What is fractional trading？
You can place orders by at least .00001 shares. You can also place an order by a notional dollar amount. For example, if you wish to spend $500 but one share of the stock you want to buy is currently $1000, you would buy a total of 0.5 shares.
A list of stocks that can be traded in fractional shares is available via this link. Please note, this list is subject to change without notice.