🛢 モジュール2：エネルギーと金属

🌍 The Commodity Universe at a Glance

Five main families, each with its own logic. Energy lives on geopolitics, precious metals on inflation and interest rates, industrial metals on China, agricultural commodities on weather and USDA reports, and livestock on feed costs and disease outbreaks.

⛽ Geopolitics meets seasonality: Oil markets are geopolitical — OPEC, Russia, US shale — and they move the world economy. Natural gas is seasonal: winter drives demand, summer dampens it. Both markets react to news faster than almost any other commodity market.

WTI — US Inland Oil

The delivery point is Cushing, Oklahoma — an inland storage location without direct ocean access. This explains why WTI sometimes diverges significantly from the world market price. The WTI-ブレント spread is a direct indicator of US export capacity and shale oil production.

ブレント — the Global Benchmark

ブレント crude is the international benchmark for crude oil prices: more than two-thirds of globally traded oil is priced directly or indirectly against ブレント. Because ブレント has direct ocean access, it is tightly coupled to the world market — geopolitical events in the Middle East or Africa often move ブレント more strongly than WTI.

天然ガス

The delivery point is Henry Hub, Louisiana — the central pipeline hub for US natural gas. NatGas is the most volatile contract in the energy sector. The EIA 天然ガス Storage Report (Thursdays 10:30 ET) is the most important short-term price driver.

Seasonality

• 天然ガス — winter peak (heating demand): December through February is the heating season. Colder-than-expected temperatures drive gas consumption and push prices higher. Conversely, a mild winter strongly dampens demand.
• Crude Oil — summer driving season: Between Memorial Day (late May) and Labor Day (early September), gasoline demand in the US rises due to increased driving, frequently reflected in higher RBOB ガソリン and crude oil prices.
• 灯油 mirrors the NatGas seasonality: demand rises in winter and falls in summer. The spread between heating oil and crude oil (crack spread) shows the refinery margin for heating oil.

🥇 5,000年のお金：金は人類最古の貨幣準備資産でした。 1971年にニクソンがブレトンウッズ体制の終焉としてドルの最後の金裏付けを断ち切るまで。 それ以来、金は常に根本的にそうであったもの、つまり自由に取引されるコモディティに戻りました: a freely traded commodity whose price is determined by supply and demand. Silver is a hybrid — half investment metal, half industrial commodity. Platinum and palladium are almost pure industrial metals with a small jewellery bonus. All four trade on COMEX/NYMEX (CME Group) and respond to the same macro forces with differing intensity.

Gold Price Drivers

• US real yield (TIPS yield): The single most important correlation for gold. When real yields rise, the opportunity cost of holding non-yielding gold increases — the gold price falls. When real yields fall or turn negative, gold becomes more attractive. This inverse correlation is stable over decades.
• USD Index DXY: Gold is dollar-denominated — a weak dollar makes gold cheaper for international buyers and drives the price higher. A strong dollar pressures gold. In extreme risk-off phases, both can rise simultaneously.
• Central bank purchases: China, Russia, India, and Turkey have been systematically building gold reserves for years as diversification away from the dollar system. This structural demand is price-supportive and largely independent of real yields or sentiment.
• Jewellery demand (India/China festivals): India and China together purchase more than 50% of the world's gold jewellery. India's wedding season (October to December) and Chinese New Year (January/February) generate annually recurring demand peaks.
• Safe-haven flows in crises: Geopolitical escalations, banking crises, or market crashes trigger capital flows into gold. This effect is strong in the short term but is dominated by interest rates and the dollar over the medium term.

Silver Specifics

Silver is not a smaller gold — it is a hybrid market with its own dynamics. Around 50% of silver demand is industrial: solar panels (the largest and fastest-growing use), electronic contacts, medical devices, and batteries. This dual nature makes silver more volatile than gold: in commodity bull markets, silver often outperforms gold (beta ≈ 1.5–2 relative to gold), but in risk-off phases it also falls more sharply.

The gold/silver ratio (GC/SI) is a classic macro indicator. Historically it swings between 40 and 90. A ratio above 90 shows that silver is relatively cheap — historically a buying opportunity for silver.

Platinum / Palladium

Both metals are primarily industrial metals with a jewellery bonus, whose most important application is automotive catalytic converters. Platinum is predominantly used in diesel catalysts (dominant in Europe), palladium in gasoline catalysts (dominant in the US and China). In the long term, the EV transition will reduce structural demand for both. South Africa and Russia together produce around 80% of global supply — geopolitical risk is high.

Festivals & Seasonality

• India — Dhanteras & wedding season (October/November): Dhanteras is the most important gold-buying day in the Hindu calendar. The subsequent wedding season (October to December) further drives jewellery demand.
• China — Chinese New Year (January/February): Gifts, jewellery, and gold coins at the turn of the year traditionally generate elevated demand.
• Western Christmas season (November/December): Jewellery as Christmas gifts drives demand across Western markets. Weaker than the Indian and Chinese festivals, but measurable.
• Silver synchronizes but more weakly: The seasonal patterns transfer to silver with lower intensity — the industrial share of demand buffers the seasonal jewellery effect.

🔩 ドクター・コッパー — 経済の体温計： 経済学者は銅の価格が世界経済の健康状態を非常に確実に予測するため、銅を「ドクター・コッパー」と冗談めかして呼びます。 銅はすべての電力網、すべてのケーブル、すべてのモーターに使われています。 中国が建設ブームを始めたとき from 2000, global copper demand exploded. The price quadrupled within a decade. Since 2020, the EV transition has added a second structural force: an electric vehicle requires 3–4× more copper than an internal combustion vehicle.

Copper Price Drivers

• China's property sector: Housing construction in China accounts for approximately 35% of global copper demand. Periods of weakness such as the Evergrande collapse in 2021 impact the copper price immediately.
• EV transition: An electric vehicle requires 3–4× more copper than an internal combustion vehicle — for batteries, electric motors, and charging cables.
• Power grid expansion, solar, wind: Renewable energy is copper-intensive. Offshore wind farms and solar farms require large quantities of copper per installed megawatt — a long-term demand tailwind independent of the business cycle.
• Chile + Peru + China = >50% of supply: The supply side is geographically concentrated. Mine strikes (e.g., Escondida, the world's largest copper mine) or political instability can massively constrain supply in the short term and push prices higher.

Aluminium / Zinc / Lead / Nickel / Tin

• Aluminium (ALI/LME CA): The "green metal" — light, corrosion-resistant, recyclable. China produces more than 55% of global aluminium; energy is the largest cost factor since smelting is extremely electricity-intensive.
• Zinc (LME ZS): Primarily used as corrosion protection for steel (galvanization) — in cars, bridges, buildings. Zinc prices closely follow the global steel and construction cycle.
• Lead (LME PB): Around 80% of demand is for lead-acid batteries (starter batteries in vehicles). The market is mature and low-growth.
• Nickel (LME NI): Mainly stainless steel production and — increasingly — EV batteries (NMC chemistry). Historic precedent 2022: The LME was forced to suspend nickel trading after Chinese producer Tsingshan triggered a massive short squeeze; the price doubled within hours to over $100,000/ton. The LME retroactively cancelled trades — an unprecedented intervention that cost trust in market integrity.
• Tin (LME SN): Indispensable for solder joints in electronics — every circuit board contains tin. Growing demand from the semiconductor boom and 5G rollout.