RT Monograph SR 00 A1 Fève, Patrick A1 Moura, Alban T1 Frictionless house-price momentum YR 2023 FD 2023-11 VO 23-1488 SP 34 K1 house prices K1 momentum K1 AR(2) process K1 rational expectations K1 news shocks AB This paper establishes that frictionless, rational-expectations models driven by specific ARMA(2,1) forcing processes are consistent with equilibrium asset-price dynamics featuring momentum. To reach this result, we first document that AR(2) models adequately capture the cyclical dynamics found in U.S. house prices, in particular the strong positive first-order autocorrelation in their first difference. Then, we show analytically that ARMA(2,1) exogenous drivers give rise to equilibrium AR(2) asset-price dynamics in a simple present-value model. Our pen-and-paper approach yields a straightforward economic interpretation of the results, emphasizing the contribution of anticipated shocks to generating asset-price momentum. We document the empirical relevance of our theoretical results by estimating the model from house-price data. Our findings suggest that house-price momentum does not necessarily signal irrational exuberance or strong frictions in housing markets. T2 TSE Working Paper PB TSE Working Paper PP Toulouse AV Published LK https://publications.ut-capitole.fr/id/eprint/48402/ UL http://tse-fr.eu/pub/128729