Can you buy fractional shares of stock on TD Ameritrade?

As of right now, TD Ameritrade does not offer its clients fractional share purchases.

That said, there has been some speculation that the brokerage firm could soon offer its customers this option since it was acquired by Chares Schwab, which does provide its users with the feature of buying slices of stocks.

For now, new clients will only be able to participate in traditional market mechanisms (long and short stocks, for example).

No, you can not buy fraction shares on TD Ameritrade at the moment. However, since TD Ameritrade has been purchased by Charles Schwabb, there is a chance that TD Ameritrade will be able to purchased in the near future. However, you can purchase partial shares on TD Ameritrade through DRIP. If you reinvest dividends, they will often result in fractional shares.