1999 · SSRN Working Paper
The Intuition Behind Black-Litterman Model Portfolios
What it asks
Black and Litterman's original paper gives the result but leaves most of the intermediate steps to the reader. He and Litterman open the model up piece by piece: where the equilibrium returns come from, how the view matrix shifts the result, what the confidence parameter does. For anyone trying to implement the model, this is usually the reference that actually gets used.
What this paper connects to
Builds on · 1992
Global Portfolio OptimizationUnpacks, step by step, why the model produces the portfolios it does.