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1、對(duì)外經(jīng)濟(jì)貿(mào)易大學(xué)碩士學(xué)位論文政策因素對(duì)我國(guó)A股市場(chǎng)的影響研究姓名:向偉申請(qǐng)學(xué)位級(jí)別:碩士專業(yè):金融學(xué)指導(dǎo)教師:高洪星201103摘要任何國(guó)家的政府都會(huì)出臺(tái)政策對(duì)本國(guó)股票市場(chǎng)進(jìn)行監(jiān)管和調(diào)控,以保障股市健康平穩(wěn)運(yùn)行。然而,與西方成熟市場(chǎng)不同,我國(guó)股市自成立之初就被打上了“政策市”的烙印,政策因素在很大程度上左右了股市的運(yùn)行,也造成了股市波動(dòng)的頻繁性和劇烈性。本文首先詳細(xì)介紹了現(xiàn)有文獻(xiàn)對(duì)“政策市”含義,我國(guó)是否屬于“政策市’’,政府是否應(yīng)該對(duì)股市進(jìn)行干預(yù)及我國(guó)“政策市”現(xiàn)象弱化的原因等方面的研究成果;其次,從影響股市波動(dòng)的因素入手,界定了“政策”和“政策市”的含義,描述了我國(guó)“
2、政策市"的特征表現(xiàn),并且將重大政策出臺(tái)時(shí)機(jī)和股市指數(shù)的走勢(shì)相結(jié)合直觀說明了“政策市’’造成的影響;再次,選取1993年1月1日至2010年12月31日期間上海證券交易所綜合指數(shù)日收盤數(shù)據(jù)作為樣本,利用ARCH簇模型進(jìn)行建模分析,通過比較所得GARCH、TGARCH、EGARCH和CGARCH四種模型,采用了擬合效果最好的CGARCH模型,在CGARCH模型所得的條件標(biāo)準(zhǔn)差基礎(chǔ)}:進(jìn)一步分析了政策對(duì)股市波動(dòng)的影響,證明了我國(guó)“政策市”現(xiàn)象的存在,并分析了我國(guó)股市政策效應(yīng)弱化的原因;最后,根據(jù)本文理論和實(shí)證分析,從體制創(chuàng)新,明確政府定位,完善監(jiān)管制度和法律法規(guī)體系,強(qiáng)化信息披
3、露機(jī)制等方而提出針對(duì)性的建議。關(guān)鍵詞:政策市股市波動(dòng)ARCH簇模型政策效應(yīng)弱化Abstract舢lcountriesintheworldwouldpublishrelative1awsandrulestosuperviseandregulatetheoperationofthedomesticstockmarketinordertomakethemarketrunsmoothly.However,differentfromthewesternmutualmarket,China'sstockmarkethasbeencalled竹policymarket”sinceits
4、birth.Thepolicyaffectsthemarketlargely,andmakesthevolityofthemarketfrequentandintense.Tllisarticlefirstlyintroducestheexistingliteraturesaboutthedefinationofthepolicymarket,whetherChina'smarketisapolicymarket,whetherourgovernmentshouldintervenethestockmarket,theweaknessofthepolicyeffect,a
5、ndthereasonofitsweakness.Next,thearticledefinesthemeaningofthepolicyandthepolicymarketfollowingtheanalysisofthefactorsofthestockmarketvolity.Atthesametime,wedescribethecharacters,andcombinethetimingofthepolicywiththestockmarketindex.ThenweconcludethatChina’Smarketisapolicymarket,andanalys
6、istheeffecttothemarket.TKrd,WeselecttheclosingdataofShanghaistockmarketcompositindexfromJanuary1,1993toDecember31,2010asamodel,andllseARCHmodelstomakeanalysis.ThroughthecomparisionoftheresuRofGARCH,TGARCH,EGARCH,andCGARCHmodels,wedecidetouseCGARCHmodelbecauseofitsllighfitness.Basedontheco
7、nditionalvarianceofCGARCHmodel,Weconfimourconclusionagain,andthen,weanalysethewhytheeffectofpolicygoesweak.Intheend,accordingtotheanalysis,weputforwardsomerelevantadviceaboutthegovernment’Sroles,theimprovementofrulesandlaws,theenhancementofinf01Tnationpublishmentand