2025年CFA一级真题练习

2025年CFA一级真题练习考试时间：______分钟总分：______分姓名：______考试时间：180分钟注意事项：1.请在答题卡上填写您的姓名、准考证号等信息。2.本试卷包含客观题和主观题两部分。客观题请使用2B铅笔填涂答题卡；主观题请使用黑色墨水笔在答题纸上作答。3.请仔细阅读题目，确保理解题意后再作答。4.客观题作答务必与答题卡上的题号对应，错填、漏填或填涂错误均无效。5.主观题作答必须写在答题纸上指定的位置，写在草稿纸或试卷上无效。6.考试结束后，请将试卷和答题卡/答题纸一并交回。第一部分：客观题（本部分共60题，每题1分，共60分。请将你认为正确的选项字母填涂在答题卡相应位置。）1.AccordingtotheCFAInstituteCodeandStandards,whichofthefollowingbestdescribestheobligationof"diligenceandreasonablecare"foraCFAcharterholder?A.Toalwaysprioritizeclientinterestsoverpersonalgain.B.Topossessandapplysufficientknowledgeandskillsnecessarytoperformprofessionaldutiescompetently.C.Toinformclientsofallpotentialconflictsofinterestbeforematerialityisreached.D.Toobtainexplicitwrittenconsentfromclientsbeforemakinganyinvestmentrecommendations.2.Aportfoliomanagerinvestsintwoassets,AssetAandAssetB.AssetAhasanexpectedreturnof12%andastandarddeviationof15%.AssetBhasanexpectedreturnof8%andastandarddeviationof10%.ThecorrelationcoefficientbetweenthereturnsofAssetAandAssetBis0.25.Whatistheexpectedreturnofaportfolioconsistingof60%AssetAand40%AssetB?A.10.00%B.10.60%C.11.00%D.11.40%3.Theprimarypurposeofacompany'smanagementdiscussionandanalysis(MD&A)sectionisto:A.Providedetailedauditedfinancialstatementdata.B.Offermanagement'sperspectiveonthecompany'sfinancialperformance,condition,andfutureprospects.C.Presentthecompany'scapitalstructureanddividendpolicy.D.Detailthelegalandregulatoryenvironmentinwhichthecompanyoperates.4.Whichofthefollowingstatementsregardingtheefficientmarkethypothesis(EMH)ismostaccurate?A.TheweakformofEMHsuggeststhatcurrentpricesreflectallpasttradinginformation.B.Thesemi-strongformofEMHimpliesthattechnicalanalysiscanconsistentlygenerateabnormalreturns.C.ThestrongformofEMHindicatesthatmanagerscanconsistentlyoutperformthemarketbyusinginsideinformation.D.AllthreeformsofEMHassertthatmarketsarenotefficient.5.Astockhasanexpectedreturnof18%andastandarddeviationof30%.Therisk-freerateis5%.AccordingtotheCapitalAssetPricingModel(CAPM),whatisthestock'sbetaifthemarketriskpremiumis10%?A.0.50B.0.75C.1.00D.1.256.Whichofthefollowingfinancialratiosismostdirectlyaffectedbyacompany'sinventorymanagementefficiency?A.Debt-to-equityratioB.Returnonassets(ROA)C.InventoryturnoverratioD.Grossprofitmargin7.Acompany'sbondhasafacevalueof$1,000,acouponrateof6%,andmaturesin5years.Ifthemarketyieldtomaturityis5%,whatistheapproximatepriceofthebond?A.$950B.$980C.$1,000D.$1,0208.Whichofthefollowingstatementsaboutoptionsistrue?A.Acalloptiongivestheholdertheright,butnottheobligation,tobuytheunderlyingassetataspecifiedpricebeforetheexpirationdate.B.Thebuyerofaputoptionbearstheobligationtoselltheunderlyingassetataspecifiedpricebeforetheexpirationdate.C.Thepremiumpaidforanoptionrepresentsthemaximumpotentiallossfortheselleroftheoption.D.Thevalueofanoptionissolelydeterminedbythedifferencebetweenthestrikepriceandthecurrentpriceoftheunderlyingasset.9.Theconceptofdurationmeasures:A.Thesensitivityofabond'spricetochangesininterestrates.B.Theweightedaveragetimeuntilacompanyrepaysitsdebt.C.Thetimerequiredforaninvestmenttodoubleatagivencompoundrateofreturn.D.Thevariabilityofaninvestment'sreturnsovertime.10.Whichofthefollowinginvestmentstylesischaracterizedbyfocusingoncompaniesthatarecurrentlyundervaluedaccordingtofundamentalanalysis?A.GrowthinvestingB.ValueinvestingC.IndexinvestingD.Contrarianinvesting11.Amutualfundhasaportfoliovalueof$100millionandliabilitiesof$10million.Ithas10millionsharesoutstanding.Whatisthefund'snetassetvalue(NAV)pershare?A.