TLDRAutoZone’s fiscal Q2 revenue reached $4.27 billion, falling short of the $4.31 billion forecastEarnings per share of $27.63 exceeded the $27.15 estimate but declined from $28.29 a year earlierComparable store sales increased just 3.3%, significantly below the anticipated 5.6% growthShares plummeted approximately 8.6% during premarket hours on TuesdayOperating income declined 1.2% versus the prior year, totaling $698.5 millionShares of AutoZone experienced a sharp decline in premarket trading Tuesday following the auto parts retailer’s fiscal second-quarter earnings report, which delivered an earnings beat but disappointed on revenue and comparable sales metrics.AutoZone, $AZO, Q2-26.Margins pressured, comps solid. Adj. EPS: $27.63 Revenue: $4.27B Net Income: $468.86MGross margin -137 bps on LIFO charge, EBIT -1.2%.Commercial sales +9.8%, share gains intact. pic.twitter.com/s0YYGzzEUU— EarningsTime (@Earnings_Time) March 3, 2026The stock plunged roughly 8.6% to approximately $3,550 in early trading. This marks a significant reversal for shares that had climbed 15% year-to-date leading up to Monday’s closing bell.AutoZone, Inc., AZOThe company reported quarterly revenue of $4.27 billion. Wall Street analysts had projected $4.31 billion. While the shortfall appears modest, investors reacted negatively.On the earnings front, adjusted EPS registered at $27.63, topping the Street’s consensus of $27.15. However, this figure represents a decline from the $28.29 reported in the year-ago period.The most significant disappointment came from comparable store sales, which increased 3.3% on a constant-currency basis. Analysts had anticipated growth of 5.6%. This substantial gap drove the selloff.Total net sales climbed 8.1% year-over-year, appearing healthy on the surface — yet the comparable sales performance reveals underlying weakness.Domestic vs. InternationalDomestic comparable store sales advanced 3.4% in constant currency terms. International locations posted 2.5% same-store sales growth.CEO Phil Daniele commented on the international performance. “While our international sales, in constant currency, were slightly below our expectations, we believe our market share continues to grow as we outpace our competition in both Mexico and Brazil,” he stated.Daniele also praised employees for their contributions. “I want to thank our AutoZoners across the company for delivering solid financial results this past quarter.”Operating Profit Takes a DipOperating income totaled $698.5 million for the quarter, representing a 1.2% decrease compared to last year’s corresponding period.While the decline appears modest, when paired with the disappointing comparable sales performance, it leaves investors with limited positive takeaways.AutoZone had been highlighted as a Barron’s stock selection last March, and the 15% year-to-date gain prior to this earnings release had elevated expectations.The quarterly results weren’t catastrophic. The company beat on earnings per share, grew total revenue, and sustained its competitive position in critical international regions.However, missing comparable sales expectations by more than 200 basis points presents a challenge that’s difficult to overlook.The premarket stock movement captures investor sentiment. An 8.6% earnings-day decline represents a substantial pullback for shares that had been performing strongly.AutoZone maintains retail locations throughout the United States, Mexico, and Brazil, with same-store sales serving as a critical performance indicator for the chain.The 3.3% comparable sales figure represents a deceleration from analyst projections, sparking concerns about demand momentum in the near term.The company’s fiscal second quarter concluded in late February 2026.AutoZone shares traded at $3,550 during premarket activity Tuesday, down significantly from Monday’s closing price of roughly $3,886.The post AutoZone (AZO) Stock Plunges 9% as Comparable Store Sales Disappoint in Q2 appeared first on Blockonomi.