Learn about our minimum operating system requirements, browser requirements, and display settings for TDAmeritrade.com.
PC: Windows® 7 or later
Macintosh®: macOS® 10.11
With pro grade tools and resources, the thinkorswim trading platform is designed to deliver a holistic, live level II advantage when trading U.S. Stocks and options. A fully customizable trading platform; Free, real-time streaming U.S. Equity and option level I and II data; Trade multi-leg option strategies with up to four legs. I have found that the ThinkOrSwim Platform appears to work better with 768mb max memory allocation. To show the connection bar, press CTRL + ALT + HOME. I’ve noticed before that sometimes TD Ameritrade makes it really hard to find where to download the ThinkOrSwim platform. I'm having a real iPod crisis today and don't need any smart ass.
PC: Microsoft Internet Explorer 11 or later, Microsoft Edge, Mozilla Firefox (latest 2 versions), Chrome (latest 2 versions)
Macintosh®: Safari™ 11 or later, Firefox (latest 2 versions), Chrome (latest 2 versions)
We recommend using the latest browser available with your device such as Safari, Firefox, or Chrome.
You may also download our mobile apps.
This Web site is designed for a minimum resolution of 1024 x 768 and for a color depth of 16K.
If you're using a PC, to change the color depth or resolution, go to Control Panel, select Display, and choose Settings.
If you're using a Macintosh with OS X, go to System Preferences and choose Displays.
This Web site utilizes pop-up windows. If you use a pop-up blocker, you can still trade and access most site features. To view all information on the site, including most forms and look up results for symbols and quotes, you must disable your pop-up blocker.
Visit the Security Center to check your site and browser settings page
Check your browser for pop-up blockers and follow instructions for allowing pop-ups.
This web site requires Adobe Reader 4.0 or later to read PDFs.