Gold COMEX Futures (GC and MGC): Trading the Yellow Metal

Gold COMEX futures (GC) on the CME Group are the primary global price reference for gold derivatives. The micro version (MGC) provides retail-accessible exposure to the same underlying. For traders worldwide, whether positioning for inflation hedging, monetary regime shifts, currency debasement views, or pure tactical trades, gold futures combine deep liquidity, near-24-hour trading, and a transparent pricing mechanism that anchors the global gold market. This guide covers contract specs, the spot-futures relationship, and how global traders access COMEX gold.

Contract specifications

GC, Gold Futures

• Multiplier: 100 troy ounces per contract
• Quote: USD per troy ounce
• Notional at $2,400/oz: $240,000
• Tick size: $0.10 per ounce = $10 per contract
• Currency: USD
• Trading hours: Sunday 6 PM ET to Friday 5 PM ET (CME Globex), 1-hour daily break.
• Settlement: Physical delivery (most contracts close before delivery; eligible warehouses include CME-approved gold storage).
• Initial margin: ~$11,000-$15,000 (varies with volatility and broker surcharge)

MGC, Micro Gold Futures

• Multiplier: 10 troy ounces per contract
• Notional at $2,400/oz: $24,000
• Tick size: $0.10 per ounce = $1 per contract
• Same trading hours as GC.
• Initial margin: ~$1,100-$1,500

MGC is one-tenth the size of GC, accessible to retail traders. The micro contract has become the default for most non-institutional gold derivatives exposure since its introduction.

What COMEX gold represents

COMEX gold futures price gold for delivery in CME-approved warehouses (typically located in the New York metropolitan area and select global hubs). The contract specification requires .995 fine gold in 100-troy-ounce or 1-kilogram bars meeting specific brand and refiner standards.

While most futures contracts close before delivery, the physical-settlement mechanism anchors the contract price to the actual cost of acquiring deliverable gold. This linkage matters: when paper-physical gold dislocations occur (rare but historically present in 2020 covid disruption), the futures price reflects the actual cost of physical settlement, not just speculative flows.

Spot vs futures: the relationship

London (LBMA) gold trades over-the-counter as spot, the LBMA AM and PM Fix prices, twice-daily benchmarks, are the global reference for spot gold. COMEX futures price slightly above spot to reflect:

• Cost of carry, financing the gold position from spot to delivery date.
• Storage and insurance, small but real.
• Convenience yield, typically negative for gold (i.e., longs implicitly accept some carry cost).

The spot-futures basis tracks closely. Persistent dislocations between LBMA spot and COMEX futures signal physical market stress. See London gold spot vs futures for the full mechanics.

Trading hours and liquidity

COMEX gold trades around the clock during the trading week. The deepest liquidity sits during US session (8:00 AM to 12:00 PM ET, plus US afternoon). London morning hours (3:00-8:00 AM ET) carry strong volume, LBMA fix activity drives substantial flow into futures arbitrage.

For global traders:

• South African traders have full overlap with London gold hours plus US morning session.
• Brazilian traders have afternoon overlap with US gold trading.
• European and UK traders have direct overlap with deepest liquidity windows.
• Asian traders have evening session liquidity, with substantial activity around Shanghai Gold Exchange opening hours.

Trading approaches

Day trading

Gold day trading concentrates around US session, with daily ranges typically $20-$50 per ounce ($2,000-$5,000 per GC contract). Macro releases (US CPI, FOMC decisions, NFP) drive the largest single-event moves. Day-trading margin at specialist brokers can push effective leverage to 20:1+, a level that demands disciplined sizing.

Swing trading

Position trades held days to weeks. Gold responds to:

• Real interest rates (10-year TIPS yield inversely correlated with gold).
• USD strength (inversely correlated).
• Inflation expectations.
• Central bank gold purchases (China, India, Russia, Turkey have been substantial buyers).
• Geopolitical risk premium.
• Equity market volatility (mild positive correlation in stress events).

Hedging inflation exposure

Long gold positions can hedge real-asset portfolios against fiat debasement scenarios. Hedge ratios depend on the portfolio's specific exposures and the trader's view on the gold-inflation relationship.

Cross-product trading

Gold-silver ratio trading (long gold, short silver, or vice versa), see gold silver ratio trading for the practical mechanics. Gold-platinum and gold-copper relative-value trades also recur.

Cost structure

CME exchange fees + broker commission. Interactive Brokers charges approximately $0.85 per side for GC; MGC similar in absolute terms. Specialist futures brokers can offer lower rates for active traders.

Global access

Direct COMEX access through:

• Interactive Brokers, direct CME access.
• Saxo Bank, gold futures on the multi-asset platform.
• AMP Futures, Tradovate, NinjaTrader-affiliated brokers, specialist futures access for international clients (verify jurisdiction availability).
• CFD brokers (IG, CMC Markets, Plus500, Pepperstone, XTB), gold CFDs that mirror futures pricing with different cost mechanics.

For European retail under ESMA, gold futures sit outside the CFD leverage cap regime; full futures leverage available through eligible brokers.

Physical vs paper gold

Gold futures are paper exposure, a contract on physical gold, but not the physical itself. Investors who want true physical gold exposure typically use:

• Allocated bullion accounts (LBMA-approved vaults).
• Gold ETFs backed by physical (GLD, IAU, PHAU, physical-backed structures).
• Coin and bar purchases for retail-scale physical holding.

Each option has different trade-offs in terms of storage cost, liquidity, counterparty risk, and tradability. Gold futures offer the lowest cost per unit of exposure with the highest liquidity, balanced against counterparty risk on the exchange and clearing system.

What drives the gold price

• Real interest rates, the most-watched driver historically.
• USD strength, gold inversely correlated with the dollar.
• Inflation expectations, particularly when realised inflation diverges from expectations.
• Central bank policy and gold reserves, non-Western central bank buying has been a multi-year tailwind.
• Geopolitical risk, gold acts as a tail-risk hedge.
• ETF flows, physical-backed ETF holdings affect spot demand.

Risks specific to gold futures

• Delivery risk, GC is physically delivered. Speculators must close before first notice day.
• Margin escalation in volatile regimes.
• Macro headline risk, FOMC decisions, US CPI prints can produce sharp moves.
• Currency exposure for non-USD accounts, gold futures PnL is in USD.

Related reading

• London gold spot vs futures, the spot-futures arbitrage.
• Gold-silver ratio trading, relative-value play.
• Commodity Derivatives pillar, the full landscape.