Yeah, I custom wrote a lot of the NLP years ago. It was adapted from my Master's thesis predicting box office sales using sentiment analysis on twitter data (and a few other variables like number of theaters it plays in). Back then, nothing out of the box was accurate enough to my liking and I had to custom write a lot of stuff to analyze it and it's pretty web hosting specific for understanding context. I honestly haven't tested much on newest sentiment analysis stuff available. I wonder how accurate it would be. But the biggest problem I am finding is that there is less data on Twitter. Not sure if that's fewer people talking about these companies or just lower Twitter volume in general.