Module 1 · The Auction
Markets Are Auctions
A continuous two-way negotiation between buyers and sellers.
In this lesson you'll
- Understand the market as a continuous two-way auction
- See how price advertises and value forms
- Know the lineage: Steidlmayer & Dalton
Auction Market Theory (AMT) was developed by J. Peter Steidlmayer at the CBOT in the 1980s and extended by Jim Dalton in Mind Over Markets and Markets in Profile. Its premise is simple and powerful: a market is a continuous two-way auction with two jobs — to facilitate trade and to discover fair value.
Buyers bid price up looking for willing sellers; sellers offer price down looking for willing buyers. Price is constantly advertising opportunity — probing higher and lower to see where trade is actually facilitated. The negotiation never stops.
Key takeaways
- A market is a continuous two-way auction that facilitates trade and discovers value.
- Buyers bid up to find sellers; sellers offer down to find buyers.
- Price advertises opportunity; the auction probes for where trade is facilitated.
- AMT comes from Steidlmayer (CBOT) and was extended by Jim Dalton.
Check your understanding
Pick an answer to reveal instant feedback. Answer every question to complete the lesson.
Why that's off: Direction is an outcome, not the market's 'job'.
Why that's off: Trapped traders are a behavioral side-effect, not the auction's purpose.
Why that's off: Volume measures success of advertised opportunity; it's not the goal itself.
AMT says the auction exists to facilitate trade between buyers and sellers and to discover fair value through price. Everything else follows from this.
Why that's off: It's normal auction behavior, not a malfunction.
Why that's off: A probe that returns is informative but not a guaranteed reversal.
Why that's off: It's the central mechanism of price discovery.
Probing higher advertises opportunity; if higher prices don't facilitate trade (no acceptance), the auction returns. This away/return behavior is the core of AMT.
Educational content only. Nothing here is financial or trading advice. Order-flow and options patterns shift probabilities; they never guarantee outcomes.