{"id":"https://openalex.org/W2145251569","doi":"https://doi.org/10.2139/ssrn.510146","title":"On the Instability of Betas","display_name":"On the Instability of Betas","publication_year":2004,"publication_date":"2004-01-01","ids":{"openalex":"https://openalex.org/W2145251569","doi":"https://doi.org/10.2139/ssrn.510146","mag":"2145251569"},"language":"en","primary_location":{"id":"doi:10.2139/ssrn.510146","doi":"https://doi.org/10.2139/ssrn.510146","is_oa":true,"landing_page_url":"https://doi.org/10.2139/ssrn.510146","pdf_url":null,"source":{"id":"https://openalex.org/S4210172589","display_name":"SSRN Electronic Journal","issn_l":"1556-5068","issn":["1556-5068"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1318003438","host_organization_name":"RELX Group (Netherlands)","host_organization_lineage":["https://openalex.org/I1318003438"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":null,"raw_type":"posted-content"},"volume":null,"type":"preprint","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://doi.org/10.2139/ssrn.510146","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5008941582","display_name":"Pablo Fern\u00e1ndez","orcid":"https://orcid.org/0000-0001-9059-2959","observed_orcids":["https://orcid.org/0000-0001-9059-2959"]},"institutions":[{"id":"https://openalex.org/I4405253577","display_name":"IESE Business School","ror":"https://ror.org/00v9d4z37","country_code":"ES","type":"education","lineage":["https://openalex.org/I4405253577","https://openalex.org/I88155538"]},{"id":"https://openalex.org/I4405261252","display_name":"ESE Business School","ror":"https://ror.org/050mwrs16","country_code":"CL","type":"education","lineage":["https://openalex.org/I4405261252"]}],"countries":["CL","ES"],"is_corresponding":true,"raw_author_name":"Pablo Fernandez","raw_affiliation_strings":["IESE Business School, Avenida Pearson 21, Barcelona, 08034, Spain","IESE Business School"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"IESE Business School, Avenida Pearson 21, Barcelona, 08034, Spain","institution_ids":["https://openalex.org/I4405253577"]},{"raw_affiliation_string":"IESE Business School","institution_ids":["https://openalex.org/I4405253577","https://openalex.org/I4405261252"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5008941582"],"corresponding_institution_ids":["https://openalex.org/I4405253577","https://openalex.org/I4405261252"],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":23,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10047","display_name":"Financial Markets and Investment Strategies","score":0.9833999872207642,"subfield":{"id":"https://openalex.org/subfields/2003","display_name":"Finance"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T10047","display_name":"Financial Markets and Investment Strategies","score":0.9833999872207642,"subfield":{"id":"https://openalex.org/subfields/2003","display_name":"Finance"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T12675","display_name":"Financial Reporting and Valuation Research","score":0.006399999838322401,"subfield":{"id":"https://openalex.org/subfields/1408","display_name":"Strategy and Management"},"field":{"id":"https://openalex.org/fields/14","display_name":"Business, Management and Accounting"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T12123","display_name":"Financial Analysis and Corporate Governance","score":0.005900000222027302,"subfield":{"id":"https://openalex.org/subfields/1402","display_name":"Accounting"},"field":{"id":"https://openalex.org/fields/14","display_name":"Business, Management and Accounting"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/capital-asset-pricing-model","display_name":"capital asset pricing model","score":0.7850000262260437},{"id":"https://openalex.org/keywords/return-frequency","display_name":"return frequency","score":0.7620000243186951}],"concepts":[{"id":"https://openalex.org/C207821765","wikidata":"https://www.wikidata.org/wiki/Q405372","display_name":"Instability","level":2,"score":0.6607115268707275},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.351754367351532},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.14918774366378784},{"id":"https://openalex.org/C57879066","wikidata":"https://www.wikidata.org/wiki/Q41217","display_name":"Mechanics","level":1,"score":0.1090494692325592}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.2139/ssrn.510146","doi":"https://doi.org/10.2139/ssrn.510146","is_oa":true,"landing_page_url":"https://doi.org/10.2139/ssrn.510146","pdf_url":null,"source":{"id":"https://openalex.org/S4210172589","display_name":"SSRN Electronic Journal","issn_l":"1556-5068","issn":["1556-5068"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1318003438","host_organization_name":"RELX Group (Netherlands)","host_organization_lineage":["https://openalex.org/I1318003438"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":null,"raw_type":"posted-content"}],"best_oa_location":{"id":"doi:10.2139/ssrn.510146","doi":"https://doi.org/10.2139/ssrn.510146","is_oa":true,"landing_page_url":"https://doi.org/10.2139/ssrn.510146","pdf_url":null,"source":{"id":"https://openalex.org/S4210172589","display_name":"SSRN Electronic Journal","issn_l":"1556-5068","issn":["1556-5068"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1318003438","host_organization_name":"RELX Group (Netherlands)","host_organization_lineage":["https://openalex.org/I1318003438"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":null,"raw_type":"posted-content"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":3,"referenced_works":["https://openalex.org/W1558288213","https://openalex.org/W2119542752","https://openalex.org/W3197294315"],"related_works":["https://openalex.org/W3122136825","https://openalex.org/W2133621250","https://openalex.org/W2153893683","https://openalex.org/W3123222992","https://openalex.org/W2116553123","https://openalex.org/W137358902","https://openalex.org/W2756205248","https://openalex.org/W2020946462","https://openalex.org/W7098943462","https://openalex.org/W2905915342"],"abstract_inverted_index":null,"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":1}],"updated_date":"2026-10-16T09:59:22.235173","created_date":"2016-06-24T00:00:00"}