HudBay Minerals (HBM) closed at $20.58, down 7.38 percent, extending a 14.11 percent loss over the prior period. The selloff has outpaced both the Basic Materials sector and the broader market, creating a valuation setup ahead of earnings on Nov. 12.

Consensus estimates project third-quarter EPS of $0.35, a 1,066 percent increase year-over-year, with revenue forecast at $815.74 million, up 135 percent. Full-year EPS is expected to reach $1.39, up 107 percent, on revenue of $2.88 billion, up 30 percent.

HBM trades at a forward P/E of 15.96, a discount to the Mining - Miscellaneous industry average of 16.72. The stock's PEG ratio of 0.4 also undercuts the industry average of 0.84, suggesting the market is pricing in slower growth than consensus projects. The Zacks Rank is #3 (Hold); consensus EPS estimates have remained unchanged over the past month.

The Mining - Miscellaneous industry ranks 163rd among 250 industries tracked by Zacks, placing it in the bottom 35 percent. Historically, top-50-percent industries outperform bottom-half peers by a 2-to-1 ratio, a headwind for the entire group. Investors should monitor whether HBM's earnings beat on Nov. 12 can reignite momentum in a sector facing structural weakness.