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Erscheinungsjahr: 
2019
Quellenangabe: 
[Journal:] Risks [ISSN:] 2227-9091 [Volume:] 7 [Issue:] 4 [Article No.:] 113 [Publisher:] MDPI [Place:] Basel [Year:] 2019 [Pages:] 1-22
Verlag: 
MDPI, Basel
Zusammenfassung: 
In this paper, we apply machine learning to forecast the conditional variance of long-term stock returns measured in excess of different benchmarks, considering the short- and long-term interest rate, the earnings-by-price ratio, and the inflation rate. In particular, we apply in a two-step procedure a fully nonparametric local-linear smoother and choose the set of covariates as well as the smoothing parameters via cross-validation. We find that volatility forecastability is much less important at longer horizons regardless of the chosen model and that the homoscedastic historical average of the squared return prediction errors gives an adequate approximation of the unobserved realised conditional variance for both the one-year and five-year horizon.
Schlagwörter: 
autocorrelation
benchmark
cross-validation
long-term forecasts
overlapping returns
prediction
stock return volatility
JEL: 
C14
C53
C58
G17
G22
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