Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The AfterClose (A) and BeforeOpen (B) events are analyzed separately. Blue dots denote the polarity of the events on day −1, and red dots on day 0. The corresponding regressions are represented by solid lines.
