the abnormal returns and volatility changes of those component stocks. The empirical results show that, after the removal … volatility. To reduce the possible impact on volatility, the authorities may take the activity of margin transactions into …

bonds are the provinces with higher risk premia, or the provinces with greater volatility of risk premia, or the provinces … are not obvious in the provinces with lower risk premia, lower volatility of risk premia and less issued Chengtou bonds …。债券平均规模与债券剩余期限的网络节点效应对债券未来风险溢价也有较大影响。从实证结果的政策含义上来看：一方面，准确、全面地披露城投债信息、管控城投债系统性风险，有助于维系债券市场价格信号的有效性，稳定债券市场；另一方面，在控制城投债风险溢价的过程中，政府需要重点关注风险溢价波动较高、债券发行数量较多的省份，同时也需要时刻关注债券的平均规模与剩余期限，在各省实行差异化的适应性金融政策，对深化金融供给侧结构性改革，维护脱贫攻坚成果具有重要意义。English abstract: As a barometer to measure the risk, the risk premia of bonds imply the risk of the bond market. When using the …

futures are not treated as financial derivatives, naïve hedge outperforms complex models. If the futures pricing theory is …

asset pricing model (CAPM), the arbitrage pricing theory (APT), the consumption capital asset pricing model (CCAPM), the …

-announcement volatility of stock returns is not significantly different from the post-announcement volatility. The results also indicate that …