I have an intraday strategy that is sensitive to slippage. What is the best algo/route to minimize slippage against NBBO mid price at the time of placing the order? I am OK with filling the order passively and slowly. The daily turnover of the stocks I am interested is $100M+ but not extremely liquid.
You could split the order into multiple orders, each with different price offers, and so effectively applying averaging down... to finally get/catch the MP, or maybe even better... ie. reducing slippage.
This is going to vary from symbol to symbol and day to day. I would start with trying TWAP and VWAP orders. I would also try a Mid-point peg order to NSDQ or ARCA and the same to a dark pool. Then examine the data to see what works best and has the lowest market impact.
Yes, for example half of the qty x amount below the MP and the other half x amount above, resulting in MP when both get filled. Of course will take longer, and in the meantime the previous MP will have moved...