It depends on you use LIWC or not. But I think it will use TAGs and python to analyze the regression between sentiment score and stock price. (the procedure is uploaded, you don’t need to type python, there is a script, just input some number and change the file name)
If you have any questions about downloading LIWC, please let me know. This is the link for LIWC Text Analysis Tutorial: https://www.youtube.com/watch?
You can find the company financial performance from Morningstar.com or other websites you prefer