西安财经学院学报
西安財經學院學報
서안재경학원학보
Journal of Xi‘an Institute of Finance & Economics
2008年
3期
68~73
,共null页
企业债券 市场波动性 ARMA模型 GARCH模型
企業債券 市場波動性 ARMA模型 GARCH模型
기업채권 시장파동성 ARMA모형 GARCH모형
enterprise bonds; market volatility; ARMA model; GARCH model
基于交易所企债指数,利用ARMA-GARCH模型分析市场波动性。结果表明ARMA(1,1)-GARCH(1,1)模型可以合理解释企业债券市场波动存在的持续性、丛集性和杠杆效应。场外冲击对条件方差的影响具有持久性,反向冲击比等量的正向冲击会导致更高的下一期的条件方差。EGARCH(1,1)-M模型回归结果表明,市场存在正的风险溢价,但是预期条件波动对预期收益仅有微弱补偿。
基于交易所企債指數,利用ARMA-GARCH模型分析市場波動性。結果錶明ARMA(1,1)-GARCH(1,1)模型可以閤理解釋企業債券市場波動存在的持續性、叢集性和槓桿效應。場外遲擊對條件方差的影響具有持久性,反嚮遲擊比等量的正嚮遲擊會導緻更高的下一期的條件方差。EGARCH(1,1)-M模型迴歸結果錶明,市場存在正的風險溢價,但是預期條件波動對預期收益僅有微弱補償。
기우교역소기채지수,이용ARMA-GARCH모형분석시장파동성。결과표명ARMA(1,1)-GARCH(1,1)모형가이합리해석기업채권시장파동존재적지속성、총집성화강간효응。장외충격대조건방차적영향구유지구성,반향충격비등량적정향충격회도치경고적하일기적조건방차。EGARCH(1,1)-M모형회귀결과표명,시장존재정적풍험일개,단시예기조건파동대예기수익부유미약보상。
ARMA-GARCH model is used to simulate Chinese enterprise bond markets. Empirical result shows that ARMA(1,1) - GARCH(1,1) model provide a successfully simulation by explaining strongly the volatility clustering, durative and leverage effects in enterprise bond markets. The outside impact has persistent effect to the conditional variance, and the negative impact would bring higher conditional variance than the equivalent positive one. Regression results of EGARCH(1,1)-M indicate that market exists the positive risk premium, but expected returns has low compensation to expected risk.