NEW YORK (TheStreet) -- Shares of Comcast traded to an all-time intraday high of $60.85 on April 23 just before the company withdrew its offer to buy Time Warner Cable . Comcast will report its quarterly results before the opening bell on Monday and analysts expect the company to earn 74 cents a share for its quarter ended in March. Let's look at the daily and weekly charts for Comcast and provide the key technical levels at which to buy on weakness and the key technical levels at which to sell on strength. Must Read: 5 Stocks Warren Buffett Is Selling Investors not familiar with technical analysis should begin with the notion that a price chart for a stock shows a road map of past price performance, which provides guidance for predicting future share price direction. Here's how to read a daily chart.