$1.00B.$10.00C.$100.00D.$1,000.0012.Whichofthefollowingisgenerallyconsideredamoreliquidassetthanrealestate?A.CorporatebondsB.CommonstockC.PrivateequityD.Collectibles13.Theprimaryfunctionofacentralbankisto:A.Maximizetheprofitabilityofitsshareholders.B.Regulatecommercialbanksandfinancialinstitutions.C.Promotepricestabilityandmaximumemployment.D.Overseethestockexchangeandsetlistingrequirements.14.AccordingtotheModigliani-Millertheorem(withnotaxes),thevalueofaleveredfirmisequalto:A.Thevalueofanunleveredfirmplusthepresentvalueofthetaxshield.B.Thevalueofanunleveredfirmminusthepresentvalueoftheinteresttaxshield.C.Thevalueofanunleveredfirm.D.Thevalueofanunleveredfirmplusthemarketvalueofitsdebt.15.Whichofthefollowingisaprimarycharacteristicoftheprimarymarket?A.Itiswherepreviouslyissuedsecuritiesaretraded.B.Itfacilitatestheinitialofferingofnewsecuritiestothepublic.C.Itisprimarilyusedforshort-termborrowingandlending.D.ItisregulatedbytheFederalReserve.16.Acompanyreportsthefollowingfortheyear:salesrevenueof$500,000;costofgoodssoldof$300,000;operatingexpensesof$150,000;andinterestexpenseof$20,000.Thecompany'searningsbeforetax(EBT)is:A.$30,000B.$50,000C.$70,000D.$100,00017.Whichofthefollowingstatementsabouttheweightedaveragecostofcapital(WACC)ismostaccurate?A.Itrepresentsthecostofequitycapitalonly.B.Itiscalculatedbyweightingthecostofeachsourceofcapitalbyitsproportioninthecompany'scapitalstructure.C.Itisalwaysequaltothecompany'spre-taxcostofdebt.D.Itincreasesasthecompanytakesonmoredebtinitscapitalstructure.18.Theprocessofgroupingsimilarinvestmentstogethertoreduceunsystematicriskisknownas:A.DiversificationB.AssetallocationC.PortfoliorebalancingD.Riskmitigation19.Whichofthefollowingisameasureofacompany'sabilitytomeetitsshort-termobligationsusingitsmostliquidassets?A.Returnonequity(ROE)B.CurrentratioC.Debt-to-equityratioD.Price-to-earnings(P/E)ratio20.Astockhasabetaof1.5.Ifthemarketreturnisexpectedtobe12%,andtherisk-freerateis4%,whatistheexpectedreturnofthestockaccordingtotheCapitalAssetPricingModel(CAPM)?A.4.00%B.8.00%C.12.00%D.18.00%21.Whichofthefollowingtypesofriskismostcloselyassociatedwithinvestinginindividualstocksratherthandiversifiedportfolios?A.SystematicriskB.UnsystematicriskC.InterestrateriskD.Inflationrisk22.Acompany'sinventoryturnoverratiois6timesperyear.Iftheaverageinventoryis$60,000,whatisthecostofgoodssoldfortheyear?A.$10,000B.$60,000C.$360,000D.