The best way is contacting the companies T/A daily to see what the float/OS is. Unfortunately many of the penny stock T/A's won't give that info because of policy or they are being gagged by the company so you just have to watch the trades, L2 to see what MM's are on the ask, certain MM's are known diluters ie: MM VFIN and the stocks movement.
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.