Preferred Algos - Part 3, Quote Rates Back to Preferred Algos Contents On average we see the preferred algos running at rates of 1,000-1,500 quotes per second. However, as demonstrated below they can also run at extremely high quote rates (4,000 - 5,000 quotes per second). In the following charts, trades and quotes are plotted sequentially as they occur. As such, no data is lost. Exchange's bid and ask prices are colored according to the legend on the left. When quotes are the NBBO, a red circle is drawn for the Best Ask, and a Green circle for the Best Bid. Click on any chart for a high resolution image. Symbol APA.PR.D APA.PR.D, Chart #1: A sequence of 41,000 quotes in approx. 10 seconds: APA.PR.D, Chart #2: Drilling down to the first 400 quotes of the sequence: Symbol GM.PR.B GM.PR.B, Chart #1: A sequence of over 5,000 quotes in 1 second: GM.PR.B, Chart #2: Drilling down to the first 500 quotes of the sequence: Symbol PUK.PR.A PUK.PR.A, Chart #1: A sequence of over 6,000 quotes in 3 seconds: PUK.PR.A, Chart #2: Drilling down to the first 500 quotes of the sequence: Inquiries: pr@nanex.net Publication Date: 07/12/2011 http://www.nanex.net This report and all material shown on this website is published by Nanex, LLC and may not be reproduced, disseminated, or distributed, in part or in whole, by any means, outside of the recipient's organization without express written authorization from Nanex. It is a violation of federal copyright law to reproduce all or part of this publication or its contents by any means. This material does not constitute a solicitation for the purchase or sale of any securities or investments. The opinions expressed herein are based on publicly available information and are considered reliable. However, Nanex makes NO WARRANTIES OR REPRESENTATIONS OF ANY SORT with respect to this report. Any person using this material does so solely at their own risk and Nanex and/or its employees shall be under no liability whatsoever in any respect thereof.