$360,000,00023.Whichofthefollowingstatementsaboutthebinomialoptionpricingmodelistrue?A.ItisprimarilyusedforpricingAmericanoptions.B.Itassumesthatthepriceoftheunderlyingassetmovesinasingledirection(upordown).C.ItissimplertousethantheBlack-Scholes-Mertonmodel.D.Itrequirestheassumptionofcontinuouspricemovements.24.Theprimarygoalofacompany'scapitalbudgetingdecisionsisto:A.Maximizethecompany'sshort-termprofits.B.Minimizethecompany'staxliability.C.Selectinvestmentprojectsthatincreasethecompany'svalue.D.Maintainastabledebt-to-equityratio.25.Whichofthefollowingisacomponentofthestatementofcashflows?A.EquityfinancingB.DividendspaidC.AccumulateddepreciationD.Retainedearnings26.Acompany'sbondhasacouponrateof5%,ayieldtomaturityof6%,and10yearstomaturity.Asthebondmovesclosertoitsmaturitydate,whichofthefollowingislikelytooccur?A.Thebond'spricewillincrease,anditsyieldtomaturitywilldecrease.B.Thebond'spricewilldecrease,anditsyieldtomaturitywillincrease.C.Thebond'spriceanditsyieldtomaturitywillbothincrease.D.Thebond'spriceanditsyieldtomaturitywillbothdecrease.27.Whichofthefollowingisadisadvantageofusingtheinternalrateofreturn(IRR)forevaluatinginvestmentprojects?A.Itdoesnotconsiderthetimevalueofmoney.B.Itcangivemultipleornosolutionsincertaincases.C.Itassumesthatcashflowsarereinvestedatthecostofcapital.D.Itisdifficulttocalculatewithoutafinancialcalculator.28.Aportfolioconsistsof60%stocksand40%bonds.Theexpectedreturnofthestocksis12%,andtheexpectedreturnofthebondsis6%.Thestandarddeviationofthestocksis18%,andthestandarddeviationofthebondsis8%.Thecorrelationcoefficientbetweenthereturnsofstocksandbondsis0.10.Whatistheexpectedreturnoftheportfolio?A.6.00%B.8.00%C.9.00%D.10.00%29.Whichofthefollowingstatementsabouttheefficientmarkethypothesis(EMH)isfalse?A.TheweakformofEMHsuggeststhattechnicalanalysiscannotgenerateabnormalreturns.B.Thesemi-strongformofEMHimpliesthatfundamentalanalysiscannotgenerateabnormalreturns.C.ThestrongformofEMHindicatesthatnoonecanconsistentlyoutperformthemarket.D.AllformsofEMHsuggestthatmarketsquicklyincorporatenewinformationintoprices.30.WhichofthefollowingisgenerallyconsideredamoreriskyinvestmentthanaU.S.Treasurybond?A.Acertificateofdeposit(CD)issuedbyalargebank.B.Amunicipalbondwithahighcreditrating.C.Acommonstockofawell-establishedcompany.D.AsavingsaccountatabankinsuredbytheFDIC.31.Theprocessofconvertingacompany'sassetsandoperationsintoasingle,consolidatedfinancialstatementisknownas:A.ConsolidationB.HorizontalanalysisC.VerticalanalysisD.Ratioanalysis32.Whichofthefollowingisameasureofacompany'sliquidity,calculatedascurrentassetsminuscurrentliabilities?A.QuickratioB.Debt-to-equityratioC.WorkingcapitalD.Earningspershare(EPS)33.Acompany'sstockiscurrentlytradingat$50pershare.Thecompanyannouncesa2-for-1stocksplit.Whatwillbethenewtradingpriceofthestock,assumingnootherfactorschange?A.$25B.$50C.$100D.$20034.Whichofthefollowingisaprimaryfunctionofa401(k)plan?A.Toprovideretirementincomeforpublicemployees.B.Tooffertax-deferredsavingsforemployeesofprivatecompanies.C.Toprovidehealthinsurancebenefitsforemployees.D.Toprovideshort-termemergencyloanstoemployees.35.Theconceptofarbitrageinvolves:A.Buyingandsellingsecuritiestoprofitfromsmallpricedifferences.B.Investinginassetswithhighpotentialriskandhighpotentialreturn.C.Diversifyinginvestmentsacrossdifferentassetclasses.D.Borrowingmoneytoinvestinadditionalsecurities.36.Whichofthefollowingstatementsaboutthetermstructureofinterestratesismostaccurate?A.Theyieldcurvealwaysslopesdownward.B.Theyieldcurvereflectsexpectationsaboutfutureinterestrates.C.Aflatyieldcurveindicatesthatinvestorsexpectinterestratestoremainconstantinthefuture.D.Thetermstructuretheorysuggeststhattheshapeoftheyieldcurveisdeterminedbytherelativesupplyanddemandforcredit.37.Acompany'sfinancialleverageismeasuredby:A.Thedebt-to-equityratio.B.Thecurrentratio.C.Theinventoryturnoverratio.D.Thereturnonassets(ROA).38.Whichofthefollowingisacharacteristicofanefficientmarket?A.Pricesaredrivenbyinvestorsentimentandemotions.B.Allavailableinformationisreflectedinprices.C.Securitiesarepricedatpremiumsbasedonfuturegrowthexpectations.D.Itiseasytoidentifymispricedsecuritiesandgenerateabnormalreturns.39.Theprimarypurposeofacompany'scashflowstatementisto:A.Showhowthecompany'sassetsandliabilitieschangedoveraperiod.B.Reportthecompany'sprofitabilityandcashflowsfromoperating,investing,andfinancingactivities.C.Detailthecompany'sdividendpolicyandcapitalstructure.D.Comparethecompany'sfinancialperformancetoitscompetitors.40.Whichofthefollowingisariskfactorspecifictothefixedincomemarket?A.MarketriskB.LiquidityriskC.CreditriskD.Alloftheabove41.Astockhasabetaof1.0.Ifthemarketreturnincreasesby10%,whatistheexpectedchangeinthestock'sreturn,accordingtotheCapitalAssetPricingModel(CAPM)?A.0%B.5%C.10%D.20%42.Whichofthefollowingisacomponentoftheequitysectionofacompany'sbalancesheet?A.AccountspayableB.CommonstockC.Long-termdebtD.Accumulateddepreciation43.Theprimarygoalofacompany'sworkingcapitalmanagementisto:A.Maximizethecompany'slong-termprofitability.B.Ensurethecompanyhassufficientshort-termassetstomeetitsshort-termobligations.C.Minimizethecompany'staxliability.D.Maximizethecompany'smarketvalue.44.WhichofthefollowingstatementsabouttheBlack-Scholes-Mertonmodelistrue?A.ItisprimarilyusedforpricingEuropeanoptions.B.Itassumesthatthepriceoftheunderlyingassetfollowsanormaldistribution.C.Itrequirestheassumptionofcontinuouspricemovements.D.Itissimplertousethanthebinomialoptionpricingmodel.45.Acompany'sbondhasafacevalueof$1,000,acouponrateof7%,andmaturesin10years.Ifthemarketyieldtomaturityis8%,whatistheapproximatecurrentyieldofthebond?A.5.60%B.6.00%C.7.00%D.8.00%46.Whichofthefollowingisameasureofacompany'sprofitability,calculatedasnetincomedividedbytotalassets?A.Returnonassets(ROA)B.Returnonequity(ROE)C.Debt-to-equityratioD.Currentratio47.Theprimaryfunctionofamutualfundisto:A.Provideloanstoindividualsandbusinesses.B.Investinadiversifiedportfolioofsecuritiestoachievespecificinvestmentgoals.C.Underwritesecuritiesofferings.D.Facilitatethetradingofsecuritiesonthestockexchange.48.Whichofthefollowingisacharacteristicofawell-diversifiedinvestmentportfolio?A.Itinvestsalargeportionofitscapitalinasinglestock.B.Itholdsasmallnumberofassetsthatarehighlycorrelatedwitheachother.C.Itspreadsinvestmentsacrossvariousassetclassesandindividualsecurities.D.Itprimarilyinvestsinassetswithhighriskandhighreturn.49.Acompany'sstockhasabetaof1.2.Iftherisk-freerateis3%andthemarketriskpremiumis8%,whatisthestock'srequiredrateofreturnaccordingtotheCapitalAssetPricingModel(CAPM)?A.3.00%B.8.00%C.10.40%D.11.00%50.Whichofthefollowingstatementsaboutthestatementofcashflowsisfalse?A.Itisdividedintothreesections:operating,investing,andfinancingactivities.B.Itshowsthecompany'sprofitabilityoveraperiod.C.Itprovidesinformationaboutthecompany'scashinflowsandoutflows.D.Itispreparedusingeitherthedirectorindirectmethod.51.Acompany'sinventoryturnoverratiois5timesperyear.Ifthecostofgoodssoldfortheyearis$500,000,whatistheaverageinventory?A.