Goldman says S&P 500 is undervalued b/c of AI boom. Using a dividend discount model & economists’ assumption that widespread AI adoption could boost productivity growth by 1.5pp per year over 10y period, Goldman estimates that S&P 500 CAGR EPS over the next 20yrs would be 5.4%, compared w/+4.9% that model currently assumes, & would support an S&P 500 fair value 9% above today.