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Quote Competitiveness, 100‐share Quotes, and Decimalization
Author(s) -
Tang Ning,
Shkilko Andriy,
Stone Gregory
Publication year - 2011
Publication title -
financial review
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.621
H-Index - 47
eISSN - 1540-6288
pISSN - 0732-8516
DOI - 10.1111/j.1540-6288.2010.00291.x
Subject(s) - matching (statistics) , economics , financial economics , business , mathematics , statistics
The finance literature documents a significant post‐decimalization decline in intermarket quote competitiveness. We show that this result is due primarily to the decline in 100‐share NBBO‐matching quotes posted by NASDAQ. After decimalization, such quotes decline by more than 90%. At that time, the intermarket trading system (ITS) regards 100‐share quotes as meaningless; these quotes are exempt from the trade‐through rule and are generally ignored by ITS participants. We therefore argue that the major decline in quote competitiveness observed by previous research is largely nominal, and that decimalization had a much lesser impact on quote competitiveness than previously believed.