i am only going on memory,no data, but goldman or jpm bought archipelago,a few years ago, loosely,archipelago started electronic trading/clearing ,so whoever owns it has a minute by minute total of shorts vs longs ratio
i am only going on memory,no data, but goldman or jpm bought archipelago,a few years ago, loosely,archipelago started electronic trading/clearing ,so whoever owns it has a minute by minute total of shorts vs longs ratio