資源描述:
《異質(zhì)信念對(duì)我國(guó)股票收益率影響的實(shí)證研究》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、青島大學(xué)碩士學(xué)位論文異質(zhì)信念對(duì)我國(guó)股票收益率影響的實(shí)證研究姓名:甘法嶺申請(qǐng)學(xué)位級(jí)別:碩士專(zhuān)業(yè):金融學(xué)指導(dǎo)教師:劉喜華20110611摘要經(jīng)典的資產(chǎn)定價(jià)理論的基礎(chǔ)假設(shè)之一就是投資者擁有同質(zhì)信念,在此假設(shè)下,證券市場(chǎng)中諸如IPO之謎、動(dòng)量效應(yīng)、盈余慣性等金融市場(chǎng)異象無(wú)法得到很好的解釋。為此,學(xué)術(shù)界基于異質(zhì)信念和賣(mài)空限制,對(duì)資產(chǎn)定價(jià)和金融異象展開(kāi)理論研究和實(shí)證分析,并取得了較大進(jìn)展。研究認(rèn)為,從異質(zhì)信念和賣(mài)空限制的角度出發(fā),隨著時(shí)間推移和信息傳遞,股價(jià)會(huì)呈現(xiàn)先高估后下降的特點(diǎn)。首先參考國(guó)內(nèi)外現(xiàn)有的研究成果,分析了異質(zhì)信念代理指標(biāo)的特征;然
2、后基于信息影響的角度選取基于市場(chǎng)調(diào)整的額外換手率作為中國(guó)股票市場(chǎng)的異質(zhì)信念指標(biāo),檢驗(yàn)異質(zhì)信念在嚴(yán)格賣(mài)空的限制條件下對(duì)我國(guó)股票收益率的影響,從季度收益、月度收益和周內(nèi)收益的統(tǒng)計(jì)和實(shí)證研究層面發(fā)現(xiàn),投資者信念的變化是我國(guó)股市收益率存在一定規(guī)律性的推動(dòng)因素,在我國(guó)股市年報(bào)、半年報(bào)以及周末的集中信息公布時(shí)間窗口,我國(guó)股市的收益率較高,但隨著時(shí)間的推移,收益率偏低,這與Miller提出的異質(zhì)信念對(duì)股票價(jià)格的影響理論相吻合,信息的沖擊消除投資者的異質(zhì)信念,使股票價(jià)格由高估回歸到真實(shí)價(jià)值,從而收益率偏低。就此,提出如下政策建議:即進(jìn)一步完善我國(guó)股
3、票市場(chǎng)的信息披露制度,建立高質(zhì)量多層次的資本市場(chǎng)體系,完善股指期貨和融資融券等金融產(chǎn)品,培養(yǎng)投資者價(jià)值投資的理念。關(guān)鍵詞:異質(zhì)信念;資產(chǎn)定價(jià);GARCH模型AbstractThefinancialmarketvisions,suchasIP0mystery,momentumeffect,earningsmoment啪,andSOon,couldnotbeperfectlyexplainedbytheclassicalassetpricingtheorybasedonassumptionthatinvestorshavehomogen
4、eousbeliefs.Sotheyhavebeenresearchedandmadesignificantprogress,basedontheassumptionofheterogeneousbeliefsandshortsalerestrictions.ItWaSconcludedthatthestockwoulddropafterbeingovervalued,astimewentonandinformationtransfcrcd.Inthispaper,thecharacteristicsofheterogeneousb
5、eliefproxyindicatorswerefirstlyanalyzedinviewofthefindingsathomeandabroad.Thentheadditionaladjustmentonaccou】讎ofChinastockturnoverwasselectedastheproxyindicator,andtheeffeets011Chinas協(xié)ckreturnswerestudiedonassumptionoftheshortsalerestrictions.ItWasfoundoutthatmestockre
6、turnschangedwiththeinvestors’beliefs,onaccountofthequarterly,monthly,andweeklyearnings.Thestockreturnswerehigherinthetimewindowsofannualandsemiannualreports,andweekendinformationrelease,butdecreasingovertime.correspondingwiththeMiller’Stheorywhichpresentedtheeffectsofh
7、eterogeneousbeliefsonstockprice.Thestockpricedecreasedtothetruevaluewiththeweakeningofinformationimpact.Finally,effectivepolicyrecommendationswereproposedasfollows:improvingthestockmarketinformationdisclosuresystem,buildingthehigh-qualityandmulti.1evelcapitalmarketsyst
8、em,anddevelopingtheinvestors’philosophyonvalue.Keywords:Heterogeneousbeliefs;AssetPricing;GARCHModel㈣9洲8iiii■l洲3㈨4㈣0?