Disclosure of Order Execution
Monthly Disclosure of Order Execution Statistics

The files below have been compressed in .zip format.
Statistical data for the February 2011, made available by the NYSE pursuant to Rule 605 (previously Rule 11Ac1-5), was republished April 12, 2011 at 5:00PM EST. All non-identifying fields are subject to change for all order types and sizes.
Certain statistical data for the period December 2008 through January 2011, made available by the NYSE pursuant to Rule 605 (previously Rule 11Ac1-5), was republished March 31, 2011 at 5:00PM EST. Corrected data for July 2007 through November 2008 was republished April 4, 2011. The previously published data incorrectly calculated the following fields:
For market orders (Order Type = 11):
(17) The average realized spread for executions of covered orders.
(18) The average effective spread for executions of covered orders.
(19) The number of shares of covered orders executed with price improvement.
(20) For shares executed with price improvement, the share-weighted average amount per share that prices were improved.
(21) For shares executed with price improvement, the share-weighted average period from the time of order receipt to the time of order execution.
(22) The cumulative number of shares of covered orders executed at the quote.
(23) For shares executed at the quote, the share-weighted average period from the time of order receipt to the time of order execution.
(24) The cumulative number of shares of covered orders executed outside the quote.
(25) For shares executed outside the quote, the share-weighted average amount per share that prices were improved.
(26) For shares executed outside the quote, the share-weighted average period from the time of order receipt to the time of order execution.


For marketable limit orders (Order Type = 12), in addition to the above fields, the following additional fields may have been impacted:
(7) The number of covered orders.
(8) The cumulative number of shares of covered orders.
(9) The cumulative number of shares of covered orders cancelled prior to execution.
(10) The cumulative number of shares of covered orders executed at the receiving market center.
(11) The cumulative number of shares of covered orders executed at any other venue.
(12) The cumulative number of shares of covered orders executed from 0 – 9 seconds after the time of order receipt.
(13) The cumulative number of shares of covered orders executed from 10 – 29 seconds after the time of order receipt.
(14) The cumulative number of shares of covered orders executed from 30 – 59 seconds after the time of order receipt.
(15) The cumulative number of shares of covered orders executed from 60 – 29 9 seconds after the time of order receipt.
(16) The cumulative number of shares of covered orders executed from 5 minutes to 30 minutes after the time of order receipt.
For all other order types, the following field may be impacted:
(17) The average realized spread for executions of covered orders.
For affected Rule 605 statistics made available by the NYSE prior to December 2008, NYSE is currently reviewing options for publishing the data and will post updates on this page.
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* Updated August 11, 2010 4PM due to an issue with prior data.
