Costco Wholesale Corp (COST) — Quality & forensics

As of 2026-08-06 — 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 39
Quality 40
Growth 55
Balance sheet 62
Cash quality 56
Capital allocation 55
Momentum 40

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

9.73 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 2026-08-06

Quick answers

What is Costco Wholesale Corp's Closelook quality reading?

The composite reads 49/100 across 7 modules, as of 2026-08-06: valuation 39, quality 40, growth 55, balance sheet 62, cash quality 56, capital allocation 55, momentum 40. Closelook scores are research diary readings, not ratings or investment advice.

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

9.73, which sits in the safe zone (above 2.99) as of 2026-08-06. 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 2026-08-06. 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 2026-08-06. The M-Score screens reported earnings for statistical manipulation patterns; it is a screen, not an accusation.