Investors are concerned that US equity market levels are reaching new all-time highs and valuation readings continue to be stretched. Several months ago narrow leadership within US stocks was the reason to justify underexposure to the asset class. Market participation has broadened considerably since the pandemic-caused nadir of 2020 as equity prices have climbed. One measure of greater market participation is the percentage of stocks trading above their long-term trends, depicted as the dotted line in the chart, revealing 89% of the S&P 500 universe trading above their 200-day moving average. While the current level of participation is high, it can persist for prolonged periods as it had over the past decade. The 2010s were a period of slow economic and job growth post-financial crisis, and yet equity prices delivered robust gains during times of high participation, only temporarily interrupted by bouts of Euro-related uncertainty, the US Treasury debt downgrade, and the “Taper Tantrum”. Given the amount of monetary and fiscal support pledged by the Fed and Congress, our sense is that US stock prices could maintain their general upward trend even in the face of more near-term challenges. [chart courtesy Bloomberg LP, © 2021]