To satisfy a curiosity of whether the NYSE public quote delay was unique to May 6, 2010, we ran another quote-by-quote comparison of time-stamps from the public quote and Open Book for a 30 minute trading period in General Electric stock (GE) on July 21, 2010 (see chart 2). We chose this period because there was a noticeable lag in the public quote from the NYSE versus quotes from other exchanges, allowing us to rule out the consolidation process as a source of the delay. Once again, we detected sizable delays between time-stamps in the public quote and Open Book. These delays ranged in the hundreds of milliseconds. Though the delay magnitude was far lower than the tens of seconds discovered during the flash crash, it was still hundreds of times higher than expected. Our first attempt at finding a cause for the delay involved comparing the trading activity in GE stock with the magnitude of the delay. Chart 2 shows the price of GE stock in red, along with the public quote delay in blue. The left price scale shows the delay in milliseconds (thousandths of a second) and corresponds to the blue vertical lines (note: there shouldn't be ANY blue vertical lines or they should be barely visible at this scale).