This calculator is useless and nobody should be using it as a proxy of fair value. Do some real diligence, build a model, don't throw every company into the same ridiculous high level fair value proxy calculator utilizing the same book value and P/E multiples.
I highly recommend focusing on determining accurate cash flow and EPS numbers vs. utilizing the non-sense that is reported or found on Yahoo Finance. Also, downward earnings revisions have just started which means there is a long way to go before earnings and equities bottom out.
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