BEST OF
11 Best Online Brokers for Stock Trading of May 2021
Want to trade stocks? You’re going to need an online broker, and that broker should offer a reasonable investment minimum, high-quality trading tools, robust access to customer service and no hidden account fees. On these measures, the brokerage firms below earned their place on our list of the best online brokers for stock trading.
We evaluated brokerage firms and investment companies on the services that matter most to different types of investors. For example, for active traders, we've noted online brokers with low or no commissions and robust mobile trading platforms. For people venturing into investing for the first time, we've included the best online brokers for educational resources (including webinars, video tutorials and in-person seminars) and on-call chat or phone support.
Read on to see our picks for the best brokers, alongside links to our investing experts' in-depth reviews on each.
Want to trade stocks? You’re going to need an online broker, and that broker should offer a reasonable investment minimum, high-quality trading tools, robust access to customer service and no hidden account fees. On these measures, the brokerage firms below earned their place on our list of the best online brokers for stock trading.
We evaluated brokerage firms and investment companies on the services that matter most to different types of investors. For example, for active traders, we've noted online brokers with low or no commissions and robust mobile trading platforms. For people venturing into investing for the first time, we've included the best online brokers for educational resources (including webinars, video tutorials and in-person seminars) and on-call chat or phone support.
Read on to see our picks for the best brokers, alongside links to our investing experts' in-depth reviews on each.
Summary of Best Online Brokers for Stock Trading of May 2021
| Broker | NerdWallet Rating | Commissions | Promotion | Account Minimum | Learn More |
|---|---|---|---|---|---|
 TD Ameritrade on TD Ameritrade's website | $0 per trade | None no promotion available at this time | $0 | on TD Ameritrade's website | |
 Webull on Webull's website | $0 | 2 Free Stocks after opening and funding an account. | $0 | on Webull's website | |
 Robinhood on Robinhood's website | $0 per trade | None no promotion available at this time | $0 | on Robinhood's website | |
 Interactive Brokers IBKR Lite on Interactive Brokers's website | $0 per trade | None no promotion available at this time | $0 | on Interactive Brokers's website | |
 TradeStation on TradeStation's website | $0 per trade | Up to $5,000 cash credit with a qualifying deposit | $0 | on TradeStation's website |
on TD Ameritrade's website
TD Ameritrade
Fees
per trade
Account Minimum
Promotion
no promotion available at this time
on TD Ameritrade's website
on Webull's website
Webull
Fees
Account Minimum
Promotion
after opening and funding an account.
on Webull's website
on Robinhood's website
Robinhood
Fees
per trade
Account Minimum
Promotion
no promotion available at this time
on Robinhood's website
on Interactive Brokers's website
Interactive Brokers IBKR Lite
Fees
per trade
Account Minimum
Promotion
no promotion available at this time
on Interactive Brokers's website
on TradeStation's website
TradeStation
Fees
per trade
Account Minimum
Promotion
cash credit with a qualifying deposit
on TradeStation's website
on E*TRADE's website
E*TRADE
Fees
per trade
Account Minimum
Promotion
when you open and fund an E*TRADE account with code: BONUS21
on E*TRADE's website
on Zacks Trade's website
Zacks Trade
Fees
per share
Account Minimum
Promotion
no promotion available at this time
on Zacks Trade's website
Want to compare more options? Here are our other top picks:
Disclosure: The author held no positions in the aforementioned securities at the time of publication.
Last updated on April 30, 2021
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Methodology
NerdWallet’s comprehensive review process evaluates and ranks the largest U.S. brokers and robo-advisors by assets under management, along with emerging industry players, using a multifaceted and iterative approach. Our aim is to provide an independent assessment of providers to help arm you with information to make sound, informed judgements on which ones will best meet your needs.
DATA COLLECTION AND REVIEW PROCESS
We collect data directly from providers, and conduct first-hand testing and observation through provider demonstrations. Our process starts by sending detailed questionnaires to providers to complete. The questionnaires are structured to equally elicit both favorable and unfavorable responses from providers. They are not designed or prepared to produce any predetermined results. The questionnaire answers, combined with product demonstrations, interviews of personnel at the providers and our specialists’ hands-on research, fuel our proprietary assessment process that scores each provider’s performance across more than 20 factors. The final output produces star ratings from poor (one star) to excellent (five stars). Ratings are rounded to the nearest half-star.
RATING FACTORS
Evaluations vary by provider type, but in each case are based upon the weighted averages of factors that include but are not limited to: advisory and account fees, account minimums and types, investment selection, investment expense ratios, trading costs, access to human financial advisors, educational resources and tools, rebalancing and tax minimization options, and customer support including branch access, user-facing technology and mobile platforms.
