Interactive Brokers (IBKR) earns this award due to its wealth of tools for sophisticated investors and its wide pool of assets and markets. The firm makes a point of connecting to as many electronic exchanges as possible. You can trade equities, options, and futures around the world and around the clock. Interactive Brokers’ order execution engine stays on top of changes in market conditions to re-route all or parts of your order to achieve optimal execution, attain price improvement, and maximize any possible rebate. The order routing algorithms seek out a speedy execution and can access hidden institutional order flows (dark pools) to execute large block orders. The wide array of order types include a variety of algorithms as well as conditional orders such as one-cancels-another and one-triggers-another. You can also set up conditional orders based on price, volume, daily P&L, margin cushion, number of shortable shares available, rebate available from the trading venue, and other factors.

Access to current and historic market data – A day trader needs to be notified of market price changes as soon as possible to be able to act before an opportunity is gone or a loss is materialised. Historic data is necessary for technical analysis and backtesting of trading strategies. Not all platforms have a backtesting feature though, so check before you commit to a specific software.
A demo account is a great way for beginners to practice trading and test a broker or trading platform without using real money. A demo account is funded with simulated money, so you can try out the broker’s platform features and get familiar with acting on the markets. A warning though – even the best practice platform can’t replicate the pressures that comes with having real money on the line, but it’s a great way to learn the basics and get started with zero risk.
For online platforms, websites give the user options and availability of the stock he wishes for, across all the platforms available. If he places an order, it gets stored in a database. After the confirmation of the trading account and payments, the order gets forwarded and the user gets his stock, in the form of money, transferred to his trading account.