Here's Why Costco (COST) is a Strong Growth Stock

Costco is rated Zacks Rank #3 (Hold) with B scores for Growth and VGM, while its current-fiscal-year earnings are projected to rise 13.5% year over year. For fiscal 2026, three analysts raised estimates over the past 60 days, leaving consensus EPS unchanged at $20.42; Costco's average earnings surprise is +1%. The report presents a constructive growth case but contains no material change to consensus estimates or company guidance.

Analysis

This is not a fresh fundamental catalyst: the cited estimate change is immaterial, and the underlying rating remains neutral. COST's valuation is therefore the operative issue—its premium multiple requires continued comparable-sales resilience, renewal strength, and disciplined merchandise margins; modest consensus EPS growth alone does not create room for further rerating over the next 1-3 months.

The more useful read-through is competitive. A consumer trading down into membership retail can favor COST's traffic and private-label mix, but it also raises the bar for WMT and BJ to defend share through price investment. COST is relatively insulated by membership income, whereas BJ's lower scale and narrower geographic concentration make its gross-margin/SG&A leverage more vulnerable if promotional intensity rises.

Contrarian view: COST is often treated as a defensive growth asset, but that defensiveness can fail if discretionary general-merchandise mix softens while food inflation normalizes; ticket growth then decelerates before investors can offset it with margin assumptions. Over a 6-18 month horizon, international warehouse productivity and membership-fee economics remain the structural upside, but those need independently verifiable renewal, traffic, and new-unit data—not third-party style-score signals—to support a larger position.

NNOX has no analytical linkage to Costco's operating outlook; its inclusion appears promotional rather than evidentiary. No position should be inferred from this material.

Key Decisions for Investors

• Maintain COST at benchmark weight over the next 1-3 months; do not add on this signal. Upgrade only if reported comparable sales excluding fuel, renewal rates, and gross-margin progression collectively support EPS revisions of at least 3-5%.
• Monitor a relative-value basket: long COST / short BJ for 3-6 months only if consumer trade-down data improve while BJ increases promotional activity. The thesis is membership-income durability and scale; exit if BJ's comp-sales growth exceeds COST's for two consecutive reported periods or its merchandise margin expands.
• For defensive retail exposure, prefer selective WMT over chasing COST at a premium valuation: WMT has greater digital/advertising and grocery-share optionality, while COST needs sustained execution to justify its multiple. Reassess after each company's next comp-sales and margin update.
• Set a downside risk trigger on COST around any guidance cut driven by non-food discretionary weakness or a material renewal-rate decline; either would challenge the defensive-growth narrative and could produce multiple compression disproportionate to the EPS revision.