I use the Simply Wall Street use the Discounted Cash Flows method for Fair Value calculation. Are they reliable?
Some would say yes, some would say no. And they'd be right, I think it depends on what you believe. If you think "only accounting matters", then you'd rely on DCF for fair value. I think stocks get a value put on them that is a reflection of what society wants, e.g. Netflix has a high value because society has become/wants to become "entertainment on demand", and Netflix is leading that wave.