In one sentence: A rerun of 037 (2015): commodities are interchangeable goods whose prices follow supply and demand and swing hard, which suits traders more than investors.
Key ideas
- Rerun. Danielle introduces it as an August vault episode for readers asking about non-company investments. It is the 2015 conversation summarised in 037; only the extra details are recorded here. [00:00–01:00]
- What's new in this airing. A short plug for Danielle's Instagram, and the "no dumb questions" idea: investing needs you to find the edge of what you don't know. [01:00–06:00]
- Fungible. Orange juice, wheat, gold and oil are interchangeable whoever produced them, so unlike stocks (where the moat matters) price is almost all supply and demand. [09:00–11:00]
- Cotton example. Fear of a poor Egyptian crop pushed cotton from about 85 cents to $2.25 a pound, hurting T-shirt maker Gildan until farmers planted more. [11:00–14:00]
- How futures began. A baker and farmer lock in a price; brokers then pooled buyers and sellers, and the contract itself became a tradable "derivative". Most traders never want the goods. [15:00–30:00]
- Leverage and volatility. Prices can move on rumour, and 10-to-1 leverage magnifies moves, which is why Phil calls it a market for gamblers. [21:00–23:00]
- The China boom and bust. A decade of Chinese building drove demand for iron ore, copper and energy. Miners and shippers expanded, and when building slowed, supply outran demand and prices fell (gold from about $1,800 to $1,000, oil from $150 to $35 at the time). [31:00–38:00]
- Hint for next time. Phil says commodities tend to move against stocks. [38:00]
How it maps to RuleOne
- Nothing in the screen covers commodities directly. Commodity producers appear in /stocks/; the same lesson applies: with no brand, price and cost position are all that matter, so the moat check is hard to pass.
- Supply-and-demand swings are an example of an event source for the Radar step (cotton and Gildan).
Buffett, Munger and Graham links
- Munger on knowing what you don't know: see 001 for the circle-of-competence thread.
- Buffett's view that commodity-type businesses depend on being low-cost producers: see 038 for the follow-up.
Words to know
- Fungible: interchangeable; one unit is as good as another.
- Derivative: a contract whose value comes from an underlying asset.
- Futures contract: an agreement to buy or sell at a fixed price on a future date.
Try this
Look at the stock page (/stock/TICKER/) of a company that depends on a commodity input (a clothing or food maker). Check whether its margins fell when the input price spiked, as Gildan's did.
Check yourself
- Why is a commodity's price mostly about supply and demand?
Answer
It is fungible, so no brand or moat separates one producer's output from another's. - What caused the 2010s commodity crash in this telling?
Answer
China's building boom slowed after producers had expanded, leaving supply well above demand.
Short quotes
"They're fungible… it doesn't matter where it came from." (Phil, ~09:30, auto-transcribed)