Each factor can involve evaluating various sub-factors. For instance, when gauging the investment selections offered by robo-advisors, 80% of the score is based on the potential for diversification (how well-diversified a resulting portfolio of investments could be) combined with the availability of specialty portfolios and level of customization for investors. Expense ratios form an additional 10% of the score, and low or no management fee the remaining 10%.
FACTOR WEIGHTINGS
The weighting of each factor is based on our team’s assessment of which features are the most important to consumers and which ones impact the consumer experience in the most meaningful way. The factors considered, and how those factors are weighted, change depending upon the category of providers reviewed.
Provider categories include: Best Brokers for Stock Trading, Best Brokers for Beginners, Best Brokers for Day Trading, Best Brokers for Options Trading, Best Discount Brokers, Best Brokers for Free Trading, Best Investment Apps, Best Brokers for Penny Stocks, Best IRA Brokers, Best Robo-Advisors, Best Financial Advisors, Best Real Estate Platforms, Best Brokers for ETFs and Best Brokers for Mutual Funds.
INFORMATION UPDATES
Writers and editors conduct our broker and robo-advisor reviews on an annual basis but continually make updates throughout the year. We maintain frequent contact with providers and highlight any changes in offerings.
THE REVIEW TEAM
The review team comprises seasoned writers, researchers and editors who cover stocks, bonds, mutual funds, index funds, exchange-traded funds, alternative investments, socially responsible investing, financial advisors, retirement and investment strategy on a daily basis. In addition to NerdWallet, the work of our team members has been published in The New York Times, The Washington Post, Forbes, USA Today, Bloomberg News, Nasdaq, MSN, MarketWatch, Yahoo! Finance and other national and regional media outlets.
The combined expertise of our Investing team is infused into our review process to ensure thoughtful evaluations of provider products and services from the customer perspective. Our writers and editors combine to have more than 70 years of deep experience in finance, ranging from a former Wall Street Journal reporter to a former senior financial advisor at Merrill Lynch.
CONFLICTS OF INTEREST
While NerdWallet does have partnerships with many of the reviewed providers, we manage potential conflicts of interest by maintaining a wall between our content and business operations. This wall is designed to prevent our writers and the review process from being influenced or impacted by our business partnerships. This way, all reviews can provide an unbiased review that serves the interests of our users. For more information, see NerdWallet’s editorial guidelines.
To recap our selections...
NerdWallet's Best Online Brokers for Stock Trading of May 2021
Frequently asked questions
Not much. Note that many of the brokers above have no account minimums for both taxable brokerage accounts and IRAs. Once you open an account, all it takes to get started is enough money to cover the cost of a single share of a stock and the trading commission, if charged. (See “How to Buy Stocks” for step-by-step instructions on placing that first trade.)
Trading costs definitely matter to active and high-volume traders, but many brokers now offer commission-free trades of stocks, ETFs and options. Other factors — access to a range of investments or training tools — may be more valuable than saving a few bucks when you purchase shares.
One easy way is to invest in exchange-traded funds. ETFs are essentially mutual funds that are bought and sold just like individual stocks on a stock market exchange. Like mutual funds, each ETF contains a basket of stocks (sometimes hundreds) that adhere to particular criteria (e.g., shares of companies that are part of a stock market index like the S&P 500). Unlike mutual funds, which can have high investment minimums, investors can purchase as little as one share of an ETF at a time.
Your money is indeed insured, but only against the unlikely event a brokerage firm or investment company goes under. A broker’s SIPC coverage (Securities Investor Protection Corporation) doesn't cover any loss in value of your investments.
Your account choices boil down to a taxable brokerage account versus tax-favored retirement account, such as an IRA. Our guide to brokerage accounts goes into more detail about what’s involved in setting up a taxable account. Opening an IRA involves choosing which type, such as a Roth IRA, traditional IRA or SEP IRA. If you're new to this, we’ve got you covered in our guide to IRAs.
After you’ve opened the account, you’ll need to initiate a deposit or funds transfer to the brokerage firm, which can take anywhere from a few days to a week. Once that is complete, it’s off to the investing races! And by that we mean taking a thoughtful and disciplined approach to investing your money for the long-term.
Some key criteria to consider when evaluating any investment company are how much money you have, what type of assets you intend to buy, your trading style and technical needs, how frequently you plan to transact and how much service you need. Our post about how to choose the best broker for you can help you sort through the features brokerage firms offer and rank your priorities.
