1st Quarter (2025)

Vol. 23, No. 1, 2025 by Stephen Laipply, Ananth Madhavan, James Mauro and Nogie Udevbulu Assets in fixed income index mutual funds and exchange-traded funds (ETFs) have grown substantially in recent years. This paper examines fixed income index fund portfolio rebalancing efficiency using empirical evidence from four large fixed income index funds. We show how… Read more

Vol. 23, No. 1, 2025 by Thomas M. Idzorek, Paul D. Kaplan and Roger G. Ibbotson The Popularity Asset Pricing Model (PAPM) generalizes the Capital Asset Pricing Model (CAPM) with popularity as the basis for multiple priced characteristics. The CAPM along with the Arbitrage Pricing Theory (APT) are the dominant textbook asset pricing models. Both… Read more

Vol. 23, No. 1, 2025 by Moshe Levy None of the explanations suggested so far for the size anomaly seems to be consistent with the empirical evidence. This paper examines under-diversification as a possible explanation for the size effect. When the portfolio weight of a stock is non-negligible, its variance is priced. As small stocks… Read more

Vol. 23, No. 1, 2025 by Wei Dai, Xing Hong, Robert C. Merton and Mathieu Pellerin Using daily and intraday data from 1997 to 2023, we study strategies that stabilize volatility around a target by rebalancing between the S&P 500 and Treasury bills based on a broad set of volatility forecasts. Somewhat counterintuitively, lower forecasting… Read more