Hi all
I am trying to implement HFT in Limit Order book by Avellaneda & Stoikov (2008) https://www.math.nyu.edu/faculty/avellane/HighFrequencyTrading.pdf
Here authors have also mentioned about symmetric trading strategy where traders place bets at midpoints of ask & bid prices, does that mean optimal offered bid/ask price = (ask+bid)/2 ? If not, how this bets are placed?
It would be great if someone can offer some insight.
Best Regards
maitreyi