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排序方式： 共有193条查询结果，搜索用时 0 毫秒
71.
In this study, the wavelet multiscale model is applied to selected assets to hedge time-dependent exposure of an agent with a preference for a certain hedging horizon. Based on the in-sample and out-of-sample portfolio variances, the wavelet-based generalized autoregressive conditional heteroskedasticity (GARCH) model produces the lowest variances. From a utility standpoint, wavelet networks combined with GARCH have the highest utility. Finally, the wavelet-GARCH model has the lowest minimum capital risk requirements. Overall, the wavelet GARCH and wavelet networks offer improvements over traditional hedging models. 相似文献
72.
"热钱"进入的状况和影响目前正在受到国内各界的广泛关注。文章借用以指数收益推算要素敞口的方法,研究了"热钱"的典型代表———国际对冲基金在中国金融市场上的投资活动和资产分布。从全球对冲基金行业来看,尚不存在大规模投资于中国大陆市场的迹象。全球对冲基金业绩仅与中国股票市场存在较微弱的正相关关系。就大中华区而言,大陆股票、香港股票和台湾股票市场是这一地区对冲基金的主要活动场所。没有发现对冲基金在行业意义上进入中国债券、期货和房地产市场的证据。文章还分析了国际对冲基金进入中国的主要渠道和目前国内对对冲基金的监管现状,并提出有关政策建议。 相似文献
73.
模糊限制语作为模糊语言的一个重要组成部分,在交流中起着重要的作用。科技英语作为一种特殊语体要求用词准确、行文严谨,但仍有大量的模糊限制语存在于英语科技语篇中,体现出了不同的语用功能。因此,列举实例阐述了模糊限制语在科技语体中的几个语用功能,以期进一步深化对模糊限制语的功能研究。 相似文献
74.
陈兴平 《石家庄经济学院学报》1997,20(6):563-567
成本补偿是资本保值的基本前提，只有成本得到补偿，才能实现资本的增值。本文从成本补偿与资本保值增值之关系，以成本补偿的理论为基础，论述资本保值增值的现实问题，以求在历史成本计价模式下，消除物价上涨的不利因素，实现成本的足额补偿，达到资本的保值增值 相似文献
75.
股指期货交易是以股票价格指数为基础资产的标准化期货合约。交易中双方当事人取得的收益和支付的费用将改变交易双方当事人的消费能力和投资水平,从而产生相应的税收后果,应当认定为应税所得。股指期货交易应当是以风险管理权为标的的买卖合约,其收益应当认定为财产转让所得。但由于当前财产转让所得的概念尚不能涵盖风险管理权这一新型财产性权利的转让收益,应有必要构建新的课税规则以确定不同交易目的的股指期货交易的纳税义务及其课税时点等问题。 相似文献
76.
Katelijne A.E. Carbonez Van Thi Tuong Nguyen Piet Sercu 《European Financial Management》2011,17(5):806-834
We propose to use two futures contracts in hedging an agricultural commodity commitment to solve either the standard delta hedge or the roll‐over issue. Most current literature on dual‐hedge strategies is based on a structured model to reduce roll‐over risk and is somehow difficult to apply for agricultural futures contracts. Instead, we propose to apply a regression based model and a naive rules of thumb for dual‐hedges which are applicable for agricultural commodities. The naive dual strategy stems from the fact that in a large sample of agricultural commodities, De Ville, Dhaene and Sercu (2008) find that GARCH‐based hedges do not perform as well as OLS‐based ones and that we can avoid estimation error with such a simple rule. Our semi‐naive hedge ratios are driven from two conditions: omitting exposure to spot price and minimising the variance of the unexpected basis effects on the portfolio values. We find that, generally, (i) rebalancing helps; (ii) the two‐contract hedging rules do better than the one‐contract counterparts, even for standard delta hedges without rolling‐over; (iii) simplicity pays: the naive rules are the best one–for corn and wheat within the two‐contract group, the semi‐naive rule systematically beats the others and GARCH performs worse than OLS for either one‐contract or two‐contract hedges and for soybeans the traditional naive rule performs nearly as well as OLS. These conclusions are based on the tests on unconditional variance ( Diebold and Mariano, 1995 ) and those on conditional risk ( Giacomini and White, 2006 ). 相似文献
77.
78.
SONG Yun-ling JI Xin-wei 《现代会计与审计》2009,5(5):46-52,58
This paper extends the work of SONG （2008） and finds a significantly positive relation between hedge returns from accrual anomaly and market returns for Chinese A-share market. Since market returns in Chinese well-known ＂policy market＂ is more volatile than those in USA, the hedge risks in China are higher than those in USA. Additionally, higher transaction costs and one-direction trading system also prevent investors in Chinese A-share market from arbitraging on accrual anomaly. 相似文献
79.
We study the relationship between Bitcoin and commodities by assessing the ability of Bitcoin to act as a diversifier, hedge, or safe haven against daily movements in commodities in general, and energy commodities in particular. We focus on energy commodities because energy, in the form of electricity, is an essential input in the Bitcoin production. For the entire period, results show that Bitcoin is a strong hedge and a safe-haven against movements in both commodity indices. We further examine whether that ability is also present for non-energy commodities and our analysis show insignificant results when energy commodities are excluded from the general commodity index. We also account for the December 2013 Bitcoin price crash and our results reveal that Bitcoin hedge and safe-haven properties against commodities and energy commodities are only present in the pre-crash period, whereas in the post-crash period Bitcoin is no more than a diversifier. In addition to uncovering the time-varying role of Bitcoin, we highlight the dissimilarity in the dynamic correlations between the extreme downward and extreme upward movements. 相似文献
80.