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The DataApple Inc. (AAPL):
January 16, 1997 – January 7, 20092,920 Days
IBM (IBM):April 9, 1997 – January 7, 20092,925 Days
Proctor Gamble Co (PG):April 9, 1997 – January 7, 20092,924 Days
Price data available every minute from 9:35 AM to 3:59 PM for each trading day Based on volatility signature plots, an interval of 11 minutes was chosen
OutliersApple Inc. (AAPL):
January 6, 1998 11:04 AMJanuary 10, 2005 12:44PM announcement of stock split
IBM (IBM):No clear outliers
Proctor Gamble Co (PG):January 20, 2000 1:37PM announcement of stock splitJuly 1, 2003 1:18PM
For this initial analysis, set 0bvious return outliers to zero.
(Rationale: Stock splits, revolutionary product reveal, etc. do not happen that often; however, this should not be completely ignored in later analysis)
AAPL Jump Detection: Tri-Power
1% Significance Level = 4 jump days 5% Significance Level = 9 jump days 10% Significance Level = 33 jump days
IBM Jump Detection: Tri-Power
1% Significance Level = 0 jump days 5% Significance Level = 0 jump days 10% Significance Level = 25 jump days
PG Jump Detection: Tri-Power
1% Significance Level = 0 jump days 5% Significance Level = 7 jump days 10% Significance Level = 28 jump days
AAPL Jump Detection: Quad-Power
1% Significance Level = 17 jump days 5% Significance Level = 49 jump days 10% Significance Level = 107 jump days
IBM Jump Detection: Quad-Power
1% Significance Level = 0 jump days 5% Significance Level = 10 jump days 10% Significance Level = 44 jump days