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題名 A Nonparametric Test of a Strong Leverage Hypothesis
作者 顏佑銘
Linton, Oliver;Whang, Yoon-Jae;Yen, Yu-Min
貢獻者 國貿系
關鍵詞 Distribution function; Leverage effect; Gaussian process
日期 2016-09
上傳時間 17-Apr-2017 12:20:50 (UTC+8)
摘要 The so-called leverage hypothesis is that negative shocks to prices/returns affect volatility more than equal positive shocks. Whether this is attributable to changing financial leverage is still subject to dispute but the terminology is in wide use. There are many tests of the leverage hypothesis using discrete time data. These typically involve fitting of a general parametric or semiparametric model to conditional volatility and then testing the implied restrictions on parameters or curves. We propose an alternative way of testing this hypothesis using realized volatility as an alternative direct nonparametric measure. Our null hypothesis is of conditional distributional dominance and so is much stronger than the usual hypotheses considered previously. We implement our test on individual stocks and a stock index using intraday data over a long span. We find only very weak evidence against our hypothesis.
關聯 Journal of Econometrics, 194(1), 153-186
資料類型 article
DOI http://dx.doi.org/10.1016/j.jeconom.2016.02.018
dc.contributor 國貿系
dc.creator (作者) 顏佑銘zh_TW
dc.creator (作者) Linton, Oliver;Whang, Yoon-Jae;Yen, Yu-Min
dc.date (日期) 2016-09
dc.date.accessioned 17-Apr-2017 12:20:50 (UTC+8)-
dc.date.available 17-Apr-2017 12:20:50 (UTC+8)-
dc.date.issued (上傳時間) 17-Apr-2017 12:20:50 (UTC+8)-
dc.identifier.uri (URI) http://nccur.lib.nccu.edu.tw/handle/140.119/108889-
dc.description.abstract (摘要) The so-called leverage hypothesis is that negative shocks to prices/returns affect volatility more than equal positive shocks. Whether this is attributable to changing financial leverage is still subject to dispute but the terminology is in wide use. There are many tests of the leverage hypothesis using discrete time data. These typically involve fitting of a general parametric or semiparametric model to conditional volatility and then testing the implied restrictions on parameters or curves. We propose an alternative way of testing this hypothesis using realized volatility as an alternative direct nonparametric measure. Our null hypothesis is of conditional distributional dominance and so is much stronger than the usual hypotheses considered previously. We implement our test on individual stocks and a stock index using intraday data over a long span. We find only very weak evidence against our hypothesis.
dc.format.extent 3328491 bytes-
dc.format.mimetype application/pdf-
dc.relation (關聯) Journal of Econometrics, 194(1), 153-186
dc.subject (關鍵詞) Distribution function; Leverage effect; Gaussian process
dc.title (題名) A Nonparametric Test of a Strong Leverage Hypothesis
dc.type (資料類型) article
dc.identifier.doi (DOI) 10.1016/j.jeconom.2016.02.018
dc.doi.uri (DOI) http://dx.doi.org/10.1016/j.jeconom.2016.02.018