Costco momentum is improving heading into November, says Katie Stockton

Costco’s technical momentum is improving within a nearly two-year trading range: the stock recently broke above its 200-day moving average, which now serves as initial support, and weekly MACD has turned positive. The next resistance is near the 2025 high of $1,078, while monthly stochastics have room to move further toward overbought territory. November has been Costco’s strongest month historically; it gained more than 7% in five of the past six Novembers and has not recorded a November decline since 2008.

Analysis

This is a momentum/seasonality signal, not evidence of improving Costco fundamentals. If flows follow the technical setup, the likely near-term effect is incremental buying in a perceived defensive, high-quality retailer; that can support COST relative to higher-beta consumer names without implying stronger category demand or a durable earnings revision. The counterweight is valuation sensitivity: a momentum-led extension can unwind quickly if rates rise, the broader market de-risks, or Costco’s operating indicators fail to validate investor confidence.

The chart levels in the source require a timestamp check before use: its cited 2025 high is historical as of October 2026, and the article supplies no current quote or updated moving average. Likewise, November seasonality is a small historical sample, not a repeatable catalyst; treating it as a standalone edge risks buying a crowded calendar trade. Over the next 1–3 months, verify the live trend against current support and resistance, monthly sales/traffic, and membership renewal commentary. Over 6–18 months, the key issue is whether operating performance can sustain the premium investors assign to Costco—not whether a technical breakout persists. A failure to hold current 200-day support, or weakening comparable-sales/traffic trends, would falsify the momentum thesis.

Key Decisions for Investors

• No immediate trade on this source alone: first refresh COST’s current price, 200-day average, and all-time/52-week resistance; the referenced 2025 high is not a reliable forward level in 2026.
• Conditional long: consider initiating only after a confirmed close above current, verified resistance, or on a pullback that holds the updated 200-day average. Define risk below that support and reassess if Costco’s comparable-sales or traffic data weaken; do not use the article’s stale levels.
• Treat November seasonality as a timing overlay, not the thesis. Avoid chasing an opening gap or sharp run-up; the reported historical pattern does not establish a dependable forward return or favorable risk/reward.
• Relative-value watch: compare COST with Walmart and a broad retail proxy such as XRT. Only consider a COST-versus-retail pair if updated relative-strength data confirm the leadership implied by the article; no such comparative evidence is supplied.