Social Media And Investing

Goldman Sachs has taken an interesting way to gauge the valuation of a company and its stock -- buzz on social media. Its analysts used comments to warn on Tesla and its Model 3 sedan.  Here is how they did it:

"Goldman analysts looked to gauge sentiment on the Tesla TSLA, +0.63%  Model 3 by analyzing daily social-media posts and categorizing Twitter and Reddit posts as positive, negative, or neutral. The buzz has skewed negatively recently, they said.
"They found that weekly posts about the Model 3 declined from an average of 3,900 a week last year to an average of 3,000 a week this year; posts with a positive skew have faded, they said."
This is how PR measures public opinion to report back to clients.  There is a caveat to this approach.  It is not statistically accurate because the sample is most likely random but it can provide a broad indication of trends.  Tesla ought to be concerned.