ConditionalAll instruments
c. 600 BCE / 1973 · Miletus and Chicago

Options

The right, but not the obligation, to transact at a set price. Asymmetry as a product.

The invention

The problem. Wanting exposure to an outcome without being ruined by the opposite one.

Aristotle records Thales paying for the right to use olive presses ahead of a harvest he predicted would be large — the first option in the Western record, purchased to prove philosophers could make money if they cared to. The modern market began in 1973, the same year Black and Scholes published a formula for pricing them.

Olive press equipment

Crowned Buddha

9th century · The Metropolitan Museum of Art · CC0

Where it has failed

Not a list of disasters. A pattern library.

  1. 1987New York

    Portfolio insurance

    Automated hedging strategies sold into a falling market, amplifying a one-day 22% decline.

    When many participants hold the same hedge, executing it simultaneously becomes the crash.

  2. 1998Greenwich

    Long-Term Capital Management

    A fund run by the authors of options theory failed when correlations moved together in a way the models treated as near-impossible.

    Models are calibrated on periods that did not contain the event that breaks them. This is structural, not careless.

  3. 2021United States

    Retail option volumes

    Short-dated option trading by individuals reached record share of volume, with substantial documented losses.

    An instrument designed to transfer risk works equally well for concentrating it, and the packaging rarely says which you are doing.

Where it stands today

You now have the shape. Here is the reading.

Live from public data, pulled at request time. Read it with the failures above in mind — not because a repeat is due, but because knowing the mechanism is what lets you recognise one early.

S&P 500

Stooq

No data returned

Stooq returned no usable observations

Stooq

In your ledger

Rarely held directly, but the volatility priced by this market is the best available public measure of how uncertain the future is thought to be.

See it in the demo

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