So the Gordon dividend model teaches that
Price of the stock = Dividend next year / RequiredReturnOrCost of Capital - Expected Growth Rate
If you apply that to the index using a expected SPY Div of $44 and a expected growth rate proxy of NGDP growth of 4% (2% real, 2% inflation for the long-term), you can infer that people use a required return of 6% right now for US equities. That number is what is consistent with a SPX at the level it is right now, roughly (The fair price to pay would 2200)
If Trumponomics brings expected NGDP goes to 5%, where is the new fair value for SPX? That would be 4400. But of course, that's nuts. The required return/cost of capital has to go up because risk free rates are also on the rise. So lets say that rises by 0.5%, the new fair value is 2933 (fair price = 44/0.065-0.05)
Even if the cost of capital rises by 0.75%, leading to only a 0.25% "net" improvement, the SPX fair value is still 2500
With only a 0.125% net improvement (6.85% requiredreturn/cost of capital, 5% NGDP growth). SPX fair value is 2378
Point is, if the tax/infrastructure/regulatory reforms do produce what they intend to produce (improve growth/productivity/make easier to do business), the long-term returns for investors can be huge. So even if they are likely to fail, it can still pay to be on the bull side
A new closing all-time high would be the confirmation that people are starting to expect this all to work
Price of the stock = Dividend next year / RequiredReturnOrCost of Capital - Expected Growth Rate
If you apply that to the index using a expected SPY Div of $44 and a expected growth rate proxy of NGDP growth of 4% (2% real, 2% inflation for the long-term), you can infer that people use a required return of 6% right now for US equities. That number is what is consistent with a SPX at the level it is right now, roughly (The fair price to pay would 2200)
If Trumponomics brings expected NGDP goes to 5%, where is the new fair value for SPX? That would be 4400. But of course, that's nuts. The required return/cost of capital has to go up because risk free rates are also on the rise. So lets say that rises by 0.5%, the new fair value is 2933 (fair price = 44/0.065-0.05)
Even if the cost of capital rises by 0.75%, leading to only a 0.25% "net" improvement, the SPX fair value is still 2500
With only a 0.125% net improvement (6.85% requiredreturn/cost of capital, 5% NGDP growth). SPX fair value is 2378
Point is, if the tax/infrastructure/regulatory reforms do produce what they intend to produce (improve growth/productivity/make easier to do business), the long-term returns for investors can be huge. So even if they are likely to fail, it can still pay to be on the bull side
A new closing all-time high would be the confirmation that people are starting to expect this all to work