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Stock investing is filled with intricate strategies and approaches, yet some of the most successful investors have done little more than stick with the basics. That generally means using funds for the bulk of your portfolio — Warren Buffett has famously said a low-cost S&P 500 index fund is the best investment most Americans can make — and choosing individual stocks only if you believe in the company’s potential for long-term growth.
Finally, the other factor: risk tolerance. The stock market goes up and down, and if you’re prone to panicking when it does the latter, you’re better off investing slightly more conservatively, with a lighter allocation to stocks. Not sure? We have a risk tolerance quiz — and more information about how to make this decision — in our article about what to invest in.

In terms of volume, Interactive Brokers is technically the largest online stock trading platform in the U.S. It also advertises itself as the “lowest cost broker,” and for good reason: It only charges a startlingly low $0.005 per trade on stocks, ETFs, options, bonds, mutual funds, and futures (plus a 7 cent per contract fee for options). Technically, that’s still higher than Robinhood, but Robinhood only offers stocks, ETFs, and options (and as we noted above, Robinhood does skim some money off the top of trades via “payment for order flow”).
If you’re trying your hand at stock trading for the first time, know that focusing on anything but long-term results will expose you to frequent bouts of agita. Most investors are best served by keeping things simple and investing in a diversified mix of low-cost index funds to achieve — and this is key — long-term outperformance. Because, oof… the short-term ups and downs in the market can be brutal.
Not everyone who buys and sells stocks is a stock trader, at least in the nuanced language of investing terms. Most investors fall into one of two camps. Depending on the frequency in which they transact and the strategy driving their actions, they’re either “traders” (think Gordon Gekko in the movie “Wall Street”) or “investors” (as in Warren Buffett).
Thinkorswim, on the other hand, is a powerhouse designed for the advanced. This desktop application regularly racks up awards for its superior tools and features, things any other broker would charge a premium for — research reports, real-time data, charts, technical studies. Also included: customizable workspaces, extensive third-party research, a thriving trader chat room, and a fully functional mobile app.

TD Ameritrade offers two best-in-class platforms, designed for two different types of investors. Both platforms are free to use for any investor with a TD Ameritrade account. The web-based Trade Architect, though often in the shadow of thinkorswim, is streamlined and easy to use. It will appeal to beginning investors or anyone who prefers a simplified educational interface. Its tab-based navigation lets users flip between trading tools and account overview, plus charts, stock screeners, heat maps, and more.


Unlike most online stock trading platforms, Robinhood doesn’t charge a commission fee every time you buy or sell stocks, ETFs, or options. If you’re a high-volume trader, or a beginner without much cash to spare, that makes Robinhood an attractive alternative to the $5 to $7 fees per trade offered by competitors. However, Robinhood does rake in “payment for order flow” by rounding regulatory fees up to the nearest penny and pocketing the difference. “That means if you buy a stock for $100.00, Robinhood earns 2.6 cents from the market maker,” says co-founder and co-CEO Vlad Tenev, whereas “other brokerages earn rebates and charge you a per-trade commission fee.”

TD Ameritrade has been a powerful player in the online stock trading ecosystem for years. The flipside to such robust platforms? Cost. Even though TD Ameritrade lowered its fees in 2017 from $9.99 to $6.95, pretty much every other major discount broker slashed its prices, too. TD Ameritrade remains one of the more expensive options out there, even with more than 100 commission-free ETFs. Though its pricing structure is more expensive than those of some of the other discount brokers, there are many traders who think it's a best-in-class trading platform.
Choose your trading partner wisely. To trade stocks you need a broker, but don’t just fall for any broker. Pick one with the terms and tools that best align with your investing style and experience. A higher priority for active traders will be low commissions and fast order execution for time-sensitive trades (like our picks for best online platforms for active traders/day traders). Investors who are new to trading should look for a broker that can teach them the tools of the trade via educational articles, online tutorials and in-person seminars (see NerdWallet’s round-ups for the best brokers for beginners). Other features to consider are the quality and availability of screening and stock analysis tools, on-the-go alerts, easy order entry and customer service.
A mentor could be a family member, a friend, a past or current professor, co-worker, or any individual that has a fundamental understanding of the stock market. A good mentor is willing to answer questions, provide help, recommend useful resources, and keep spirits up when the market gets tough. All successful investors of the past and present have had mentors during their early days.
Fidelity’s platform wins for user-friendly design, with tools to help take the guesswork out of finding funds and nosing out strategies. Fidelity’s platform lets you explore your options with a slick and intuitive design, complete with color-coded rankings and charts that call out what’s important. You can sort stocks by size, performance, and even criteria like sales growth or profit growth. Want to sort ETFs by the sectors they focus on or their expenses? Done. There’s even a box to check if you want to explore only Fidelity’s commission-free offerings. A few other discount brokers do offer screeners, but none match Fidelity’s depth and usability.
Keep your perspective. Being a successful investor doesn’t require finding the next great breakout stock before everyone else. By the time you hear that XYZ stock is poised for a pop, so have thousands of professional traders and the potential likely has already been priced into the stock. It may be too late to make a quick turnaround profit, but that doesn’t mean you’re too late to the party. Truly great investments continue to deliver shareholder value for years, which is a good argument for treating active investing as a hobby and not a Hail Mary for quick riches.

