll-yielddrag in commodity futures funds. - Deploy commodities tactically to hedge unexpected macroeconomic
inflation-spikes.
Major Commodity Sectors
Energy CommoditiesCrude oil, natural gas, and refined petroleum products.
Crude oil, natural gas, and refined petroleum products.Precious MetalsGold and silver acting as monetary stores of value and safe havens.
Gold and silver acting as monetary stores of value and safe havens.Industrial Metals And AgsCopper, lithium, corn, wheat, and soybeans powering industry.
Copper, lithium, corn, wheat, and soybeans powering industry.Futures Curve Dynamics: Contango vs Backwardation
Contango (Negative Roll Yield)Futures price exceeds spot price; rolling contracts produces drag.
Check whether future price is greater than spot price.Backwardation (Positive Roll Yield)Spot price exceeds futures price; rolling contracts generates profit.
Check whether spot price is greater than future price.Cost of CarryPhysical storage, financing interest, and insurance expenses.
Set cost of carry to storage plus interest plus insurance.Commodity Investment Vehicles
Physically-Backed ETFsFunds holding vaulted physical bullion like gold and silver.
Funds holding vaulted physical bullion like gold and silver.Futures-Based Index FundsFunds rolling front-month futures contracts continuously.
Set futures-based index funds to spot move plus roll yield plus tbill yield.Natural Resource EquitiesOperating mining and energy companies distributing cash dividends.
Set natural resource equities to operational profits plus dividends.Role In Portfolio Architecture
Inflation Shock CushionCommodities surge when unexpected inflation damages stocks and bonds.
Check whether correlation with cpi spike is greater than 0.70.Non-Correlated DiversifierLow correlation to equity indices improves portfolio Sharpe ratio.
Low correlation to equity indices improves portfolio Sharpe ratio.Tactical Allocation CapCap total commodity exposure at 3% to 5% to avoid cash drag.
Set tactical allocation cap to portfolio times 0.05.Tips
- Invest in commodity producer equities (mining and energy firms) which generate cash flow and dividends rather than negative
roll-yield. - Limit pure broad commodity allocations to under
5-percentof total portfolio assets to control cyclical volatility.
Warnings
- Never hold futures-based commodity
ETFsfor multi-year periods when the futures curve is steepened in structural contango. - Remember that physical raw commodities generate zero internal
cash-flow, unlike dividend-paying corporate equities or coupon-yielding sovereign bonds.
In Practice
Calculate the capital decay caused by rolling commodity futures contracts forward through a contango market curve.
An investor holds a commodity futures fund subject to contango roll yield drag over 6 monthly contract roll cycles.
- 1. Spot crude oil price trades flat at $75.00 per barrel over 6 months.
- 2. Fund must roll expiring contracts into next-month futures priced at $76.50 (2.0% contango premium).
- 3. Compute single-month roll loss: ($75.00 - $76.50) / $76.50 = -1.96% drag.
- 4. Compound 2% roll drag across 6 consecutive months: (1 - 0.02)^6 = 0.8858 (-11.42% cumulative drag).
- 5. Calculate ending fund value from $10,000 initial capital: $10,000 * 0.8858 = $8,858.
Contango roll drag erodes $1,142 from portfolio despite flat spot commodity prices.
Futures roll yield in contango markets imposes severe drag on long-term commodity fund holdings.
FAQ
Contango occurs when future contract prices exceed current spot prices due to storage and insurance costs. When a fund rolls expiring contracts into higher-priced future months, it sells low and buys high, generating negative roll yield.
Backwardation occurs when current spot prices exceed future contract prices due to immediate supply shortages. Rolling contracts forward in backwardation generates positive roll yield for futures fund holders.
Commodities exhibit low or negative correlations to traditional equities and bonds and serve as a potent hedge against sudden supply-side inflation shocks, such as oil embargoes or geopolitical crises.