Analysis updated Sep 24, 2026 — scores and signals refreshed daily.
COSTCO WHOLESALE CORP (COST) stock analysis — updated Sep 24, 2026: Q-Score 59/100 — Buy. AI alpha score, Graham intrinsic value, ML forecast, technicals and insider activity.
Current Q-Score verdict: Buy (59.0) (grade B). 40 signals analyzed (35 differentiated alt-data).
StoQuant's analysis of COSTCO WHOLESALE CORP (COST) is refreshed every trading day. The Q-Score combines discounted cash flow valuation, earnings quality, competitive moat, analyst consensus, ML return forecasts, technical momentum and market sentiment into a single 0–100 composite. Insider transactions from SEC Form 4 filings, the Graham intrinsic value estimate and signal coverage are recomputed as new data arrives, so this page always reflects the latest available information.
COST stock price is tracked daily for technical and fundamental analysis. The data below shows recent trading activity used in trend analysis, momentum calculation, and entry/exit signals.
| Date | High | Low | Close |
|---|---|---|---|
| 2026-05-15 | $1057.50 | $1039.22 | $1048.95 |
| 2026-05-28 | $1012.00 | $994.27 | $995.20 |
| 2026-06-09 | $981.97 | $964.94 | $968.59 |
| 2026-06-22 | $956.23 | $942.53 | $951.35 |
| 2026-07-02 | $952.64 | $924.84 | $951.67 |
| 2026-07-15 | $927.58 | $910.50 | $916.54 |
| 2026-07-27 | $956.61 | $936.66 | $951.58 |
| 2026-08-06 | $966.14 | $941.78 | $949.15 |
| 2026-08-18 | $971.96 | $955.03 | $961.35 |
| 2026-08-28 | $953.73 | $937.11 | $945.47 |
| 2026-09-10 | $912.09 | $899.00 | $902.38 |
| 2026-09-22 | $903.36 | $895.84 | $899.41 |
How COSTCO WHOLESALE CORP stacks up against same-sector peers on market capitalization and alpha scores:
| Ticker | Company | Market Cap | Alpha Score |
|---|---|---|---|
| BUD | Anheuser-Busch InBev SA/NV | $159.8B | — |
| BTI | British American Tobacco p.l.c. | $141.6B | — |
| UL | Unilever PLC | $125.7B | — |
| ABEV | Ambev S.A. | $50.4B | — |
| DEO | Diageo plc | $47.3B | — |
View all Consumer Staples stocks by valuation and signals →
COSTCO WHOLESALE CORP (COST) scores Buy (59.0), and the composite conceals a 65-point disagreement between its dimensions. It is strongest on competitive moat at 97, and weakest on technicals at 34 and earnings quality at 32. A stock can carry competitive moat that high while earnings quality sits at 32; the composite averages that tension away, which is why the breakdown is worth reading before the headline number. See Q-Score methodology for how these dimensions are weighted and combined.
| Dimension | Score |
|---|---|
| competitive moat | 97 |
| social sentiment | 57 |
| analyst consensus | 56 |
| valuation | 47 |
| technicals | 34 |
| earnings quality | 32 |
StoQuant analyzes 40 signals (35 alt-data). Alternative data sources (FDA approvals, GitHub activity, SEC filings, App Store ratings) complement traditional financial metrics.
COSTCO WHOLESALE CORP (COST) ML Forecast — StoQuant's ML model generates a probability estimate for COST's outperformance vs. the S&P 500, with named drivers (e.g., "earnings surprise upcoming", "insider cluster buy", "RSI reversal") and confidence intervals. Updated daily pre-market.
All StoQuant signals are explained in our knowledge base:
Consumer Staples Hub — Top performers and valuation outliers in Consumer Staples
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