总体来说,事件研究按照计算正常收益的方法分为两种形式,一种形式基于市场收益,例如S&P500,来计算超额收益;另外一种形式基于每种证券自身的正常收益,来计算超额收益。
我的数据大致如下:
company year date return event-date
1 1998 1998-01-01 0.56 No event on today.
1 1998 1998-01-02 0.58 No event on today.
1 1998 1998-01-03 0.50 The event is on today.
1 1998 1998-01-04 0.50 No event on today.
1 1998 1998-01-05 0.52 No event on today.
....
2 1998 1998-01-05 0.46 No event on today.
2 1998 1998-01-06 0.38 No event on today.
2 1998 1998-01-07 0.60 The event is on today.
2 1998 1998-01-08 0.20 No event on today.
2 1998 1998-01-09 0.82 No event on today.
在我所进行的这项研究里,将不使用市场收益的概念,那么我只能应用基于每种证券自身的正常收益来进行事件研究,请问谁有SAS程序,或者提哦那个一点思路?非常感谢。
下面提供一些有关事件研究的书籍/文章,以飨众人。
下面这门书有两章讨论事件研究。书内包含SAS代码。
Boehmer, E., J.P. Broussard, and J.-P. Kallunki, Using SAS in financial research. 2002, Cary, N.C.: SAS Publishing. viii, 165 p.
下面这本书有一章讨论事件研究。书内包含EXCEL解说。
Seiler, M.J., Performing financial studies : a methodological cookbook. 2004, Upper Saddle River, NJ: Prentice Hall. xiii, 432 p.
下面这两个文章讨论事件研究。
Brown, S. and J. Warner, Using Daily Stock Returns: The Case of Event Studies. Journal of Financial Economics, 14:3–31, 1985.
Brown, S.J. and J.B. Warner, Measuring Security Price Performance. Journal of Financial Economics, 1980. 8(3): p. 205-258.