Flagship explainer

What drives PTC Therapeutics, 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 equity−105%Tax burden98%net income ÷ pretax incomeInterest burden80%pretax ÷ operating incomeOperating margin50%operating income ÷ revenueAsset turnover0.75×revenue ÷ average assetsEquity multiplier-3.53×average assets ÷ average equityAs of 2025-12-31 · 1 SEC filing sourceBuy Like Buffett · buylikebuffett.com
DuPont source inputs
InputValueFiscal yearSource
$683MFY2025
Income before tax$697MFY2025
Operating income$867MFY2025
$1.7BFY2025
Ending assets$2.9BFY2025
Beginning assets$1.7BFY2024
−$205MFY2025
−$1.1BFY2024
Source: · event Dec 31, 2025 · retrieved Oct 16, 2026 · annual-row source set
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