Nanex ~ 23-May-2012 ~ OPRA Reset Events around Facebook Open
On May 18, 2012 beginning about a minute before and after each anticipated opening in
Facebook we noticed wholesale quote changes in hundreds of thousands of equity options
contracts. These updates ran alphabetically by symbol, and are easy to see on OPRA message
traffic charts colored by multicast line. This is because symbols are assigned to lines
alphabetically. Wholesale alpha updates will show up as a rainbow using our charting
technique. And we know how much Manoj Narang loves rainbows.
Table of multicast line symbol assignments
25 millisecond interval OPRA multicast traffic showing peak (1 ms) quote rates
for each of the 48 OPRA multicast lines color coded by line number. Each chart shows
about 5 seconds of data.