Best Online Broker for Stock Trading Platform and Research

How we picked the companies to evaluate:

NerdWallet reviewed 17 online brokerages that offer self-directed accounts. These brokerages constitute the majority of that market based on their assets under management. Some of the providers are NerdWallet partners, but this did not influence our selection of the winner.

How we chose the winner:

NerdWallet evaluated each provider across the weighted criteria below to determine the winner for platform and research:

  • Trading platform: ease of use, availability and included tools (40%).
  • Consumer access to research and data (e.g., third-party analyst reports, company financial data) (40%).
  • Mobile app ratings in the Apple and Google Play app stores (10%).
  • Tradable securities available (10%).

How we verified our data:

NerdWallet writers sent detailed questions to all reviewed companies. NerdWallet writers and editors also confirmed fees, rates, policies and other key features on each company's website.