By 
Didier Darcet
25 February 2021

US PE Expansion: Game Over!

Some forty years ago, Charles Gave introduced the “Four Quadrants” concept, used by generations of investors to drive asset allocation in global investment portfolios. The concept crosses inflation and growth to cluster four macroeconomic situations: inflationary boom, inflationary bust, disinflationary boom, and disinflationary bust.

Here we revisit the concept with a scientific eye, applied to ecosystems. We focus on the second derivative of economic production or asset prices, i.e. the acceleration or deceleration of growth and inflation, intentionally ignoring the levels of inflation and growth. A new “Four Quadrants” is born, bridging macroeconomy and simple mathematics. It massively amplifies Charles’ discovery decades ago.

What is it telling us? That the US game on equity price-earnings’ expansion is over.


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