Payment for Order Flow and Trade-At Rule Crucial to Maker-Taker Discussion

Payment for Order Flow and Trade-At Rule Crucial to Maker-Taker Discussion
MMI blog post which reports that high frequency trading is often linked to maker-taker because many high frequency trading strategies rest their orders and at many exchanges it is the resting orders that receive the rebate. However, it is important to know that HFT strategies do not rely on the rebate to be profitable.