Costco Wholesale Corp (COST) — Quality & forensics

As of 2026-08-27 — refreshed nightly. Closelook readings from an investment research diary, not ratings or advice.

The Closelook module scores

49 /100 composite · 7 modules · general weight set

Valuation 41
Quality 41
Growth 53
Balance sheet 61
Cash quality 58
Capital allocation 53
Momentum 42

Scores are computed nightly across the coverage universe and read relative to it — the methodology lives in the company-scoring explainer.

Financial forensics — the academic screens

9.75 Altman Z-Score

Sits in the safe zone (above 2.99). The Z-Score estimates financial-distress risk from five balance-sheet and earnings ratios.

7/9 Piotroski F-Score

Nine binary fundamental-strength checks across profitability, leverage and operating efficiency.

-2.66 Beneish M-Score

Screens reported earnings for statistical manipulation patterns — below the −1.78 manipulation-risk threshold. A screen, not an accusation.

Continue: the COST chart & overview · COST on the tape

FAQ · from the current data · as of 2026-08-27

Quick answers

What is Costco Wholesale Corp's Closelook quality reading?

The composite reads 49/100 across 7 modules, as of 2026-08-27: valuation 41, quality 41, growth 53, balance sheet 61, cash quality 58, capital allocation 53, momentum 42. Closelook scores are research diary readings, not ratings or investment advice.

What is Costco Wholesale Corp's Altman Z-Score?

9.75, which sits in the safe zone (above 2.99) as of 2026-08-27. The Altman Z-Score estimates financial distress risk from five balance-sheet and earnings ratios.

What is Costco Wholesale Corp's Piotroski F-Score?

7 of 9, as of 2026-08-27. The F-Score counts nine binary fundamental-strength signals across profitability, leverage and operating efficiency.

What does Costco Wholesale Corp's Beneish M-Score indicate?

-2.66 — below the −1.78 manipulation-risk threshold, as of 2026-08-27. The M-Score screens reported earnings for statistical manipulation patterns; it is a screen, not an accusation.