The Trade-At Rule, Internalization, and Market Quality
Daniel G. Weaver
Rutgers Business School
April 17, 2014
The SEC is considering the imposition of a trade-at rule which requires venues not at the inside to either significantly improve on price or route to a venue that is quoting at the inside. The rule is expected to greatly reduce the internalization of order flow either directly or through dark pools established to allow indirect internalization. This paper finds that internalization (direct and indirect) is associated with wider spreads (quoted, effective, and realized), higher price impact per trade, and increased volatility. I conclude that imposing a trade-at rule on US markets would improve the quality of markets.
Number of Pages in PDF File: 46
Keywords: Trade-at; internalization; market quality; dark pool
JEL Classification: G12, G14, G18working papers series
Date posted: May 25, 2011 ; Last revised: May 8, 2014
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