FIN310 • Session 10
Theme:

Commodities, Gold & ETFs Deep Dive

history → ETFs → futures → price drivers → real examples → practice. Designed for quick learning.

A) Gold Quick Facts

Units

Troy ounce (oz t). 1 kg ≈ 32.1507 oz t. USD per oz t quotes.

Markets

Spot (LBMA OTC), Futures (COMEX: GC 100 oz, MGC 10 oz), ETFs (GLD, IAU, GLDM).

Why hold?

Inflation & crisis hedge, diversification (low corr to stocks/bonds), USD hedge.

B) History: Gold Standard → Bretton Woods → 1971 Break → Free Float

Pre‑1914: Classical gold standard (currencies fixed to gold).
1933–34 (U.S.): Dollar devaluation; official price set at $35/oz.
1944: Bretton Woods — currencies peg to the USD; USD convertible to gold at $35/oz (official).
1968: Two‑tier market: official transactions at $35; private market floats.
1971: Convertibility suspended ("Nixon shock").
1973→: Free‑floating era; gold trades at market prices; later ETFs democratize access.
Key idea: After 1971, gold’s price reflects real rates, the U.S. dollar, inflation expectations, and risk sentiment.

C) Gold vs GLD (concept) + Real Return

Illustrative classroom data (not market data).

Real Return Calculator

Real return = ((1+nom)/(1+CPI)) − 1 = 3.88%

Higher inflation with the same nominal return ⇒ lower real return.

D) Gold ETFs — Real Examples & Classroom Recommendations

SPDR Gold Shares (GLD)

  • Type: Physically backed grantor trust
  • Expense ratio: ~0.40%
  • Pros: Very liquid, tight spreads, long track record
  • Cons: Higher fee vs. peers; collectible‑style tax treatment may apply (U.S.)

iShares Gold Trust (IAU)

  • Type: Physically backed grantor trust
  • Expense ratio: ~0.25%
  • Pros: Lower fee than GLD; solid liquidity
  • Cons: Slightly wider spreads than GLD in thin hours

SPDR Gold MiniShares (GLDM)

  • Type: Physically backed (lower share price)
  • Expense ratio: ~0.10%
  • Pros: Very low fee; small share price ideal for students
  • Cons: Liquidity smaller than GLD/IAU; may have slightly wider spreads
Instructor guidance (not investment advice): For a long‑term classroom example, a low‑fee physical ETF (e.g., GLDM/IAU) is usually preferred; for intraday trading demos, GLD often executes the cleanest due to depth.
How to use (steps): Choose ticker → set limit order → size position (e.g., 5–10% of portfolio) → rebalance periodically → monitor tracking vs. spot gold.

E) Gold Futures (COMEX) — Pros/Cons & Realistic Examples

Pros & Cons

  • Pros: Efficient leverage; direct exposure; easy to short; near‑24h trading.
  • Cons: Mark‑to‑market (margin calls); contract months & rolls; amplified losses; requires futures permissions.

Contract Specs (common)

  • GC: 100 oz per contract. Tick = $0.10/oz → $10 per tick.
  • MGC: 10 oz per contract (1/10 GC). Scaled P/L.
  • Margin: Initial & maintenance set by the exchange/broker (varies over time).

Interactive Futures P/L

P/L: $25,000 (excludes commissions/fees)

Return on Margin: 277.8%

Risk note: Leverage magnifies both gains and losses. Use small sizes for demos.

Realistic Example #1 — Hedging (Jeweler)

A jeweler holds ~200 oz inventory. To hedge near‑term price drops, they could short 2× GC contracts (≈200 oz). If gold falls $50/oz, futures profits ≈ $10,000 can offset inventory losses.

Realistic Example #2 — Speculating (Student‑size)

Use MGC (10 oz). Long 1 MGC @ $1,980 → sell @ $1,995 ⇒ gain = $15/oz × 10 oz = $150 (ignoring fees). Good for demos with controlled risk.

F) Gold Price Drivers — Interactive Sandbox

Move the sliders (class exercise)

Heuristic Forecast (Toy Model)

Gold prefers lower real yields & a weaker USD; rises with inflation fears, central‑bank buying, geopolitics, and ETF inflows.

Model signal (12m): BullishExpected move: +8.4% (classroom heuristic, not investment advice)

Mnemonic: R‑U‑I‑C‑G‑F → Real yields, USD, Inflation, (central) Banks, Geopolitics, Flows.

G) Explanations (Plain Language)

Real rates (TIPS)

Lower real yields → gold more attractive (opportunity cost falls). Higher real yields tend to pressure gold.

USD strength

Gold is priced in USD; a stronger dollar often weighs on gold (costlier for non‑USD buyers).

Inflation

Expectations matter more than current CPI; credibility of policy influences demand.

Central‑bank buying

Reserve diversification & FX/inflation hedging; strong official demand can support prices on dips.

Jewelry & tech demand

India/China jewelry seasonality; electronics is smaller but steady demand.

Supply & recycling

Mine supply grows slowly; high prices stimulate recycling which may cap spikes.

H) Compare: ETF vs Futures vs Physical

ETF (GLD/IAU/GLDM)Futures (GC/MGC)Physical (coins/bars)
AccessEasy via brokerageFutures permissionsDealer/vault
LeverageNoYes (margin)No
CostsExpense ratio; small spreadCommissions/exchange; financing via marginPremiums; storage/insurance
TrackingSpot gold (net fees)Front‑month futures (roll)Spot (less liquid)
Taxes (U.S.)Often collectible‑like1256 (60/40); variesCollectibles
Use‑caseInvestorsHedgers, tradersStore of value
Tax rules change; students should verify current treatment with a professional.

I) Practice — Short Questions

  1. Under Bretton Woods, why was the USD central? What ended in 1971?
  2. List three reasons gold can rise even if CPI falls YoY.
  3. Compute P/L: Long 2× GC @ 1950; settle 1972. What is $ P/L? Return on $18,000 margin?
  4. GLDM 0.10% ER on $10,000 for 5y (ignore compounding): about how much in fees?
  5. Real yield −1% → +1%, USD +5%, CB buying steady, geopolitics calm. Qualitative signal?