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Equity Trading in the 21stCentury

Author

Listed:
  • James J. Angel

    (McDonough School of Business, Georgetown University, USA)

  • Lawrence E. Harris

    (Marshall School of Business, University of Southern California, USA)

  • Chester S. Spatt

    (Tepper School of Business, Carnegie Mellon University, USA)

Abstract

The US equity market has changed dramatically in recent years. Increasing automation and the entry of new trading platforms have resulted in intense competition among trading platforms.Despite these changes, traders still face the same challenges as before. They seek to minimize the total cost of trading, including commissions, bid/ask spreads, and market impact. New technologies allow traders to implement traditional strategies more effectively. For example, dark pools and indications of interest are just an updated form of tactics that NYSE (New York Stock Exchange) floor traders used to search for counterparties while minimizing the exposure of their clients' trading interest to prevent front running.Virtually every measurable dimension of US equity market quality has improved. Execution speeds and retail commissions have fallen. Bid-ask spreads have fallen and remain low, although they spiked upward along with volatility during the recent financial crisis. Market depth has increased. Studies of institutional transactions costs find US costs among the lowest in the world. Unlike during the Crash of 1987, the US equity market mechanism handled the increase in trading volume and volatility without disruption. However, our markets lack a market-wide risk management system that would deal with computer-generated chaos in real time, and our regulators should address this."Make or take" pricing, the charging of access fees to market orders that "take" liquidity and paying rebates to limit orders that "make" liquidity, causes distortions that should be corrected. Such charges are not reflected in the quotations used for the measurement of best execution. Direct access by nonbrokers to trading platforms requires appropriate risk management. Front running orders in correlated securities should be banned.

Suggested Citation

  • James J. Angel & Lawrence E. Harris & Chester S. Spatt, 2011. "Equity Trading in the 21stCentury," Quarterly Journal of Finance (QJF), World Scientific Publishing Co. Pte. Ltd., vol. 1(01), pages 1-53.
    • Handle: RePEc:wsi:qjfxxx:v:01:y:2011:i:01:n:s2010139211000067
    DOI: 10.1142/S2010139211000067
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