000161700 001__ 161700 000161700 005__ 20251017144605.0 000161700 0247_ $$2doi$$a10.1080/02102412.2025.2512615 000161700 0248_ $$2sideral$$a144345 000161700 037__ $$aART-2025-144345 000161700 041__ $$aeng 000161700 100__ $$0(orcid)0000-0001-5629-7526$$aBlasco, Natividad$$uUniversidad de Zaragoza 000161700 245__ $$aThe impact of global news items on bitcoin volatility 000161700 260__ $$c2025 000161700 5060_ $$aAccess copy available to the general public$$fUnrestricted 000161700 5203_ $$aThis study examines the temporary impact of major global news on bitcoin absolute price changes from 2018 to 2023, focusing on information related to the COVID-19 pandemic, inflation, and the Russia-Ukraine conflict. Using Bloomberg news and high-frequency data, the analysis is conducted in two stages. First, hourly price data and only highly significant news are analysed over the entire period. Second, second-by-second data from the CME Bitcoin Real Time Index (BRTI) is employed for key dates, incorporating broader news categories. The results show that bitcoin investors need approximately 45 minutes to process each news item on COVID-19 and war as information continuously flows into the market. This constant information processing enables investors to anticipate highly significant news on these topics up to two hours before its publication. Conversely, inflation-related news exhibits concentrated effects around scheduled release times. The findings highlight the necessity of selecting appropriate time frequencies for the analysis to avoid misinterpretation. Overall, the study highlights the significant impact that relevant global news has on bitcoin price volatility, suggesting that bitcoin markets are becoming increasingly integrated with traditional financial markets. 000161700 536__ $$9info:eu-repo/grantAgreement/ES/DGA/S11-23R-CEMBE$$9info:eu-repo/grantAgreement/ES/MICINN PID2022-136818NB-I00/AEI/10.13039/501100011033$$9info:eu-repo/grantAgreement/EUR/MICINN/TED2021-131216B-I00$$9info:eu-repo/grantAgreement/ES/MINECO/PID2019-104304GB-I00 000161700 540__ $$9info:eu-repo/semantics/embargoedAccess$$aby-nc$$uhttps://creativecommons.org/licenses/by-nc/4.0/deed.es 000161700 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000161700 700__ $$aCorredor, Pilar 000161700 700__ $$aSatrústegui, Nerea 000161700 7102_ $$14002$$2230$$aUniversidad de Zaragoza$$bDpto. Contabilidad y Finanzas$$cÁrea Economía Finan. y Contab. 000161700 773__ $$g(2025), [22 pp.]$$pRev. esp. financ. contab.$$tSpanish journal of finance and accounting / Revista española de financiacion y contabilidad$$x0210-2412 000161700 8564_ $$s469336$$uhttps://zaguan.unizar.es/record/161700/files/texto_completo.pdf$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2027-12-06 000161700 8564_ $$s713453$$uhttps://zaguan.unizar.es/record/161700/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2027-12-06 000161700 909CO $$ooai:zaguan.unizar.es:161700$$particulos$$pdriver 000161700 951__ $$a2025-10-17-14:15:08 000161700 980__ $$aARTICLE