One drawback of Robinhood’s simplicity is that as of 2019, you can only trade stocks, ETFs, and options on the platform — not bonds, mutual funds, or futures, and you can’t short-sell. But Robinhood is our “Best for Beginners” pick, and most first-time investors will probably want to stick to the basics. If you’re interested in bonds and mutual funds, Ally Invest has the best rates of our top picks. If you want to try futures trading, E*TRADE and Charles Schwab are your best bets.

Seminars can provide valuable insight into the overall market and specific investment types. Most seminars will focus on one specific aspect of the market and how the speaker has found success utilizing their own strategies over the years. Examples include Dan Zanger and Mark Minervini. Not all seminars have be paid for either. Some seminars are provided free which can be a beneficial experience, just be conscious of the sales pitch that will almost always come at the end.


Devote no more than 10% of your portfolio to trading. Even if you find a talent for investing in stocks, allocating more than 10% of your portfolio to individual stocks can expose your savings to too much volatility. Other ground rules to manage risk: Invest only the amount of money you can afford to lose, don’t use money that’s earmarked for near-term, must-pay expenses (like a down payment on a house or car, or tuition money) and ratchet down that 10% if you don’t yet have a healthy emergency fund and at least 10% of your income funneled into a retirement savings account.

There are risks associated with investing in a public offering, including unproven management, and established companies that may have substantial debt. As such, they may not be appropriate for every investor. Customers should read the offering prospectus carefully, and make their own determination of whether an investment in the offering is consistent with their investment objectives, financial situation, and risk tolerance.
Devote no more than 10% of your portfolio to trading. Even if you find a talent for investing in stocks, allocating more than 10% of your portfolio to individual stocks can expose your savings to too much volatility. Other ground rules to manage risk: Invest only the amount of money you can afford to lose, don’t use money that’s earmarked for near-term, must-pay expenses (like a down payment on a house or car, or tuition money) and ratchet down that 10% if you don’t yet have a healthy emergency fund and at least 10% of your income funneled into a retirement savings account.

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.


When it comes to research, Fidelity is in a league of its own. The intellectually curious can dive into research from more than 20 providers, including Recognia, Ned Davis, and McLean Capital Management. Fidelity’s Learning Center featured videos are organized by topic, but they don’t stop after explaining the concept; they also cover how to apply principles to your own Fidelity investments.


If you’re an active, high-volume trader who dabbles in all kinds of assets, Interactive Brokers is a great option, since you can trade just about anything without losing $5 to $7 on every transaction. The platform interface isn’t nearly as user-friendly as Robinhood’s, nor as intuitive as TD Ameritrade’s; however, if you’re the kind of investor who’d benefit the most from Interactive Brokers (i.e., an experienced one), you’ll know your way around a candlestick chart already.
Securities products and services offered by E*TRADE Securities LLC. Member FINRA/SIPC. Investment advisory services offered by E*TRADE Capital Management, LLC, a Registered Investment Adviser. Commodity futures and options on futures products and services offered by E*TRADE Futures LLC, Member NFA. Bank products and services offered by E*TRADE Bank and E*TRADE Savings Bank, both federal savings banks and Members FDIC. Stock plan administration solutions and services offered by E*TRADE Financial Corporate Services, Inc. All separate but affiliated subsidiaries of E*TRADE Financial Corporation.
In addition to attractive pricing, Ally offers a quality platform that gives you access to the entire universe of stocks and ETFs. Where some discount brokers focus on only one kind of trader (for example, options traders or high-net-worth investors), Ally Invest provides an excellent experience for investors of all kinds. A focus on discounted costs can sometimes be a red flag for quality, but Ally truly delivers with sophisticated calculators, profit-loss estimators, and more. Ally also offers a robust research library that incorporates visual slides and interactive media into its market data.
With cutting-edge research tools and mobile apps, online stock trading is perfect for investors who want to strike out on their own with “self-directed trading” instead of paying fees for a managed portfolio. Whether you’re a first-time investor or an expert trader, you need a trading platform that’s user-friendly, trustworthy, and packed with data visualizations. To find the best online stock trading sites of 2019, we analyzed 25 of the most popular platforms and tapped into the expertise of a former day trader, a stock analyst, and a financial commentator with more than two decades of trading experience. In short, there is no single best online stock broker, but each of our top picks has its own strengths for different types of investors. We’ll help you determine the best fit for your investment goals and experience.
If you want to learn more about how to invest in a stock, check out the directory of Investing for Beginners articles I've written, sorted by topic or head over to my blog for more esoteric and advanced topics that aren't particularly appropriate for beginners. Whatever happens, remember that stocks are just one of many types of assets that you can use to build wealth and become financially independent. 
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