My guess is that would be more expensive than what the index fund / ETF would cost you even in a worst case scenario. Read my comment where over the last 10 years Vanguard has only deviated by 1%, even after factoring in trading costs. A typical active fund is going to charge .5% per year, minimum, which adds up to 10% over 10 years, assuming a 7% annual return. A more typical 1% expense ratio is going to be 20%. Active management is extremely expensive. But trading yourself, unless you have a million, is going to be expensive, too. IF you wanted to DIY, $5 a trade adds up if you're putting money into multiple stocks every month. $1000 divided into 10 stocks a month is going to be a 5% expense before you even get started.