NEW YORK (TheStreet) - AutoZone (AZO) - Get Report, which is scheduled to report its quarterly results before the opening bell on Tuesday, has beat or matched earnings estimates for five consecutive quarters. The company has an eight-year string of double-digit earnings-per-share growth with a policy of adding new stores and buying back shares.

Analysts estimate that AutoZone, an auto-parts retailer that has almost 5,000 stores in the U.S., will report earnings of $6.37 a share for its fiscal second quarter that ended on Saturday.

Let's take a look at AutoZone's performance measures, key trading levels and analysis of daily and weekly charts.

AutoZone($642.68) gained 30% in 2014 and is up 3.8% so far in 2015. During the past two years, the stock has been above its 200-day simple moving average except for the brief period between Sept. 22 and Oct. 22, 2014. Since April 2013, the stock is up 74%. It reached an all-time intraday high of $651.95 on Friday.

Investors looking to buy AutoZone on weakness following its earnings report should enter good 'til canceled limit orders to buy at semiannual and annual technical levels of $620.19 and $570.13, respectively. Investors looking to book profits should enter a good 'til canceled limit order to sell on strength at a quarterly technical level of $654.98.

Let's take a look at the daily chart for AutoZone.

Courtesy of MetaStock Xenith

The daily chart for AutoZone ($642.68) shows a solid uptrend that tracked the 200-day simple moving average (green line) since April 2013 when the average was $372.01. The 200-day SMA provided a buying opportunity between Sept. 22 and Oct. 24, when the average was rising from $520.37 to $525.20.

The stock is solidly above its 50-day (blue line) and 200-day simple moving averages of $611.12 and $555.44, respectively. The 50-day SMA will be a key level to hold on a negative reaction to earnings.

Let's take a look at the weekly chart for AutoZone.

Courtesy of MetaStock Xenith

The weekly chart for AutoZone will be positive but overbought given a close this week above its key weekly moving average (red line) at $613.87. Note that the stock's weekly momentum reading is rising at 79.91, which is just below the overbought threshold of 80.00. The stock will thus have an overbought condition this week.

Also note that AutoZone has been above its 200-week simple moving average (green line) since the end of November 2008 when the average was $111.04.

AutoZone is clearly a momentum stock and will keep that status until there's a weekly close below its key weekly moving average of $613.87 and rising each week.

This article is commentary by an independent contributor. At the time of publication, the author held no positions in the stock mentioned.

Follow @Suttmeier