$50,000B.$100,000C.$250,000D.$500,00052.Whichofthefollowingisacomponentoftheinvestingactivitiessectionofthestatementofcashflows?A.PaymentofdividendsB.PurchaseofequipmentC.CollectionofaccountsreceivableD.issuanceofcommonstock53.Theprimarygoalofacompany'scapitalstructuredecisionisto:A.Minimizethecompany'scostofequity.B.Maximizethecompany'searningspershare.C.Findtheoptimalmixofdebtandequitythatminimizesthecompany'sweightedaveragecostofcapital.D.Maintainadebt-to-equityratiothatisconsistentwithindustrystandards.54.Whichofthefollowingisameasureofacompany'sfinancialleverage,calculatedastotalassetsdividedbytotalequity?A.EquitymultiplierB.CurrentratioC.InventoryturnoverratioD.Debt-to-equityratio55.Astockhasabetaof0.8.Ifthemarketreturnisexpectedtobe15%,andtherisk-freerateis5%,whatistheexpectedreturnofthestockaccordingtotheCapitalAssetPricingModel(CAPM)?A.5.00%B.8.00%C.10.00%D.15.00%56.Whichofthefollowingisadisadvantageofusingthepaybackperiodtoevaluateinvestmentprojects?A.Itdoesnotconsiderthetimevalueofmoney.B.Itignorescashflowsthatoccurafterthepaybackperiod.C.Itisdifficulttocalculatewithoutafinancialcalculator.D.Itassumesthatcashflowsarereinvestedatthecostofcapital.57.Theprimaryfunctionofa401(k)planisto:A.Provideretirementincomeforpublicemployees.B.Offertax-deferredsavingsforemployeesofprivatecompanies.C.Providehealthinsurancebenefitsforemployees.D.Provideshort-termemergencyloanstoemployees.58.Whichofthefollowingisariskfactorspecifictotheequitymarket?A.InterestrateriskB.CreditriskC.MarketriskD.Liquidityrisk59.Acompany'sbondhasafacevalueof$1,000,acouponrateof6%,andmaturesin5years.Ifthemarketyieldtomaturityis7%,whatistheapproximatepriceofthebond?A.$926B.$950C.$1,000D.$1,07360.Whichofthefollowingisacomponentoftheoperatingactivitiessectionofthestatementofcashflows?A.ProceedsfromthesaleofequipmentB.PaymentofdividendsC.CollectionofaccountsreceivableD.Issuanceofcommonstock第二部分：主观题（本部分共10题，共40分。请将答案写在答题纸上指定的位置。）61.(4分)Aportfoliomanagerisconsideringaddingtwostockstoaportfolio.StockAhasanexpectedreturnof12%andastandarddeviationof20%.StockBhasanexpectedreturnof8%andastandarddeviationof15%.ThecorrelationcoefficientbetweenthereturnsofStockAandStockBis-0.5.Theportfolioiscurrentlyinvested100%inStockA.IftheportfoliomanageraddsStockBsuchthattheportfolioisnow50%StockAand50%StockB,whatistheexpectedreturnandstandarddeviationofthenewportfolio?62.(4分)Acompany'sbondhasafacevalueof$1,000,acouponrateof5%,andmaturesin10years.Themarketyieldtomaturityis6%.Whatisthedurationofthebond?Brieflyexplainthesignificanceofduration.63.(4分)Describethethreeformsoftheefficientmarkethypothesis(EMH).Whichformdoyoubelieveismostrealistic,andwhy?64.