Noticed KLAC shares took a pretty hard hit after their Q2 earnings - down over 15% in a single day. The drop seems justified though, given their Q3 guidance came in a bit soft. They're looking at $3.35B in revenue next quarter, and honestly the product mix doesn't look that impressive sequentially. Plus DRAM costs are eating into margins, and tariff headwinds are adding roughly 100 basis points of pressure. Supply chain issues aren't helping either.

That said, I'm not convinced this share drop tells the whole story. Over the past year KLAC has absolutely crushed it - up 90.6% while the broader tech sector only gained 23%. Even stacked against peers like Applied Materials (up 81.9%) and ASML (up 87%), KLAC's been the stronger performer. The company's sitting in a really sweet spot with advanced packaging and AI infrastructure demand.

The market for advanced packaging alone is worth $11 billion and growing faster than traditional wafer fab equipment. KLAC's process control tech is basically essential as chip designs get more complex, especially with all the custom silicon work hyperscalers are pushing. Core WFE is expected to hit the low $120 billion range in 2026, and advanced packaging should reach around $12 billion.

Valuation-wise yeah, KLAC isn't cheap - trading at 33.83X forward P/E versus the sector average of 26X. But when you factor in the earnings growth (consensus expects 9.9% revenue growth for FY2026) and the structural tailwinds from AI and advanced packaging, the premium doesn't feel unreasonable. The share drop looks like a buying opportunity if you believe in the longer-term AI and semiconductor cycle.

Technically the stock is still above both its 50-day and 200-day moving averages, so the longer-term trend remains bullish despite this recent pullback. Worth monitoring if you're thinking about adding to a position on weakness.