insideout Get Pro

15 · Risk limits and the kill switch

Pro

Markets, lesson 15

Risk limits and the kill switch

Checks before every order, and the switch that stops everything.

You can quote, lean, read the book, and weigh fees and speed. This lesson is about what stops a quoting program from doing something very expensive, very fast.

Part 1. Stop it

Below, a program quotes GULL for you, 0.05 either side of a price feed. Start it, and stop it if anything goes wrong.

The kill switchLive

Every order the quoter sent looked sensible on its own. The trouble was its picture of the market, and by the time a person notices that, the money is usually gone.

Part 2. Checks before every order

Keep going with Pro

You've done the first part. Pro opens the rest of this lesson, and every other one.

Still to come
  1. Checks before every order
  2. Worst case, not current case
  3. The kill switch
  4. A worked problem
  5. The same thing, for real

Markets overviewSpotted a mistake? Tell us.