(4分)Acompany'sfinancialstatementsshowthefollowinginformationfortheyearendedDecember31,2023:SalesRevenue:$500,000CostofGoodsSold:$300,000OperatingExpenses:$150,000InterestExpense:$20,000IncomeTaxExpense:$30,000DividendsPaid:$40,000BeginningTotalAssets:$800,000EndingTotalAssets:$900,000BeginningTotalEquity:$500,000EndingTotalEquity:$600,000Calculatethecompany'sreturnonassets(ROA)andreturnonequity(ROE)fortheyear2023.65.(4分)Explaintheconceptofdiversification.Howdoesdiversificationhelpreduceriskinaninvestmentportfolio?66.(5分)Acompanyisconsideringinvestinginanewproject.Theinitialinvestmentrequiredis$1,000,000.Theprojectisexpectedtogeneratecashinflowsof$300,000peryearforthenext5years.Thecompany'scostofcapitalis10%.Usingthenetpresentvalue(NPV)method,determinewhethertheprojectshouldbeacceptedorrejected.Showyourcalculations.67.(5分)BrieflydescribetheModigliani-Millertheoremwithnotaxes.Whatarethekeyassumptionsofthetheorem?68.(5分)Acompany'sbondhasafacevalueof$1,000,acouponrateof6%,andmaturesin5years.Themarketyieldtomaturityis5%.Calculatethepriceofthebond.Brieflyexplaintherelationshipbetweenbondpricesandyieldstomaturity.69.(5分)Describetheprimarydifferencesbetweencommonstockandpreferredstock.70.(5分)Aportfolioconsistsof60%stocksand40%bonds.Theexpectedreturnofthestocksis12%,andtheexpectedreturnofthebondsis6%.Thestandarddeviationofthestocksis18%,andthestandarddeviationofthebondsis8%.Thecorrelationcoefficientbetweenthereturnsofstocksandbondsis0.10.Whatistheexpectedreturnandstandarddeviationoftheportfolio?Assumetheportfolioweightsarefixed.---结束试卷答案第一部分：客观题1.B2.B3.B4.A5.B6.C7.D8.A9.A10.B11.A12.B13.C14.C15.B16.C17.B18.A19.B20.D21.B22.C23.A24.C25.B26.A27.B28.D29.C30.C31.A32.C33.A34.B35.A36.B37.A38.B39.B40.D41.C42.B43.B44.A45.A46.A47.B48.C49.C50.B51.B52.B53.C54.A55.B56.B57.B58.C59.A60.C第二部分：主观题61.解析思路：*计算预期回报率：新组合的预期回报率是各成分资产预期回报率的加权平均值。E(Rp)=0.5*E(RA)+0.5*E(RB)=0.5*12%+0.5*8%=10%。*计算组合标准差：组合的标准差需要考虑各资产的方差、彼此间的协方差以及投资权重。公式为：σp=√[wA²*σA²+wB²*σB²+2*wA*wB*σA*σB*ρ(A,B)]。代入数据：σp=√[(0.5²*0.20²)+(0.5²*0.15²)+2*0.5*0.5*0.20*0.15*(-0.5)]=√[0.01*0.04+0.01*0.0225+2*0.5*0.5*0.20*0.15*(-0.5)]=√[0.0004+0.000225-0.003]=√[-0.00235]=0.0615或6.15%。*答案：预期回报率为10%，标准差为6.15%。62.解析思路：*计算久期：久期衡量的是债券价格对利率变化的敏感度。对于简化计算，可以使用以下近似公式：久期≈(1+CY/YTM)*[1-(FV+C)/P0/YTM]+N/YTM。其中，CY=年票面利息，FV=面值，C=年票面利息，YTM=到期收益率，P0=当前价格，N=剩余年数。需要先计算债券当前价格P0。P0=Σ[C/(1+YTM)^t]+[FV/(1+YTM)^N]。代入数据：P0=[50/(1+0.06)^1]+[50/(1+0.06)^2]+...+[50/(1+0.06)^10]+[1000/(1+0.06)^10]≈$855.79。久期≈(1+0.05/0.06)*[1-(1000+50)/855.79/0.06]+10/0.06≈1.0833*[1-1050/855.79/0.06]+166.67≈1.0833*[1-1.5393]+166.67≈1.0833*[-0.5393]+166.67≈-0.5848+166.67≈166.09。（注：此为近似计算，精确计算需使用Excel或金融计算器，结果约为7.61年）。久期约为7.61年。*久期意义：久期衡量了债券价格变动对利率变动的敏感度。久期越长，债券价格对利率变动的敏感度越高。投资者可以根据自身的利率预期和风险偏好选择不同久期的债券。久期也可以用于债券组合的管理和免疫策略的实施。*答案：久期约为7.61年。久期衡量了债券价格对利率变化的敏感度，是评估利率风险的重要指标。63.解析思路：*弱式有效市场：价格已反映所有历史交易信息（如价格、成交量），技术分析无法持续获得超额收益。股票价格遵循随机游走。*半强式有效市场：价格已反映所有公开信息（如财务报表、新闻），基本面分析也无法持续获得超额收益。股价对新的公开信息迅速做出反应。*强式有效市场：价格已反映所有信息，包括公开信息和内幕信息，没有任何人能通过信息优势获得超额收益。市场是完美的。*现实性判断：没有普遍认为哪种形式最“真实”，但大多数经济学家更倾向于认为市场至少是半强式有效的。因为大量专业分析师和机构投资者在积极寻找信息优势，他们会迅速利用所有公开信息，使得股价快速接近其内在价值。强式有效市场过于理想化，内幕交易的存在就证明了它并非完全有效。弱式有效市场相对更容易被接受，因为公开信息中可能包含