Fractional Share Trading


Trading fractional shares allows you to invest in companies which you may not be able to afford the full share price. It also makes it easier for you to diversify your portfolio by allowing you to purchase fractional amounts in multiple companies when you otherwise may have only been able to purchase whole shares in one or two companies.

If you enable your account to trade in fractions, we will buy or sell a fraction of a share based on the amount of cash you specify. For example, if you want to spend $500 but one share of the stock you want to buy is currently $1000 you would end up with 0.5 shares.

Who is eligible for fractional share permissions?

All individual, standalone accounts including Lite customers (except those who reside in Israel, Canadian RRSP/TFSA accounts and Interactive Brokers Luxembourg SARL (IBEU) entity accounts) are eligible for fractional share permissions.

Financial Advisors, Money Managers, and Introducing Brokers may enable their clients on an all-or-none basis.

How do I enable fractional shares?

If you are eligible then you can enable fractional share trading in Client Portal/Account Management. Select Settings followed by Account Settings and click on the Configure (gear) icon next to Trading Experience & Permissions. Scroll down to "Stocks", check the box for "United States (Trade in Fractions)", click CONTINUE and follow the prompts on screen.

Please note, TWS Build Version 979 or later is required to trade fractional shares. This feature currently supports most order types.

What products can I trade in fractions?

U.S. stocks listed on NYSE, AMEX, NASDAQ, ARCA, or BATS, as well as OTC Pink U.S. penny stocks with average daily volume above $10 million and market cap above $400 million are available for fractional shares trading. Non-U.S. stocks are not available for fractional shares trading at this time.

A list of stocks that can be traded in fractional shares is available via the following link. Please note, this list is subject to change without notice:

Can I short fractional shares?

IBKR does support short sales in fractional shares of eligible U.S. stocks as long as you have margin and approved trading permissions for "United States (Trade in Fractions)"/"Stocks".

What are the fees associated with fractional shares?

There is no additional fee to use fractional share trading. Standard commission rates (both IBKR Lite and IBKR Pro) apply.

Can I transfer fractional shares to IBKR?

IBKR does not accept fractional shares through a position transfer.

Do I receive dividends on my fractional shares?

Your fractional shares positions are eligible to receive dividends in the same manner as your full positions on the same stocks.

Are fractional shares eligible for the Dividend Reinvestment Program (DRIP)?

It is not possible to receive fractional shares for a reinvested dividend through the Dividend Reinvestment Program (DRIP) at this time. We hope to offer this in the future.

Please note the above does not apply in the event of mutual fund dividends, which can be re-invested and may result in holding fractional shares of the fund.

Will I receive a fractional share position from a corporate action?

If your account has been approved for trading fractions and a US corporate action issues fractional shares, the fractional shares will remain in your account. However, if your account does not have permissions to trade in fractions or the corporate action is issuing non-US shares or non-eligible US shares, the fractional shares will be liquidated.

Is fractional trading available for the API?

Fractional trading is not supported via API or FIX/CTCI at this time.