SIP Operating Committees Welcome Newly Elected Advisory Committee Members tmcnet.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from tmcnet.com Daily Mail and Mail on Sunday newspapers.
On December 14, 2022, the SEC proposed four separate equity market structure rulemakings, each of which, if adopted, will have significant effects on the markets and various industry.
Traders Magazine
By Phil Mackintosh, Chief Economist, Nasdaq
We’ve talked before about how odd lots are increasing and often provide the best quote in stocks. It was the basis for our own proposals on intelligent ticks as well as some of the SEC’s new NMS II rules last year.
It’s mostly the Securities Information Processors (SIPs) that discern between round and odd lots, only including round lot
quotes into the public NBBO. Although, since December 2013, the SIPs have reported all odd lot
. Exchange matching engines usually don’t treat odd lots any differently. Queue priority is unaffected, and odd lots will fill on a spread crossing order, even if that incoming order is a round lot, often giving those incoming orders price improvement.