Lam Research Corporation

About Lam Research Corporation

Lam Research sells wafer-fabrication equipment and related services used by semiconductor manufacturers to make chips. Its tools support processes including etch, deposition and cleaning, while its customer-support business provides services and products for equipment already installed at customer sites. Revenue comes from systems and customer support; the supplied figures do not state their respective contributions. Customers include foundries and logic and memory chipmakers. Lam reports FY2026 revenue of $23.2 billion and net income of $7.3 billion, up from revenue of $18.4 billion and net income of $5.4 billion in FY2025. Its equipment demand is tied to chipmakers’ manufacturing investment.

Notable Price Movement

1. Oct 26-30$239.113.92%

   Lam Research gained 10.53% over the week, rising from $230.15 to $254.39, with advances in each of the four sessions from Monday through Thursday. The largest moves came Wednesday (+5.4%) and Monday (+3.2%); Thursday added just 0.2%, with no material reversal. The rebound followed a 6.7% decline in the Philadelphia Semiconductor Index on October 22. Broader market support included easing crude prices ahead of a busy week and a dovish tint to Federal Reserve results on Wednesday. Company-specific coverage highlighted record foundry sales amid AI chip complexity, advanced packaging and China demand, but the supplied evidence does not establish that these reports drove the daily moves.

   28 sources
2. Oct 19-23$230.1012.82%

   Lam Research fell 12.07%, from $309.56 to $272.20, over the supplied October 12–19 price window. The main pressure was cautious guidance and management’s warning that supply-chain bottlenecks were holding back revenue, despite record quarterly results and a reported first-ever 40% operating margin. Concerns about falling China revenue and a potential China slowdown added to the growth-risk narrative. The decline was steep across the week: the stock closed lower each day from October 12 through October 16, reaching $263.94, before rebounding 3.1% on October 19. Semiconductor shares also weakened broadly, with reports describing chip stocks falling despite solid earnings; the supplied evidence does not quantify how much of Lam’s decline came from sector moves versus company-specific concerns.

   28 sources
3. Oct 12-16$263.9417.22%

   Lam Research fell 10.48%, from $345.80 to $309.56, in the reported period. The decline was steady rather than a sharp reversal: the stock closed lower on each listed session from October 6 through October 12, with losses accelerating on October 8, when volume reached 9.0 million shares. The supplied evidence identifies no company-specific announcement during the period. It does describe broader semiconductor-share weakness amid inflation and interest-rate concerns, while Lam approached an earnings report for which analysts expected strong year-over-year revenue and EPS growth. That backdrop offered a possible market explanation, but the evidence does not establish a specific trigger for each day’s move.

   28 sources
4. Oct 5-9$318.848.24%

   Lam Research rose 3.10%, from $323.86 to $333.89 across the supplied closes, after a sharp early-week rally followed by a substantial reversal. The stock gained on each session through Oct. 2, climbing to $347.49, then fell to $345.80 on Oct. 5 and $333.89 on Oct. 6, surrendering most of its advance from the starting price. Morgan Stanley raised its price target to $385 from $367 and maintained an Overweight rating; another headline linked a 33% target increase to AI spending. Those reports provide a positive semiconductor-demand backdrop, but the evidence does not establish that they drove the earlier gains. No company-specific operational announcement explains the late-week pullback.

   28 sources
5. Sep 28 - Oct 2$347.4910.24%

   Lam Research rose 10.72% over the reported window, from $307.16 to $340.10. After climbing to $315.21 on September 25, it dipped slightly to $314.47 on September 28, then advanced in each session through October 1. No Lam-specific operating announcement appears in the supplied evidence. The reported market backdrop was supportive: Barchart coverage cited weak US economic and payroll data easing rate-hike concerns, falling bond yields, and lower crude prices amid hopes for a US-Iran deal. Separately, a Motley Fool article identified Micron’s September 30 earnings report as a potential catalyst for memory stocks, including Lam, but the evidence does not establish that it drove the shares’ daily gains.

   21 sources
6. Sep 21-25$315.219.41%

   Lam Research gained 14.13%, rising from the stated $269.23 reference to $307.28. The advance was already underway before the week began: the stock closed at $288.11 on September 18, then climbed to $302.28 on September 21 and $310.96 on September 22 before easing to $307.28 on September 23. The supplied coverage points to optimism about a structural wafer-fabrication-equipment upcycle, with BofA raising chip-equipment spending forecasts amid AI, memory and packaging demand, as the main supportive backdrop; it does not establish a dated company-specific announcement as the catalyst. The late-week pullback was modest, and the shares retained most of their gains. Broader market reports also cited rising bond yields and weakness in chipmakers as potential headwinds.

