最后表扬一下苏州考场，伯伯阿姨们超级温柔的~~作者: 蜂蜜冰拿铁 时间: 2017-5-6 19:07
感谢分享，是否记得逻辑狗作者: KEN_Locke 时间: 2017-5-6 20:29
楼主还记得作文和逻辑吗作者: 600分的学校要求 时间: 2017-5-6 21:49
There are many such models, but by far the most widely used is called VaR — Value at Risk. Built around statistical ideas and probability theories that have been around for centuries, VaR was developed and popularized in the early 1990s by a handful of scientists and mathematicians — “quants,” they’re called in the business — who went to work for JPMorgan. VaR’s great appeal, and its great selling point to people who do not happen to be quants, is that it expresses risk as a single number, a dollar figure, no less.
VaR isn’t one model but rather a group of related models that share a mathematical framework. In its most common form, it measures the boundaries of risk in a portfolio over short durations, assuming a “normal” market. For instance, if you have $50 million of weekly VaR, that means that over the course of the next week, there is a 99 percent chance that your portfolio won’t lose more than $50 million. That portfolio could consist of equities, bonds, derivatives(衍生性金融商品) or all of the above; one reason VaR became so popular is that it is the only commonly used risk measure that can be applied to just about any asset class. And it takes into account a head-spinning variety of variables, including diversification, leverage and volatility（波动，波幅）, that make up the kind of market risk that traders and firms face every day.
Another reason VaR is so appealing is that it can measure both individual risks — the amount of risk contained in a single trader’s portfolio, for instance — and firmwide risk, which it does by combining the VaRs of a given firm’s trading desks and coming up with a net number. Top executives usually know their firm’s daily VaR within minutes of the market’s close.
Risk managers use VaR to quantify their firm’s risk positions to their board. In the late 1990s, as the use of derivatives was exploding, the Securities and Exchange Commission ruled that firms had to include a quantitative disclosure of market risks in their financial statements for the convenience of investors, and VaR became the main tool for doing so. Around the same time, an important international rule-making body, the Basel Committee on Banking Supervision, went even further to validate VaR by saying that firms and banks could rely on their own internal VaR calculations to set their capital requirements. So long as their VaR was reasonably low, the amount of money they had to set aside to cover risks that might go bad could also be low
楼主请问你考的那篇VAR是这篇吗作者: 呆呆坑坑 时间: 2017-5-7 06:57
恭喜楼主，楼主v37最后是710还是720730呢作者: MCJKF 时间: 2017-5-7 12:06
感谢分享！ 作者: 阿达111 时间: 2017-5-7 12:59
感谢分享！ 作者: 一床空悬 时间: 2017-5-7 13:11
4楼哪里搞来的....作者: 一屉小笼包 时间: 2017-5-8 16:43