The 2010s have been a boom era for online stock brokers. According to Statista, between 10% and 15% of all U.S. adults used an online broker at least once in 2018. While some major brokerages have remained the same (Charles Schwab), others have gone through mergers and acquisitions (E*TRADE acquired OptionsHouse; TD Ameritrade and Scottrade merged; TradeKing is now Ally Invest), and a new generation of millennial-focused brokers (like Robinhood and Acorns) has kept the old guard on its toes by lowering commission rates and minimum deposits. After digging into 25 trading platforms, here are the factors that set our top picks apart from the crowd.
History has shown that investing in stocks is one of the easiest and most profitable ways to build wealth over the long-term. With a handful of notable exceptions, almost every member of the Forbes 400 list of the wealthiest people got there because they own a large block of shares in a public or private corporation. Although your beginning may be humble, this guide to investing in stocks will explain what stocks are, how you can make money from them, and much more.

Overall commission costs can also be affected by new customer promotions. Brokers may give you a chunk of free trades based on your deposit amount. If your deposit gets you a substantial number of free trades, that can write off otherwise higher per-commission costs. Ally Invest offers small incentives for deposits as low as $500. Fidelity Investments, meanwhile, has a higher barrier for entry — it takes a $50,000 deposit, but then you'll get 300 free trades.


It's crucial to educate yourself before you wade into any type of investment or investment strategy. This beginner's guide to online stock trading will give you a starting point and walk you through several processes: choosing a discount broker, the 12 types of stock trades you can make, how to select individual stocks, uncovering hidden fees, expenses, and commissions, and much more. 
Measure your returns against an appropriate benchmark. This is essential advice for all types of investors — not just active ones. The bottom-line goal for picking stocks is to be ahead of a benchmark index. That could be the Standard & Poor’s 500 index (often used as a proxy for “the market”), the Nasdaq composite index (for those investing primarily in technology stocks) or other smaller indexes that are composed of companies based on size, industry and geography. Measuring results is key, and if a serious investor is unable to outperform the benchmark (something even pro investors struggle to do), then it makes financial sense to invest in a low-cost index mutual fund or ETF — essentially a basket of stocks whose performance closely aligns with that of one of the benchmark indexes.

Books provide a wealth of information and are inexpensive compared to the costs of classes, seminars, and educational DVDs sold across the web. Here on the site we have a full list of 20 great stock trading books for investors to consider. My personal all-time favorite is How to Make Money in Stocks by William O’Neil, founder of CANSLIM Trading which is pictured below.
How much money do I need to start investing in stocks? The amount of money you need to buy an individual stock depends on how expensive the shares are. (Share prices can range from just a few dollars to a few thousand dollars.) If you want mutual funds and have a small budget, an exchange-traded fund (ETF) may be your best bet. Mutual funds often have minimums of $1,000 or more, but ETFs trade like a stock, which means you purchase them for a share price — in some cases, less than $100).
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