The Liquidity Equation: The Mathematical Logic of the Endowment Ladder

By N.D. Tan

The Liquidity Equation

Good structure becomes stronger when its logic can be made visible.

The Liquidity Equation explains the mathematical foundation behind the Endowment System. It defines the relationship between Liquidity and the Core, shows how buffer multiples can be used to size protection, and examines how withdrawal pressure weakens long-term capital when current spending and market losses act on the same base at the same time. It also explores smoothing, trimming, sequence risk, and stress testing as parts of a disciplined system rather than isolated ideas.

This book is for readers who want more than intuition. It is for readers who want to understand why the structure works, how much Liquidity may be needed, and what protects compounding from avoidable interruption.

The goal is not merely to hold reserves. The goal is to make time, structure, and long-term capital work together with discipline.

• Format: Paperback
• Language: English
• ISBN: B0GT961JRZ
• ISBN13: 9798252886404
• Release Date: March 2026
• Publisher: Independently Published
• Length: 98 Pages
• Weight: 0.31 lbs.
• Dimensions: 0.2" x 6.0" x 9.0"