when receiving feeds for XBO symbols, is there a way to tell the original Exchange that sends the bid/ask, or the bid/ask is also XBO composite so Exchange info is not available? We saw quote updates, for example, LRDGBP.xbo, either one entry of:
or entry of the following:
we can't tell if it's from LSE, BATS, CHIX, or Turquoise. Thanks.