The S&P 500’s estimated bottom-up operating EPS was flat during the second month of Q3 results (Chart 1). With reporting essentially complete, the final Q3 figure will be roughly 1.5% below what was ultimately projected before the quarter’s announcements began. That’s a decent divergence from Q1 and Q2, which came in at 0.7% and 0.3% ahead of their respective “pre-reporting” estimates. The shrinkage in Q3 EPS is more in tune with long-term trends but also marks the end of a nice window of higher results—which is a rarity. Traditional EPS erosion is also evident in the snail trail for the anticipated outcome in Q4 .