Are you sure they don't round up? The minimum bid and ask size is never less than 100. So an offer to sell 5 shares shows up as 100. If 110 shares are on offer, 200 would show and if 20 were sold, 100 would show.
Just a thoought as I had been wondering why I keep seeing 100 shares on the bid and ask side.
Register for free to join our community of investors and share your ideas. You will also get access to streaming quotes, interactive charts, trades, portfolio, live options flow and more tools.