Hiring human brokers to make phone calls and sell clients on investing is costly. Because discount brokers avoid this cost, they can pass on the advantage to customers in the form of lower commissions. A simple rule in the financial world is that clients pay the brokers' expenses, so the lower the brokers' expenses, the lower the fees and commissions.

Finally, trading platforms may have specific requirements to qualify for their use. For example, day trading platforms may require that traders have at least $25,000 in equity in their accounts and be approved for margin trading, while options platforms may require approval to trade various types of options before being able to use the trading platform.

Bernard Baruch, known as “The Lone Wolf of Wall Street,” owned his own seat on the New York Stock Exchange by age 30 and became of the country’s best known financiers by 1910. Mr. Baruch, while a master of his profession, had no illusions about the difficulties of successful stock market investing, saying, “The main purpose of the stock market is to make fools of as many men as possible.” According to Ken Little, author of 15 books on investing and personal finance topics, “If you are an individual investor in the stock market, you should know that the system stacks the deck in its favor.”


One of the most common mistakes in stock market investing is trying to time the market. Time the market, or “market timing,” means trying to figure out the best time to get in the market, or invest. It also means the best time to get out of the market, or sell. It’s not easy to be right on both ends. It can be unsettling to experience market volatility, so that’s why it’s important to understand the difference between savings (which are more stable) and investments (which can be more volatile). It’s the time in the market that is more important, not necessarily timing the market.

Define and write down the conditions under which you'll enter a position. "Buy during uptrend" isn't specific enough. Something like this is much more specific and also testable: "Buy when price breaks above the upper trendline of a triangle pattern, where the triangle was preceded by an uptrend (at least one higher swing high and higher swing low before the triangle formed) on the two-minute chart in the first two hours of the trading day."
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.
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Before making your first investment, take the time to learn the basics about the stock market and the individual securities composing the market. There is an old adage: It is not a stock market, but a market of stocks. Unless you are purchasing an exchange traded fund (ETF), your focus will be upon individual securities, rather than the market as a whole. There are few times when every stock moves in the same direction; even when the averages fall by 100 points or more, the securities of some companies will go higher in price.
NerdWallet’s ratings for brokers and robo-advisors are weighted averages of several categories, including investment selection, customer support, account fees, account minimum, trading costs and more. Our survey of brokers and robo-advisors includes the largest U.S. providers by assets under management, plus notable and/or emerging players in the industry. Factors we consider, depending on the category, include advisory fees, branch access, user-facing technology, customer service and mobile features. The stars represent ratings from poor (one star) to excellent (five stars). Ratings are rounded to the nearest half-star.
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