I'm banking on sideways chop for 2019, so answer B. Where are you getting 9% as the discount rate from?
dime
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Great question, I've found 9% seems to be often used for DCF 'fair value' models.
DCF analysis requires a discount rate that accounts for the time value of money (risk-free rate) plus a return on the risk investors are taking.
A fair discount rate could then follow the 30 year treasury yield of 3% as the current 'risk free rate, and 6% as the extra 'risk premium' on equities.
Alternatively, the 20 year average forward PE of 15.88 when inverted is an earnings yield of 6.3% which when added to the 10 year Treasury 'risk free rate' of 2.78 is approximately 9%.
Additionally the long run inflation-adjusted average annualized return on the S&P500 is approx 9%. A reasonable expected rate of return.