Home Help Center Stocks & ETFs Can I buy or sell a fraction of a stock? Can I buy or sell a fraction of a stock? Yes, you can. A fractional share is a part of one share of stock. Note, our minimum investment amount for US users on any stock is currently $10. Trending Articles What is pattern day trading? Why can’t I make a stock trade? Why was my trade rejected? Does TBanque charge me commissions or other fees on stock trades? How do I buy stock? Will I get a tax statement for my stock trading activity? What are market hours? What is a fractional share?