
212 ◾ Xiande Zhao, Yina Li, Barbara B. Flynn, and Stephen Ng
China and the United States. e results of the analysis of abnormal returns and the
post-announcement stock price performance of the 60-day cumulative abnormal
returns for these six companies are provided in Tables 13.6 and 13.7.
13.5.1 Effects on the Companies with Tainted Milk
e abnormal returns before the announcement day (Day −5 to −1) varied ran-
domly and without statistical signicance, indicating that they were driven by
chance. us, the melamine-tainted milk incident was unanticipated before the
recall announcement. Table 13.6 shows that, on Day 1, all of the dairy companies ...