Windows 2000/XP or higher
Internet Explorer versions 7.X and higher
FireFox 3.X and higher
(see "Required Browsers, Media Players and Plug-ins" below to download updated versions)
Please note that although many previous versions of Windows and other operating systems and browsers may work on the majority of the site, the above versions are those which were tested. Select areas of CBOE.com contain more complex code however, which may cause non-supported operating systems and browsers to fail while performing certain functions.
CBOE.com does not currently support Safari or Chrome, but you will find that recent versions of these browsers will function properly on the majority of the site. We will continue to review usage statistics of other browsers in order to determine which to support in the future. If you are not currently using a supported browser, feel free to visit one of the supported browser links below in order to download and install a supported version.*