Is Costco Stock Set to Rebound Higher in 2026?

Costco reported fiscal Q1 2026 total sales up 8.2% y/y to roughly $66 billion with comparable sales up 6.4% and digitally enabled comps rising 20.5%; adjusted "other international" comps increased 6.8% versus U.S. adjusted comps of 5.9%. Fiscal 2025 sales were about $270 billion (+8.1% y/y) while membership fee income jumped 14% to ~$1.33 billion, driven roughly half by a September price increase and by membership growth (executive members +9.1% to 39.7M; total paid members +5.2% to 81.4M). Despite strong operating momentum, the stock trades at a premium (trailing P/E ~47, forward ~42), creating valuation risk that could prompt a rerating even if fundamentals remain solid; the analyst therefore characterizes shares as between fairly valued and overvalued and is staying on the sidelines.

Analysis

Market structure: Costco’s model is strengthening on margins—membership income up 14% vs comps +6.4%—so high-quality cash flow is the immediate winner (suppliers with scale that feed Costco also benefit from steady volumes). E‑commerce (AMZN) and big-box rivals (WMT, KR, BJ’s) are the obvious challengers; however, Costco’s unit economics and international comp momentum (other international adj. comps +6.8%) sustain pricing power and stock defensiveness in a soft consumer cycle.

Risk assessment: The dominant risk is valuation rerating: a move from P/E 47 to ~30x implies ~35% downside if EPS holds flat, a realistic tail over 6–18 months. Other tails: membership churn from aggressive price hikes (if renewal rates fall >2 ppt y/y), FX swings in international sales, or accelerated Sam’s Club/online promotion intensity. Near term (days) expect volatility around guidance; medium term (quarters) look for membership renewal cadence; long term (years) base growth depends on store openings and international saturation.

Trade implications: Favor defensive, volatility-aware structures—protective collars or put spreads—over naked longs. Relative-value: rotate some exposure into lower multiple, cash-rich retailers (WMT) or AMZN (cheaper growth) for 6–12 month horizons. Cross-asset: a Costco rerate is slightly hawkish for credit spreads in retail names; buy 6–12 month IG protection selectively.

Contrarian angles: The consensus discounts the quality of membership income—half of Q1 fee growth came from a price increase, the other half from member adds (paid exec +9.1% to 39.7M), implying durable EPS lift even if comps moderate. If membership renewals stay stable, EPS can outpace sales growth and justify a higher multi over 2–3 years; downside is therefore more likely to be abrupt (valuation shock) than gradual.

Key Decisions for Investors

• If you hold or plan to initiate COST exposure, establish a modest core position (1–2% portfolio) only on a pullback of ≥20% from current levels or if forward P/E ≤35; otherwise use option hedges to limit drawdown.
• Buy a 9‑month COST put spread to hedge headline risk: buy 1 put ~15% below spot and sell 1 put ~35% below spot (1:1) sized to cover 50–100% of your COST notional exposure; this caps downside for ~3–6% premium outlay and benefits from a rapid rerating.
• Implement a pair trade: long WMT (2% portfolio) vs short COST (2%) for a 6–12 month horizon—WMT offers lower multiple and better margin resilience if COST rerates; rebalance if relative P/E gap narrows to <5x.
• For existing COST longs, consider a 12‑month collar: buy a 20% OTM put and sell a 15% OTM call to lock in ~15–20% downside protection while financing upside forgone; unwind if membership renewal rate on next earnings call falls >2 ppt y/y (monitor within 45 days).