Quantitative strategy-1
(Based on pure historical data)

1. Statistics of Monday being the highest/lowest of week = __%

2. If before Thursday, Monday is highest/lowest then how likely that Thursday going to trade below Wednesday's low = __%

3. If Thursday and Friday down consecutively then will there be gap down on Monday = __%

4. How many gap up/gap down happen in a year = __% and how many of them filled on the same day = __%, within 2 days = __% and within 3 days = __%

5. How many times high/low of the day is made within 15min,30 min,1hr and 1(1/2)hr of trading session = __, __, __, __%

I will leave the statistics for you to calculate.

You can create many successful strategies from above observations.