Introductory Context
"Quantitative commodity roll yield strategy on the Multi Commodity Exchange (MCX). Cross-sectional sorting on term structure carry and roll-down yields."
Harvesting the Commodity Curve: Backwardation vs. Contango Carry
Commodity futures contracts do not represent perpetual assets; they expire on fixed monthly or quarterly delivery dates. Consequently, long-term commodity investors cannot simply"buy and hold" a single contract; they must continually roll their exposure from the expiring front-month contract into the next active second-month contract.
Academic research by Erb & Harvey (2006) and Gorton & Rouwenhorst (2006) established that the returns of commodity futures are dominated by Roll Yield (Term Structure Carry):
- Backwardation (Front > Next): When spot and near-term physical demand is high relative to available inventory, the front-month contract trades at a premium to the second-month contract (P_1 > P_2). Long positions capture a positive roll yield as the lower-priced second contract appreciates toward spot as expiry approaches.
- Contango (Front < Next): When physical supplies are abundant, the second-month contract trades at a premium to reflect storage, insurance, and financing costs (Cost of Carry). Long positions suffer a negative roll yield (bleed), while short positions harvest positive roll carry.
• The Unit-Free Roll Signal
For each commodity future i on MCX:
φ_i = Price(Front Month) / Price(Second Month)
When φ_i > 1.0 → Market is in Backwardation (Positive Carry). When φ_i < 1.0 → Market is in Contango (Negative Carry).
Cross-Sectional Dollar-Neutral Portfolio Construction
Rather than taking unhedged directional commodity price bets, the Commodity Roll Yield Strategy constructs a market-neutral cross-sectional portfolio across the Multi Commodity Exchange of India (MCX):
Allocate +50% Gross capital across the top tercile of commodities exhibiting the highest φ values (e.g. Crude Oil or Copper experiencing tight physical inventories). Harvests positive roll yield.
Allocate -50% Gross capital across the bottom tercile of commodities exhibiting the lowest φ values (e.g. Natural Gas or Agri contracts in seasonal glut). Captures short roll carry.
Because the book maintains ∑ w_i = 0 and ∑ |w_i| = 1.0, broad macroeconomic commodity price swings are hedged out, isolating pure term-structure carry yield.
MCX Commodity Universe & Physical Delivery Constraints
In India, commodity futures trade on MCX and NCDEX under strict physical settlement guidelines:
| Commodity | Exchange Ticker | Typical Curve Regime | Settlement Type / Tender Notice |
|---|---|---|---|
| Crude Oil | CRUDEOIL | Frequent sharp backwardation on geopolitical supply shocks | Cash settled against NYMEX WTI settlement |
| Natural Gas | NATGAS | Persistent steep contango due to massive seasonal storage costs | Cash settled against Henry Hub pricing |
| Copper | COPPER | Reflects global industrial demand and LME warehouse stocks | Compulsory physical delivery (5-day tender period) |
| Gold & Silver | GOLD / SILVER | Consistent mild contango (carrying domestic interest + storage costs) | Compulsory physical delivery at designated vaults |
Execution Rule: Roll Prior to Tender Period
On MCX, non-agri and metal contracts transition into a 5-day Tender Period prior to contract expiration, where compulsory physical delivery margins increase dramatically to 50%+. Quantitative systems must execute the monthly calendar roll at least 3 trading days before the tender period begins.
Educational and Research Content Only
This strategy documentation is strictly for quantitative research and educational analysis. Commodity trading involves leverage, margin volatility, and physical delivery rules. It does not constitute investment advice.