Perron, Pierre; Shi, Wendong - In: Journal of risk and financial management : JRFM 13 (2020) 8/182, pp. 1-18
The effects of temporal aggregation and choice of sampling frequency are of great interest in modeling the dynamics of … asset price volatility. We show how the squared low-frequency returns can be expressed in terms of the temporal aggregation … of a high-frequency series. Based on the theory of temporal aggregation, we provide the link between the spectral density …
