- Jul
- 01
- 2008
- 11:39 AM
More Transparency Ahead of the NYSE Open and Close
- By: Ray Pellecchia
- File Under: NYSE
I shoulda, woulda, coulda posted this earlier, but better late than never. Our new NYSE Order Imbalances product went live before this morning's opening. It increases the amount of information available in advance of the two most critical points of the trading day.
Here's a link to the press release, and a link to the home page for NYSE Oreder Imbalances. Excerpt from the press release:
“The auctions that take place at the open and close of the New York Stock Exchange are unmatched for their liquidity and price discovery. Now we are providing investors with greater visibility into that auction process, helping customers make better-informed decisions and more effectively manage their execution strategies,” said Mark Schaedel, vice president, NYSE Data Products. “We believe the end result will be increased participation in the open and close, which in turn further contributes to market quality.”
NYSE Order Imbalances will include the following information: time (in milliseconds); symbol; side of the imbalance (buy/sell); paired quantity; imbalance quantity; and reference price (last sale).
Opening imbalances will be disseminated every 5 minutes between 8:30-9 a.m.; every minute between 9-9:20 a.m.; and every 15 seconds between 9:20 and the open (or 9:35, whichever comes first). Closing imbalances will be disseminated every 15 seconds between 3:40-3:50 p.m. and every 5 seconds between 3:50 p.m. and the close.
The new NYSE Order Imbalances product will be provided free of charge to NYSE OpenBook customers. It follows the June 20 introduction of NYSE OpenBook Ultra, which provides a low-latency, event-driven look at the NYSE limit-order book as well as rich content and functionality; and the June 24 launch of NYSE Realtime Stock Prices, which enables information providers to offer NYSE prices in real time and free of charge to unlimited public investors.
A lot of good stuff happening on the data front. Hope it serves you well.
Today in NYSE History (NYSE.com):
1 July 1999 -- Bowne & Company Inc. was listed. Founded in 1775, it is the NYSE's oldest listed company.


Comments
Transparency 'R US! We also have real-time prices on nyse.com.
by Danielle Gustafson on July 1, 2008 11:52 AM
Robert Bowne and Alexander Hamilton helped co-found the Bank of New York, now the Bank of New York Mellon. Bowne also hired John Jacob Astor at $2 per week. Eventually, he helped to start Inland Navigation Co. paving the way to building of the Erie Canal.
by Bart Ward on July 1, 2008 4:12 PM
Sorry to hold you to catching a comment on your blog, but can't seem to find your direct email online. I'm having a spot of trouble figuring out whether or not the NYSE itself, and not Arca, has a closing call auction, or whether it's all continuous and simply ends at 4. Thanks in advance for your reply.
by W. Pan on July 7, 2008 11:43 PM
Bart -- Thanks for the history -- good stuff!
W. -- Trading on NYSE is a continuous auction throughout the day, but the opening and the closing truly are call auctions. Specifically regarding the close, the final transaction of the day aggregates all pending marketable orders at that point in time, including all Market on Close and marketable Limit on Close orders. All such orders are aggregated into one, final auction at a single transaction price.
Hope that answers your question. Thanks for writing.
by Ray Pellecchia on July 8, 2008 11:47 AM
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