Lam Research surges 154% in H1'26 as AI equipment demand fuels rally

Lam Research's 154% first-half surge makes it the top-performing semiconductor equipment stock of 2026.

Lam Research Corp. has emerged as the clearest beneficiary of the AI infrastructure buildout, with its stock surging 153.9% in the first half of 2026 — nearly three times the 54.9% gain of the Zacks Electronics-Semiconductor industry. The rally has far outpaced peers including Amkor Technology, up 118.1%, and Lattice Semiconductor, up 108%, while Broadcom gained just 8.9%.

"Lam Research sits at the center of AI chip manufacturing, supplying the etch and deposition equipment that companies like TSMC and Samsung need to produce advanced semiconductors," said Rachel Kim, semiconductor analyst at Edgen. "The company's exposure to high-bandwidth memory and advanced packaging makes it a direct play on AI infrastructure spending."

In the fiscal third quarter, revenue rose 24% year over year to $5.84 billion, beating the Zacks Consensus Estimate by 1.3%. Non-GAAP earnings climbed 41.3% to $1.47 per share, exceeding estimates by 8.1%. Operating margin expanded 220 basis points to 35%, helped by a broader manufacturing footprint in Asia and continued cost discipline. Revenue has remained above $5 billion for four consecutive quarters.

The company expects advanced packaging revenue to grow more than 50% in 2026 after strong growth last year, with new manufacturing technologies such as backside power distribution and dry-resist processing providing additional tailwinds. Analysts project fiscal 2027 revenue rising 31.1% and earnings per share climbing 38.3%. Yet at 76.24 times forward earnings — more than double the sector's 35.94 multiple — the stock carries a valuation that typically triggers profit-taking.

AI Infrastructure Spending Powers Lam Research's Equipment Business

Lam Research does not design chips. Instead, it supplies the wafer fabrication equipment that TSMC and Samsung use to build the world's most advanced processors. As AI models grow larger and more complex, chipmakers require increasingly sophisticated etch and deposition tools — Lam Research's core specialty.

The company's ALTUS ALD system improves manufacturing efficiency through molybdenum-based deposition, while the Aether platform helps customers build denser chips with higher transistor counts. Both technologies become more valuable as AI processors push the limits of existing process nodes. High-bandwidth memory, a critical component in Nvidia's and AMD's AI accelerators, requires specialized deposition equipment that Lam Research supplies.

Valuation Premium Tests Investor Conviction

At 76.24 times forward earnings, Lam Research trades at a premium to every major semiconductor equipment peer. Lattice Semiconductor trades at 75.34 times, Amkor Technology at 40.65 times, and Broadcom at 22.66 times. The Zacks Value Score of F flags the stock as overvalued by traditional metrics.

But the premium reflects a growth trajectory that few semiconductor companies can match. Consensus estimates call for fiscal 2026 revenue growth of 25.4% and earnings growth of 37.2%, followed by 31.1% revenue growth and 38.3% earnings growth in fiscal 2027. If those projections hold, the forward multiple will compress naturally as earnings catch up to the stock price.

For investors weighing whether to buy more or take profits, the answer depends on conviction in the AI infrastructure cycle. The buildout remains in its early stages, and Lam Research's leadership in etch and deposition gives it a competitive advantage that competitors would struggle to replicate. The company currently carries a Zacks Rank #2 (Buy).

This article is for informational purposes only and does not constitute investment advice.