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Volatility connectedness across global e-commerce stocks
- Source :
- Ekonomski pregled; ISSN 0424-7558 (Print); ISSN 1848-9494 (Online); Volume 75; Issue 4
- Publication Year :
- 2024
-
Abstract
- This paper studies the volatility connectedness between the stock prices of e-commerce companies. For that matter, we implement the TVP-VAR-Based connectedness procedure to unearth the dynamic structure of volatilities. This approach helps us to determine the volatility spillover between assets that are risk receivers or risk transmitters. We utilize the daily log-return data of the largest e-commerce companies by market cap. The data set consists of the daily open, close, high, and low prices of stocks between 2019-01-02 and 2022-12-23. We obtain the volatility of stocks using the Garman-Klass range-based approach. The findings reveal that the average total connected index is relatively high by 65.45%, which means that the forecasting error variance in the variables is due to the transmission and connectedness between these variables. Furthermore, net pairwise directional connectedness results evidence that the most dominant stock is Amazon within the network. Ultimately, we find the strongest bilateral volatility interconnectedness to occur between the stocks of Alibaba and Jingdong Mall.<br />Ovaj rad proučava povezanost volatilnosti između cijena dionica e-trgovinskih poduzeća. U tu svrhu implementira se TVP-VAR-Based postupak povezanosti kako bi se otkrila dinamička struktura volatilnosti. Ovaj pristup pomaže utvrditi prijenos volatilnosti između imovine koja prima ili prenosi rizik. Pritom se koriste logaritamski vrijednosti dnevnih povrata najvećih e-trgovinskih poduzeća prema tržišnoj kapitalizaciji. Skup podataka sastoji se od dnevnih cijena otvaranja, zatvaranja, najviših i najnižih cijena dionica u razdoblju od 2019-01-02 do 2022-12-23. Volatilnost dionica dobivena je koristeći Garman-Klass pristup temeljen na rasponu. Rezultati pokazuju da je prosječni ukupni indeks povezanosti relativno visok sa 65,45%, što znači da je varijanca prognostičke pogreške u varijablama rezultat prijenosa i povezanosti između tih varijabli. Nadalje, rezultati dvosmjerne povezanosti pokazuju da je Amazon najdominantnija dionica unutar mreže. Na kraju, otkrivamo da se najjača bilateralna povezanost volatilnosti javlja između dionica Alibabe i Jingdong Mall-a.
Details
- Database :
- OAIster
- Journal :
- Ekonomski pregled; ISSN 0424-7558 (Print); ISSN 1848-9494 (Online); Volume 75; Issue 4
- Notes :
- application/pdf, English
- Publication Type :
- Electronic Resource
- Accession number :
- edsoai.on1451497367
- Document Type :
- Electronic Resource