A COMPARISON OF INDEXING AND BETA AMONG PENSION AND NONPENSION ASSETS

In this article I contrast the investment behavior of institutional portfolios having pension assets with portfolios having nonpension assets. Differences in incentive compensation plans and regulation give pension executives unique incentives to track benchmark indices. Accordingly, pension assets are more likely than nonpension assets to be allocated to index funds. Also, portfolios composed of pension assets are more likely than other portfolios to (i) have low tracking error in absolute value, (ii) be index funds, and (iii) have market betas close to one. Portfolios with relatively large pension asset market share exhibit similar characteristics and the tendency to index increases with asset class risk. Actively managed pension assets are also more likely to be invested in lower risk asset classes than actively managed nonpension assets.