This is not investment advice. The information provided is for educational and informational purposes only and does not constitute a recommendation to buy or sell any financial product.
Basket trading is the simultaneous execution of a group of stock orders as a single trading action. The basket can include buy orders, sell orders, or a combination of both, and the platform executes the orders at the best available prices. The use case is most common among portfolio managers, ETF traders, and traders who use systematic strategies.
Not all trading platforms support basket trading, and those that do support it in different ways. Some platforms have a dedicated basket trading interface, some support it through the API only, and some offer it only for accounts above a certain size or fee level.
What basket trading actually is
A basket order is an order that consists of multiple stock orders that the platform executes as a group. The basket can be defined by the trader before the market opens, and the platform executes the trades when the market opens (for a market order) or at the trader's specified time (for a limit order).
The advantage of basket trading over placing each order individually is speed and consistency. The trader can define a basket of 20 stocks, 30 stocks, or 50 stocks, and the platform executes all of them in a matter of seconds. The basket execution is more consistent than placing each order individually, and the consistency matters for a trader who is following a systematic rebalancing or a strategy that requires a simultaneous entry.
The disadvantage is that the basket execution may produce a different average price than the individual orders, because the platform executes the basket in a sequence and the price may move during the execution. The difference is usually small for a standard basket and larger for a basket of high-volatility stocks.
Which platforms support basket trading
Most professional-grade platforms support basket trading. The category includes Interactive Brokers (with its basket trading interface and the IB API), TradeStation, NinjaTrader, Tradovate, and some of the larger discount brokers (Schwab's StreetSmart Edge, Fidelity's Active Trader Pro, and ETRADE's Power ETRADE). The platforms usually require an active trader account or a higher minimum deposit to access the basket interface.
The retail-grade platforms (the mobile-oriented discount brokers with zero commission) do not usually support basket trading. The platforms are designed for occasional traders who place a small number of orders, and the basket interface is not a priority for the platform's user base. The trader who needs basket trading on a retail platform usually needs to use the platform's API.
The platforms that support basket trading also support the full range of order types (market, limit, stop, trailing stop), and the trader can define the basket with the order type and the size for each stock.
The related concept: fractional share baskets
Some platforms support fractional share baskets, which allow the trader to allocate a dollar amount to each stock in the basket rather than specifying the number of shares. The platform converts the dollar amount to a fractional share at the execution price, and the trader ends up with a portfolio that is weighted by the dollar allocation rather than by the share count.
Fractional share baskets are most useful for traders who want to implement a systematic strategy (dividend reinvestment, sector allocation, risk-parity) or for traders who have a small account and want to buy a diversified portfolio of stocks. The platforms that support fractional share baskets include Robinhood, M1 Finance, and Fidelity's fractional share program.
The cost of basket trading
The cost of basket trading is the sum of the commissions on the individual orders in the basket, plus any premium the platform charges for the basket functionality. Most platforms charge the standard commission per order, and the basket does not reduce the cost per trade. A basket of 20 stocks with a $5 per-trade commission costs $100 in commissions, and the cost is the same whether the trades are placed individually or through the basket mechanism.
The cost is also a function of the spread on each stock. A basket of 20 liquid stocks (S&P 500 components) has a tight spread on each stock, and the execution cost is small. A basket of 20 illiquid stocks (small caps, micro caps) has a wider spread on each stock, and the execution cost is larger. The trader should consider the spread, not just the commission, when evaluating the cost of a basket trade.
Common questions about basket trading
Is basket trading the same as ETF trading? No. An ETF is a product that tracks a basket of stocks; the trader buys one share of the ETF and gets exposure to the basket. Basket trading means buying the individual stocks of the basket as separate orders. The ETF is cheaper for a one-time purchase; basket trading is cheaper for a rebalancing where the trader already holds some positions.
Can I create a basket of stocks based on a theme? Yes, most basket trading platforms allow the trader to define a custom basket based on any theme (green energy, AI, crypto-related stocks, dividend aristocrats). The trader selects the stocks, defines the weight, and the platform executes the basket.
What is the minimum basket size? The minimum depends on the platform. Some platforms require a minimum of 5 stocks, some 10, and some have no minimum. The trader should check the platform's basket trading rules before building the basket.
Related resources
Where to start
If you are evaluating basket trading, the most useful first step is to check whether your broker supports basket orders, the minimum account size for the basket interface, and the commission schedule. Our broker comparison lists the available order types and the platform features at each broker, which together tell you what the basket capability looks like before you organise your portfolio.