Will Costco's trailing P/E ratio compress below 45x at any point before December 31, 2026?

Slight upward revision from the March 5 batch (0.27) on three considerations: (1) 8 months of resolution window provides ample volatility opportunity — even a brief intra-day touch below 45x triggers YES; (2) the bear case operational pillars have continued to soften (healthcare market dropped to 0.10), which paradoxically narrows the bear case to multiple compression alone, making this market the dominant remaining swing factor; (3) at $1009 with TTM EPS ~$19.20, the multiple is now ~52.6x — meaningfully closer to the 45x threshold than at the prior batch. A single 14% drawdown event would clear the threshold; that's within one-standard-deviation move for a megacap consumer staple over 8 months. Macro tail risks (recession, rate spike, narrative reclassification) remain live.

Slight downward revision from March batch (0.27). Q2 EPS growth of 14% has structurally reduced the multiple from ~54x to ~52.6x even as the price has rallied from $980 to $1009. The market has demonstrated willingness to sustain the premium despite near-perfect execution. Without an exogenous catalyst, multiple compression below 45x requires either a price decline of ~16% (very large for a stable compounder absent a fundamental break) or continued EPS growth that brings the multiple down organically. Only ~3 more quarterly EPS prints (Q3, Q4 FY2026, Q1 FY2027) before the December 31, 2026 cut-off. Even with continued ~12% EPS growth, the multiple would compress from 52.6x to ~50.5x — not enough on EPS alone. So the path to YES still requires a meaningful price decline.

Holding near the March 5 batch at 0.28. The price has not meaningfully changed (~$980 → ~$1009, +3%), the multiple has compressed slightly via earnings growth, and the time remaining is now 8 months vs ~10 months at the prior batch. The resolution becomes mechanically slightly less likely as time decays — fewer trading sessions for a tail event to trigger. Offsetting that, narrative concentration risk has increased (with healthcare and renewal pillars softened, multiple compression is the only meaningful bear catalyst left). Net: hold at 0.28.

Slightly below other runs because the market's demonstrated willingness to sustain the multiple post-Q2 (stock flat on perfect execution then drifting upward to $1009 over 7 weeks) is information. The 'compounder' classification appears robust to operational shocks. The path to 45x requires either a macro shock (recession, rate regime change) or a Costco-specific negative catalyst (tariff acceleration, governance event, regulatory action). None are imminent in the visible information set.

Multiple at ~52.6x, threshold 45x. Need 14% multiple compression in 8 months. Possible but not central case. Time decay slightly reduces probability. ~27%.