S&P 500 earnings overstated by $854B due to depreciation schedules
Summary
The S&P 500 is experiencing inflated earnings reported at a forward multiple of 18.8X and a trailing multiple of 26.15X, both significantly above historical averages. This overstatement is largely attributed to the timing differences in recognizing earnings and expenses related to AI capital expenditures, where full earnings are reported in the initial purchase year while only a fraction of the related expenses are reflected in the income statements due to lengthened depreciation schedules recently adopted by several major technology firms. Specifically, while an estimated $1.04 trillion will be spent on chips and memory in 2027, only about $190 billion will be expensed in that year, resulting in a substantial $854 billion discrepancy that could push the true earnings multiple to 24.8X, suggesting the S&P 500 might be entering bubble territory as future earnings are likely to appear weaker when expenses normalize.