SocialSentiment.io

https://socialsentiment.io/
Stamford, CT, USA

In their own words

SocialSentiment.io watches social media to track the sentiment of publicly traded companies. We run custom trained, industry specific machine learning algorithms to monitor what the general public and investors are saying online.

We help inform investors of the positive and negative opinions people hold of a company and its stock. Watching online posts in aggregate can provide insight into how the general public or specific audiences are reacting to a company's products and actions. This sentiment can impact a company's value, making it useful to investors. We graph this sentiment over time to watch for trends as well as notify you of recent shifts in sentiment. We also offer API access to all of our data.