On August 20, Advance Auto Parts declined 25.9% in regular trading, trading at approximately $41.60 per share, with turnover of $522 million.

The sharp selloff followed the company's fiscal Q2 earnings report released pre-market. While adjusted EPS of $1.03 beat the consensus estimate of $0.81 by 27.16%, representing a 49.28% year-over-year increase from $0.69, revenue of $2.000 billion missed the $2.039 billion estimate. Additionally, the company issued full-year adjusted EPS guidance of $2.60 to $3.30, a notably wide range with a low end well below the FactSet consensus of $2.95, raising concerns about the sustainability of the turnaround trajectory.

Analysts at RBC Capital Markets had previously flagged tougher comparable sales in the second half as a real test of the company's fiscal outlook, noting that tax refund benefits were diminishing and the company would face stiffer year-over-year comparisons. Within the Automotive Retail sector, AutoZone fell 4.35% and O'Reilly declined 2.89%, reflecting broad sector weakness.

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