1.今天你阅读到的有价值的全文内容链接
Volatility Trading (期权波动率交易).
https://bbs.pinggu.org/thread-3389027-1-1.html
2.今天你阅读到的有价值的内容段落摘录
(1) Any risk measure based on historical returns will show only what has happened, not what could happen.
(2) In fact past returns of hedge funds seem to have almost no predictive power for their future returns.
(3) The sampling error in volatility. volatility is an unobervable quantity that we can only estimate.
Multiplying the daily return by 20 gives a useful "quick and dirty" estimate of annualized volatility.
3.今天你阅读到的有价值信息的自我思考点评感想
事实上,真正的波动率不可观察,只可估计,而估计总是存在误差的。在交易上,期权交易员通常用日间的收益(daily return)*20来对年化波动率给出快速的预估。
4.昨日你阅读的时间量(小时计算,如0.5小时)
1小时
5.你参与活动至今的总时间量(小时计算,如20小时)
21小时