Tagged Questions

1
vote
2answers
96 views

monthly contract volume required for penny increments?

Have the exchanges disclosed their criteria? Does anyone have a best guess based upon observations of volume (however you wish to define it)? Please no qualitative answers.
3
votes
2answers
538 views

How to account for bid/ask spread when backtesting?

I'm backtesting an algorithm for trading nasdaq stocks, and would like to take into account the spread. I am using historical data from yahoo, which contains: open, high, low, close, volume, adj. ...