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Why Advance Auto Parts (AAP) Shares Are Trading Lower Today

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What Happened?

Shares of auto parts and accessories retailer Advance Auto Parts (NYSE:AAP) fell 6.1% in the morning session after competitor AutoZone reported first-quarter results that signaled potential weakness across the auto parts retail sector. While AutoZone's net sales grew, its gross margin compressed to 51.0%, and its diluted earnings per share (EPS) declined to $31.04. The drop in profitability for a major industry player raised concerns among investors about sector-wide challenges. This kind of pressure on margins and earnings at a key competitor often suggests that other companies in the same market, like Advance Auto Parts, could face similar headwinds.

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What Is The Market Telling Us

Advance Auto Parts’s shares are extremely volatile and have had 33 moves greater than 5% over the last year. In that context, today’s move indicates the market considers this news meaningful but not something that would fundamentally change its perception of the business.

The previous big move we wrote about was 4 days ago when the stock gained 2.5% on the news that positive sentiment in the auto parts sector was sparked by an analyst's favorable view on competitor AutoZone (AZO). Baird initiated coverage on AutoZone with an Outperform rating. The research firm described AutoZone as an "exceptional business" with strong sales and impressive profitability. Baird also noted that improved parts availability helped drive faster growth in the commercial segment. This positive assessment of a major industry player suggested a healthy market environment, which appeared to lift the shares of peers like Advance Auto Parts.

Advance Auto Parts is flat since the beginning of the year, and at $48.34 per share, it is trading 27.3% below its 52-week high of $66.50 from July 2025. Investors who bought $1,000 worth of Advance Auto Parts’s shares 5 years ago would now be looking at an investment worth $306.02.

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