I saw Interactive Brokers' WebTrader and I got the feeling of insufficiency since it does only allow you to manage your portfolio from the technical point of view, meaning that you can place limit-buy, limit-sell orders, order deferrals, etc. and it's nothing new, but it doesn't give you the ability to build your own logic of investment automatically. On WebTrader platform you can trade shares only after having manually suffered from reconstructing the portfolio realizing good/bad news released, share price movements, correlations changed, etc. But what if you had that logic already implemented into the software doing all those work on behalf of you? Like for example I always construct (and rebalance) a portfolio investment logic according to the XYZ theory. Having automated this theory saves you time and computational hell everytime you need to buy/sell shares if the outcome of your hand-calculating is to be the same.