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Return Persistence, Risk Dynamics and Momentum Exposures of Equity and Bond Mutual Funds

To analyze persistence in mutual fund performance, it is common practice to construct portfolios of funds based on past fund returns. Using a large sample of equity and bond funds, we show that this approach introduces dynamic exposures to common stock and bond risk factors. Correcting for risk dynamics substantially reduces the level of persistence in risk-adjusted performance and drives out the explanatory power of stock and bond momentum factors.