证券套利是指证券商利用两个证券市场上某种证券的价差,或利用同一市场某种证券的现货价与期货价之差,买进卖出,获取差额收益的行为。套利者利用异处差价,在价格低的地方买进,在价格高的地方卖出。一般情况下,只要价差大于交易费用(如手续费、旅费等),总是能够获利的。
上周它冻结了一些匿名投资者500万美元利润并提起了诉讼,原因是他们在德州事业(证券代码TXU)被收购的消息发布前,通过期权市场进行套利活动。
Last weekit filed a suit against unknown investors who had profited in theoptions market before the announcement of a takeover of TXU, the Texanutility.
当协方差矩阵非正定时,要么存在套利机会,要么存在有效子集(即有多余的证券存在)。
We concluded that the covariance matrix is nonpositive definite, there is either arbitrage opportunity or efficient subset.
套利定价决定市场价格的金融证券给予的无风险“银行”考虑存款和贷款在一个已知的利息。
Arbitrage pricing determines the market price of financial securities given a risk-free "bank" that takes deposits and lends at a known interest rate.
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