If you are a CTA and if you use Interactive Brokers (IB) as a FCM and if you place a âblock ordersâ or âbunched ordersâ for all your Client Accounts, how does IB implement âobjective systematic non-preferential price allocation proceduresâ which is required by NFA/CFTC? Just try to understand the details of such procedures implemented by IB. Does IB actually implement such procedure? If not, does a CTA have to implement it? How? Does any one have any idea?