On the Market Portfolio for Multi-Asset Classes

19 Pages Posted: 23 May 2012

See all articles by Rodolphe Louis

Rodolphe Louis

ENSAE

Thierry Roncalli

Amundi Asset Management; University of Evry

Date Written: April 25, 2012

Abstract

The influence of the CAPM theory on the financial theory of investment has increased with the development of passive management. Today, equity or fixed-income market portfolios can easily be defined using equity and fixed-income indexes. These indexes also play an important role in active management as they serve as benchmarks. The case of multi-asset classes is more complex. Indeed, indexes taking into account both stocks and bonds do not exist today. However, most investors need such references as their principal problem is to define their stock/bond asset mix policy. It is especially true for institutional investors like pension funds and long-term investors. In this article, we show how to compute the market portfolio of equity and fixed-income instruments. We then analyse the specificity of such a portfolio according to countries or regions and how this portfolio has changed over the last thirty years. The dynamics of the market portfolio also gives useful information about the evolution of ex-ante risk premia of stocks and bonds. Finally, we illustrate how the market portfolio could be used to benchmark diversified funds and to characterize the bets of long-term investment policy.

Keywords: market portfolio, stock, bond, benchmark, multi-assets allocation, active management, risk premium, strategic asset allocation, long-term investment policy

JEL Classification: G1

Suggested Citation

Louis, Rodolphe and Roncalli, Thierry, On the Market Portfolio for Multi-Asset Classes (April 25, 2012). Available at SSRN: https://ssrn.com/abstract=2064807 or http://dx.doi.org/10.2139/ssrn.2064807

Rodolphe Louis

ENSAE ( email )

92245 Malakoff Cedex
France

Thierry Roncalli (Contact Author)

Amundi Asset Management ( email )

90 Boulevard Pasteur
Paris, 75015
France

University of Evry ( email )

Boulevard Francois Mitterrand
F-91025 Evry Cedex
France

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