"Social media is impacting the way information is being conveyed to investors," Peter Roffman, S&P Dow Jones Indices global head of Innovation and Strategy, said in a statement. "Factor-based indices are a popular strategy for passive investors, so we're excited to work with Twitter to bring this unique tilt to the S&P 500."

https://www.cnet.com/tech/services-and-software/twitter-partners-with-s-p-500-on-stock-index-crowdsourcing-public-opinion/