The Human Action Podcast Banning Congress, Not Markets: The Insider Trading Dilemma
Mar 3, 2026
A discussion sparked by a call to ban congressional trading examines whether insider trading and speculation can help markets by transmitting information. Examples include how speculators anticipate supply shocks, the role of futures and inventories in smoothing volatility, and why wartime windfall taxes and criminalization might backfire. The argument also considers special rules for government employees.
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Speculation Pulls Future Risks Into Today's Prices
- Speculation channels dispersed knowledge into present prices and incentives.
- Bob Murphy uses an oil/war example where traders push spot prices up, prompting conservation, extra production, and inventory buildup before a supply shock.
Market Prices Are The Backbone Of Economic Calculation
- Accurate market prices enable entrepreneurial economic calculation.
- Murphy draws on Mises to show prices for means of production guide resource use and prevent misallocation like using gold in apartment construction.
Profitable Speculation Lowers Market Volatility
- Successful speculators reduce price errors and volatility by buying undervalued assets and shorting overvalued ones.
- Murphy explains this dynamic for stocks and derivatives, noting sophisticated contracts let traders calibrate precise probability views.
