Bad reason to lower it. ;)
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(BTW, there are obviously stocks which appear to be (somewhat?) cheap at 15% discount rate even now. They are the stocks of companies in doghouse. E.g. AGCO/DE/CF in agri, Buffett's IBM, some oil stocks - HAL maybe. Of course, the issue is that these companies are encountering headwinds, so it's tough to give them a growth rate that would make them cheap at 15% discount. But if you have some insight that crowd misses, then perhaps some of these might be worth it. Alternatively, there might be international and small/micro-cap stocks that are cheap at 15% discount rate ;). Good luck! )
Thanks for reminder - not to lower my standards but rather have patience and let the market come to me. This market requires a lot of patience.
I do want to have a discount rate that responds to inflation and prevailing bond yields so that I'm not missing opportunities and the equation will help me there. I've read a Buffett quote (couldn't find the reference) that he'll move his hurdle rate up as inflation/yields move up, but the opposite is not true - he has a minimum floor he won't go below. I'd especially like to know that floor rate.
(been shareholder of CF for past few years it's been a great company)