why can't retail send sub-penny? Citadel does

[Occam]

Just in case any of you haven't seen it already, here is 2012 analysis from Nanex that analyzes the costs of subpenny queue jumping on the part of internalization/payment-for-order-flow wholesaling:

http://www.nanex.net/aqck2/3519.html

 

[autotradingalgos]

Totally agree with i960.... also do not forget that fabulous miscarriage of justice.... Mr Corzine.