Examine the accompanying figure, which presents cu- mulative abnormal returns both before and after dates on which insiders buy or sell shares in their firms. How do you interpret this figure? What are we to make of the pattern of CARS before and after the event date?

Essentials Of Investments
11th Edition
ISBN:9781260013924
Author:Bodie, Zvi, Kane, Alex, MARCUS, Alan J.
Publisher:Bodie, Zvi, Kane, Alex, MARCUS, Alan J.
Chapter1: Investments: Background And Issues
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21. Examine the accompanying figure, which presents cu-
mulative abnormal returns both before and after dates
on which insiders buy or sell shares in their firms. How
do you interpret this figure? What are we to make of
the pattern of CARS before and after the event date?
Cumulative Daily Average Prediction Errors (%)
O
3
2
-1-
-2-
-200
-100
O
100
Event Day Relative to Insider Trading Day
Sales
Purchases
200
300
Transcribed Image Text:21. Examine the accompanying figure, which presents cu- mulative abnormal returns both before and after dates on which insiders buy or sell shares in their firms. How do you interpret this figure? What are we to make of the pattern of CARS before and after the event date? Cumulative Daily Average Prediction Errors (%) O 3 2 -1- -2- -200 -100 O 100 Event Day Relative to Insider Trading Day Sales Purchases 200 300
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