§ 03 / FRAMEWORK
Đông Rùa Theory
An extension of DuPont. We add what financial frameworks miss.
An extension of DuPont. We add what financial frameworks miss.
Profit margin × asset turnover × financial leverage. The classical framework — still the starting point.
But it treats the company as a closed system — it doesn't see the wind outside the window.
Regulatory shifts, platform dependency, consumer behavior changes, AI competition. EF modulates ROE.
Two companies with the same ROE but different EF — their sustainability is very different.
Decision-making team, infrastructure, learning culture, financial buffer. RF is the actual governance layer.
Two companies with the same ROE and EF but different RF — when the storm hits, their fates diverge.
A simplified version for illustration.
Đông Rùa Theory is formalized in a full academic paper. Methodology details shared during engagement.