Market Efficiency

Arbitrage
A financial strategy involving the simultaneous purchase and sale of an asset in different markets to profit from price differences.
Coase Theorem
An exploration of the Coase Theorem, which posits that externalities can be corrected by the market under specific conditions.
Deadweight Loss
A measure of the welfare loss due to market inefficiencies, often resulting from monopolies or government taxation.
Efficient Asset Markets
An economic concept referring to markets where asset prices fully reflect all available information.
Efficient Markets Hypothesis
The theory that where assets are traded in organized markets, prices take account of all available information, making it impossible to predict future price movements.
Pecuniary Externality
An externality that is felt through prices rather than quantities, accompanying phenomena like immigration affecting labor markets.
Private Benefit
The benefit arising to a single individual from an economic activity.
Tiebout hypothesis
An economic hypothesis asserting that economic efficiency is achieved in an economy with local public goods through consumer choice of location.