Quote from Papa Lazarou:
they used to have a committee on the floor that decided the settlement, but now it's done on volume weighted average.
it's weighted over the last two minutes and includes the floor and screens, though not sure how they account for the pit volume.

Trying not to be a dick here but all the questions you ask can be answered on the exchanges websites.Quote from mizhael:
VWAP during [14:28:00, 14:30:00] NY EST time everyday?
Electronic session, pit session or combined session?
Thanks a lot!
Quote from Speciaul_K:
Trying not to be a dick here but all the questions you ask can be answered on the exchanges websites.
Try the 2nd-5th link in the search results:
http://www.google.com/search?hl=en&...fai=CJN5BHUs5TP6vNpG2zQS0k6T_CwAAAKoEBU_QTX9k
Quote from bone:
Miz:
You have been starting dozens of fresh threads and crowding the forums with simple and naive questions about exchange procedure and market mechanics THAT CAN ALL BE ANSWERED WITH A LITTLE WORK ON YOUR PART. Each electronic trading exchange has all of these issues covered in the details and minutae of their published rules and curculars. You will probably have to go to the site map but it is there.
It was cute at first, but now it is downright annoying.