Market Efficiency Impacts
Market efficiency impacts refer to how the presence of certain trading practices, such as high-frequency trading or arbitrage, affects the ability of the market to reflect all available information in the asset price. Generally, these activities are seen as enhancing efficiency by closing price gaps and providing liquidity.
However, when these practices lead to extreme volatility or systemic instability, they can hinder the market's ability to function as a reliable indicator of value. The impact is measured by how quickly prices adjust to new information and how tight the bid-ask spreads remain during periods of stress.
A highly efficient market is one where transaction costs are low and prices are accurate. The ongoing evolution of market technology continuously shifts the balance between efficiency and potential instability, requiring constant oversight and adaptation.