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[{"key": "dc.contributor.advisor", "value": "B\u00f6ckerman, Petri", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Iham\u00e4ki, Roni", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2025-04-15T13:06:48Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2025-04-15T13:06:48Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2025", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/101445", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "T\u00e4m\u00e4 pro gradu -tutkielma tarkastelee COVID-19-pandemiaan liittyvien uutisten vaikutusta Suomen osakemarkkinoihin tapahtumatutkimuksena. Tutkielmassa analysoidaan kahden merkitt\u00e4v\u00e4n uutistapahtuman, WHO:n 11.3.2020 antaman pandemiajulistuksen ja Suomen Uudenmaan sulun 27.3.2020, vaikutuksia osakekurssien kehitykseen. Analyysiss\u00e4 hy\u00f6dynnet\u00e4\u00e4n OMX Helsinki GI -indeksi\u00e4 sek\u00e4 yhdeks\u00e4\u00e4 Helsingin p\u00f6rssin toimialaindeksi\u00e4 aineistona, ja normaalituottojen estimoimiseksi k\u00e4ytet\u00e4\u00e4n jatkuvan keskiarvon mallia sek\u00e4 markkinamallia. Estimointi-ikkunan pituudeksi on asetettu t\u00e4ss\u00e4 tutkielmassa 239 tapahtumaikkunaa edelt\u00e4v\u00e4\u00e4 p\u00e4iv\u00e4\u00e4 ja tapahtumaikkuna on kokonaisuudessaan m\u00e4\u00e4ritetty 21 p\u00e4iv\u00e4n pituiseksi ymp\u00e4r\u00f6iden valikoidut tapahtumap\u00e4iv\u00e4t kymmenell\u00e4 p\u00e4iv\u00e4ll\u00e4 ennen ja j\u00e4lkeen tapahtuman. Tutkielmassa on tarkasteltu sek\u00e4 markkinaa yleisesti kuvaavia sek\u00e4 sektorikohtaisia tuloksia, joista erityisesti p\u00e4ivitt\u00e4isi\u00e4 ep\u00e4normaaleja tuottoja sek\u00e4 kumulatiivisia ep\u00e4normaaleja tuottoja valikoiduilta aikav\u00e4leilt\u00e4. Tulokset osoittavat, ett\u00e4 erityisesti WHO:n pandemiajulistus vaikutti merkitt\u00e4v\u00e4sti negatiivisesti Suomen osakemarkkinoihin, mutta Uudenmaan sulun yhteydess\u00e4 vaikutus oli my\u00f6s negatiivinen ja tilastollisesti merkitsev\u00e4 vaikkakin pienempi, kuin pandemiajulistuksen yhteydess\u00e4. Lis\u00e4ksi sektorikohtainen analyysi paljastaa, ett\u00e4 tietyt toimialat, kuten energia-, rahoitus-, kiinteist\u00f6- ja yleishy\u00f6dyllisten palveluiden sektori, k\u00e4rsiv\u00e4t tapahtumista odotettua enemm\u00e4n, kun taas muut toimialat suoriutuivat odotusten mukaisesti suhteessa yleisiin markkinan liikkeisiin. Lis\u00e4ksi terveydenhuoltosektorin havaittiin hy\u00f6tyneen COVID-19 kehityksest\u00e4 ja t\u00e4t\u00e4 my\u00f6t\u00e4 sit\u00e4 koskevista uutisista. N\u00e4m\u00e4 l\u00f6yd\u00f6kset ovat suurilta osin varsin linjassa aikaisemman kirjallisuuden kanssa, jossa samantyyppisi\u00e4 tutkimuksia on toteutettu toisilla kohdemarkkinoilla. Tutkimus t\u00e4ydent\u00e4\u00e4 aiempaa kirjallisuutta pandemian osakemarkkinoihin kohdistuneista vaikutuksista sek\u00e4 t\u00e4ydent\u00e4\u00e4 tietoaukkoa sektorikohtaisesta tarkastelusta liittyen koronan vaikutuksiin Suomen osakemarkkinoilla.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija.group@korppi.jyu.fi) on 2025-04-15T13:06:48Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2025-04-15T13:06:48Z (GMT). No. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "83", "language": null, "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "CC BY-NC-ND 4.0", "language": null, "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.title", "value": "COVID-19 uutisten vaikutus osaketuottoihin Suomen osakemarkkinoilla", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202504153270", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Jyv\u00e4skyl\u00e4n yliopiston kauppakorkeakoulu", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Jyv\u00e4skyl\u00e4 University School of Business and Economics", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Taloustieteen maisteriohjelma", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Master's Degree Programme in Economics", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.copyright", "value": "\u00a9 The Author(s)", "language": null, "element": "rights", "qualifier": "copyright", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://creativecommons.org/licenses/by-nc-nd/4.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.description.accessibilityfeature", "value": "unknown accessibility", "language": "en", "element": "description", "qualifier": "accessibilityfeature", "schema": "dc"}, {"key": "dc.description.accessibilityfeature", "value": "ei tietoa saavutettavuudesta", "language": "fi", "element": "description", "qualifier": "accessibilityfeature", "schema": "dc"}]
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