   28 sources
7. Sep 14-18$288.113.39%

   Lam Research fell 11.10%, from $307.65 to $273.49 across the supplied period. The evidence does not identify a company-specific announcement, earnings release, contract, or guidance change driving the decline. Trading initially strengthened, with the stock reaching $320.42 on September 8, before reversing to $315.84 on September 9 and dropping to $298.01 on September 10; it was essentially flat on September 11 before a heavy-volume selloff on September 14, when 13.7 million shares changed hands. Valuation concerns were a recurring theme: GuruFocus called the shares 87.1% overvalued, while other coverage debated whether the pullback represented a buying opportunity or a cyclical peak. The broader market also weakened, with VTI reported down 0.5%.

   28 sources
8. Sep 7-11$298.223.07%

   Lam Research rose $18.93, or 6.28%, from $301.49 to $320.42 over the reported week. The stock first fell to $288.32 on September 2, losing 4.4% from the starting close, before reversing higher on September 3 and accelerating on September 4 and September 8. The available evidence does not identify a new company-specific announcement, earnings release, or guidance change driving the rebound. Instead, trading appears to have reflected broader semiconductor optimism, including expectations for memory expansion, AI-related demand, and easing China tariff discussions. Commentary also highlighted Lam’s strong FY2026 results and shareholder returns. The evidence does not establish a separate catalyst for the sharp gains on September 4 and September 8.

   28 sources
9. Aug 31 - Sep 4$307.651.90%

   Lam Research fell $25.92, or 8.14%, from $318.58 to $292.66 over the reported week. The stock dropped from $301.49 on August 31 to $290.20 on September 1 and slipped to $288.32 on September 2 before recovering 1.51% on September 3. Earlier coverage had highlighted strong guidance, shareholder-friendly updates and a 26.9% dividend increase, supporting the prior advance, but valuation concerns became the more important counterweight. Yahoo Finance described the stock as fully priced after its run, while Simply Wall St. called it overvalued despite strong AI demand. The supplied evidence does not identify a new company-specific shock explaining the decline, so the reversal appears principally valuation-driven.

   28 sources
10. Aug 24-28$301.903.85%

    Lam Research gained $8.05, or 2.59%, over the week, rising from $310.53 to $318.58. Trading was volatile: shares fell to $310.17 on Monday after the period began, rebounded to $314.66 Tuesday, slipped to $312.88 Wednesday, then jumped 1.82% Thursday to finish at the weekly high. The decisive catalyst was the broader technology rally following Nvidia’s earnings, which strengthened optimism around AI-related semiconductor demand; the Nasdaq 100 rose 1.43% in the corresponding session. Earlier market moves were also supported by lower crude prices and easing bond yields. No Lam-specific earnings release or guidance change was identified during the week, although recent company commentary cited in research emphasizes AI-driven growth and recurring services.

    28 sources
11. Aug 17-21$314.005.52%

    Lam Research fell $26.48, or 7.86%, over the week, from $337.01 to $310.53. The stock initially gained 3.5% on Monday to $343.84, but reversed sharply as chipmakers and AI stocks weakened across the market, with the Nasdaq 100 down 1.68% on Tuesday and 1.76% on Wednesday. Rising global bond yields added pressure to growth and semiconductor-equipment shares, while reports that institutions were reshuffling positions provided an additional company-specific trading narrative. Lam gave back more than Monday’s gain over Tuesday and Wednesday, dropping to $307.17 on Wednesday on volume above 10.8 million shares, then recovered modestly Thursday. No earnings release, guidance change, or contract announcement explains the move.

    28 sources
12. Aug 10-14$332.366.75%

    Lam Research rose 4.00%, from $294.61 to $306.40 over the supplied Aug. 3–10 trading window. The main catalyst was the announcement of a $3 billion, five-year expansion of its global research-and-development laboratory network, which supported expectations for stronger future product development and helped drive the sharp 7.8% gain to $317.74 on Aug. 4. The stock then gave back much of that advance over the next two sessions, closing at $305.77 on Aug. 6, before recovering to $311.35 on Aug. 7. Additional support came from optimism about semiconductor spending and Lam’s earnings momentum. It retreated 1.6% on Aug. 10, but remained above the period starting price.

    28 sources
13. Aug 3-7$311.356.26%

    Lam Research rose $48.13, or 17.85%, from $269.61 to $317.74 over the reported period. Trading was volatile: shares fell 6.4% on July 29 before rebounding 18.0% on July 30, then slipped 1.6% on July 31 after Morgan Stanley cut its price target from $404 to $367. The stock gained modestly on August 3 and jumped 7.8% on August 4. The strongest evidence points to a broad technology-led rally rather than a newly disclosed Lam-specific catalyst: the Nasdaq 100 rose 3.32% on August 4 amid strong technology earnings, while easing Middle East tensions also supported risk assets. Zacks simultaneously highlighted Lam’s AI equipment demand and included it in Strong Buy screens.

    20 sources

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