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Published February 25, 2016 | Submitted
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Call Market Experiments: Efficiency and Price Discovery through Multiple Calls and Emergent Newton Adjustments


We study multiple-unit, laboratory experimental call markets in which orders are cleared by a single price at a scheduled "call". The markets are independent trading "days" with two calls each day preceded by continuous and public order flow. Markets approach the competitive equilibrium over time. The price formation dynamics operate through the flow of bids and asks configured as the "jaws" of the order book with contract execution structured by an underlying mathematical principle, the Newton method for solving systems of equations. Thus, both excess demand and its slope play a systematic role in call market price discovery.

Additional Information

We thank Skylar Cook and Megan Cutrofello, and other students in the Caltech experimental economics class who actively participated in this project in the beginning and contributed to the experimental design. We are grateful to Brian Merlob for helping us monitor the experimental sessions and recording the demonstration video. We express our warm thanks to Tim Cason, Stefano DellaVigna, David Eil, Dan Friedman, Ben Gillen, Dan Levin, Tibor Neugebauer, Stefan Palan, Tom Palfrey, Charles Sprenger, Rakesh Vohra, Bill Zame, and participants of the 2014 Santa Barbara Conference on Experimental and Behavioral Economics for useful comments. We acknowledge the financial support of the Caltech EEPS laboratory.

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August 20, 2023
August 20, 2023