You know, when I was trading, one random client account got a favorable trade execution. Everything was just numbers and letters to me including account numbers, I never knew any of the retail clients, never met them, never talked to them, so it was truly random. I just picked one, lol don't tell my former COO as she would chew me out.
I traded during fraction days, but if MSFT was quoting 28 1/4 x 28 7/16 and if I could get the stock at a 1/4, I would give it to the client at 1/4 not 7/16.
I guess with today's Buy/Sell tool, the buy would show up as a sell. I did quite a few trades between we traders in the middle, how does that show up on this new tool as daily we held positions over night and usually flattened out the next day or at least by Friday since the trade is between two member firms?
What about the trades that did not compare, such as the above mentioned trade, what if I bot 100 shares and the seller sold 1,000 shares, one of us is either selling 900 shares or buying 900 shares, how does that show up, especially in a moving market?
That is why that tool is totally useless.