How Warren Buffet got around fractional shares he had investors set up private companies and then managed those companies for them for a fee. When one goes to a broker to have shares bought and put in a private company it has to be through an individual Now the way a public company does this is through a company pension plan with there employees and owning a portion of the shares of the private entity and having the advantage of little or no cost being associated with the buying and selling of the shares.
There is many ways around the many rules but one has to think out side the box and know the rules.
Good luck in your trading she is a pirates game but can be won if one under stands how it works now granted the best is to just day trade the stock.
There are many pros who don't want you to know how it works.