Contrary to popular belief, earnings growth has a very low correlation with decadal stock returns. The primary driver is the change in the valuation multiple (e.g., P/E ratio expansion or contraction). The correlation between 10-year real returns and 10-year valuation changes is a staggering 0.9, while it is tiny for earnings growth.

Instead of immediately passing tariff costs to consumers, US corporations are initially absorbing the shock. They are mitigating the impact by reducing labor costs and accepting lower profitability, which explains the lag between tariff implementation and broad consumer inflation.

With the S&P 500's Price-to-Earnings ratio near 28 (almost double the historic average) and the Shiller P/E near 40, the stock market is priced for perfection. These high valuation levels have historically only been seen right before major market corrections, suggesting a very thin safety net for investors.

Tariffs are a direct tax paid by the domestic importer, period. This functions as a significant, unacknowledged fiscal tightening by massively increasing the corporate tax bill. This drain on the economy is a primary driver of the current recessionary impulse, contrary to political narratives.

History shows that markets with a CAPE ratio above 30 combined with high-yield credit spreads below 3% precede periods of poor returns. This rare and dangerous combination was previously seen in 2000, 2007, and 2019, suggesting extreme caution is warranted for U.S. equities.

A surge in business technology investment was misinterpreted as an AI-powered economic boom. It more likely reflected companies front-loading purchases of semiconductors and electronics to avoid paying impending 25% tariffs, rather than a fundamental acceleration in AI-related capital expenditure.

The negative economic impact of tariffs was weaker than forecast because key transmission channels failed to materialize. A lack of foreign retaliation, a depreciating dollar that boosted exports, and a surprisingly strong stock market prevented the anticipated tightening of financial conditions.

The market will likely ignore deteriorating fundamentals until a non-economic catalyst forces a repricing. A constitutional crisis, such as the Supreme Court striking down Trump's executive actions on tariffs, could be the event that shatters market sentiment and triggers a sharp correction.

Despite record market highs, the S&P 500's underlying earnings per share (EPS) have not yet recovered to their peak from early 2022. This "narrative violation" points to a hidden earnings recession for large-cap stocks, a fact that has been masked by market enthusiasm and multiple expansion.