Flagship explainer

What drives Quest Diagnostics Inc’s return on equity?

ROE is five filed business factors multiplied together.

DuPont return on equity factor treeReturn on equity branches into tax burden, interest burden, operating margin, asset turnover, and the equity multiplier.Return on equity14%Tax burden75%net income ÷ pretax incomeInterest burden85%pretax ÷ operating incomeOperating margin14%operating income ÷ revenueAsset turnover0.68×revenue ÷ average assetsEquity multiplier2.32×average assets ÷ average equityAs of 2025-12-31 · 2 SEC filing sourcesBuy Like Buffett · buylikebuffett.com
DuPont source inputs
InputValueFiscal yearSource
$992MFY2025
Income before tax$1.3BFY2025
Operating income$1.6BFY2025
$11.0BFY2025
Ending assets$16.2BFY2025
Beginning assets$16.2BFY2024
$7.2BFY2025
$6.8BFY2024
Source: · event Dec 31, 2025 · retrieved Jul 26, 2026 · annual-row source set
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