From 1/3/05 - 1/6/06, re. $compx. (general data, more details to follow)
Question: What's the deal with Monday morning gaps in the $compx?
53 Monday mornings from 1/3/05 to 1/6/06. (If market closed on Monday, Tuesday=Monday.)
A. 53 Mondays/Tuesdays.
- Gap Up on 32 days. On 13 of these 32 Gap Up days, $compx closed below the gap.
- Gap Down on 21 days. On 12 of these 21 Gap Down days, $compx closed above the gap.
Average gap on first days of the week: +0.063%
Cumulative return (friday close-next week's open): +3.37%
Average gap for non-first days of the week: +0.0446%
Cumulative return (close-next day's open, ex. Mondays): +9.38% (naturally, more days included = more extreme returns)
Average change from open to close on first days of the week: +0.0918%
Cumulative return (open to close on the first days of the week): +4.83%
Average change from open to close on non-first days of the week: -0.0524%
Cumulative return (open to close on non-first days of the week): -10.59%