Every Friday the Investors Business Daily publishes 85-85 list. Which basically is a list of stocks with RPS rating of 85 and EPS rating of 85 and which are within certain percentage of 52 weeks high. Some of the stocks have black border and that indicates their chart pattern as per IBD philosophy is ideal for entry.
Now if you are motivated enough to understand the role played by the earnings in these stocks, what you can do is, go back and plot the past earnings dates on these set of stocks. Many charting programs allow you to do this. Bigcharts is one free program which has this feature. However I have observed that sometime Bigcharts dates are 2-3 days late.
If you plot the earnings data on charts, what you will find is many of the chart patterns are predated or post dated by few days of earnings. So chart patterns which happen few days or before earnings or few days after earnings are more successful. In essence a cup and handle which forms pre earnings will often breakout on earnings day.
Earlier I use to do this plotting regularly every week. Now I do not do this. But if you are technical analysis and chart pattern junkie and if you study this in detail, you can significantly improve your chances of success by picking chart patterns only during certain time. You will also find patterns like a stock reacting to earnings one quarter, not reacting next corner and then breaking out just before or after third earnings.