Watching
LRCX · Lam Research Corporation
Updated ·
Against its published line
Above its line on the last close.
How to read this
The red mark is the published kill line — the price that would prove the thesis wrong. The dot is where the name closed on 9 October 2026; a dot left of the mark has closed through its line.
Distance is drawn on a square-root scale, so close calls get the room. Past 8% a row reads well clear, with a hollow dot to show the figure is off the drawn scale. Rows run tightest first.
Kill line
A weekly close below $301, under the late-September trading range; September-quarter revenue below $8.10 billion, December-quarter guidance below the September level, or a China export-licence disruption disclosed on 21 October 2026 would confirm the break.
Open pick Medium conviction, opened at $340.10. Since then −6.3% against the S&P 500's +1.9% (−8.2 pp). Kill line at open: $301.00 (weekly close); graded by at the latest.
Catalyst (in 9 days)
How picks are graded →The thesis
Lam Research's recovery case rests on record memory profits and rising chipmaker spending reaching its order book for etch and deposition tools. The September-quarter report on 21 October 2026 settles it: revenue at or above the $8.10 billion guidance midpoint, December-quarter guidance that does not step back, and no China export-licence disruption.
The customer evidence strengthened this week while the shares weakened. Samsung guided third-quarter operating profit to a record 107.4 trillion won on 8 October 2026, and Cantor Fitzgerald raised its target to $425 on 7 October 2026. The adjusted close still fell to $320.59 on 8 October 2026, 25.9% below the 52-week high of $432.87.
The narrative is maturing: the memory-spending story is well known, and two target raises (Morgan Stanley on 5 October 2026, Cantor on 7 October 2026) were followed by lower prices in the sessions after each. With results 12 days away, the read now rests on Lam's own revenue and guidance.
Bullish and bearish views on Lam Research Corporation
The bull case on Lam Research Corporation (LRCX), in brief: Samsung's memory profits hit a record. The bear case: Good news no longer lifts the price.
Bull case
- Samsung's memory profits hit a record. Samsung guided third-quarter 2026 operating profit to 107.4 trillion won (about $80.2 billion), up 782.5% from a year earlier, and revenue to about 195 trillion won, CNBC reported on 8 October 2026. Korea was 20% of Lam's June-quarter revenue.
- Cantor lifted its target by a third. Cantor Fitzgerald raised its target from $320 to $425 on 7 October 2026, citing AI logic, advanced packaging and high-bandwidth memory, according to GuruFocus via Yahoo Finance.
- Morgan Stanley sees shipments growing about 50%. On 5 October 2026, Morgan Stanley raised its target from $367 to $385 with an Overweight rating, and lifted its Lam system-shipment growth forecasts to 50% for calendar 2026 and 47% for 2027, per Stocktwits.
- Micron is lifting capital spending. Micron guided fiscal first-quarter 2027 capital expenditure to about $11.5 billion and the first half to about $25 billion on its 30 September 2026 call.
- Lam's own guidance sets a rising bar. The 29 July 2026 outlook called for September-quarter revenue of $8.10 billion ± $400 million and GAAP diluted earnings per share of $2.15 ± $0.15, after June-quarter revenue of $6.72 billion, up 15.1% sequentially.
Bear case
- Good news no longer lifts the price. News reports showed the shares down on 6 October 2026 (ad-hoc-news, 3.82% intraday), 7 October 2026 (GuruFocus, 2.42%) and 8 October 2026 (TradingKey, 3.63%), the sessions that followed two target raises and Samsung's record guidance.
- Valuation leaves little room for an in-line report. GuruFocus put the shares 106.7% above its own GF Value estimate of $157.64 on 7 October 2026. A report that only meets the $8.10 billion midpoint may not be enough at that multiple.
- Micron's new money goes to buildings first. Micron said on 30 September 2026 that construction spending will grow meaningfully faster than equipment spending in fiscal 2027, so part of the increase may reach tool makers later than the headline capex implies.
- China remains the main shipment risk. China was 26% of June-quarter revenue in the 29 July 2026 release. Since the Validated End-User exemption expired on 31 December 2025, TSMC, Samsung and SK Hynix run their China fabs on annual US licences that can be revised.
- Insiders have been net sellers. TradingKey reported on 2 October 2026 that insider sales exceeded $175 million over the trailing 12 months, with no insider purchases.
Price setup
The adjusted close was $320.59 on 8 October 2026. That sits 25.9% below the 52-week high of $432.87, and the shares are down 2.7% over three months on adjusted daily closes. The 14-day relative strength index (RSI) was 67.3 on 8 October 2026, back under the 70 line that marks an overbought reading after the early-October pullback.
Analyst targets sit well above the price. MarketBeat's consensus 12-month target was $364.01 across 32 brokerages on 3 October 2026, with individual targets at $385 (Morgan Stanley), $390 (B. Riley, 1 October 2026) and $425 (Cantor). The level that matters on the downside is $301, under the late-September trading range.
Crowding is visible. MarketBeat counted 26 articles on Lam in the week to 3 October 2026 against a weekly average of 10, the report is 12 days out, and insiders have sold steadily over the past year.
Catalysts, next 30 days
- 14 October 2026 — ASML third-quarter 2026 results, before the US open. Order intake is the first equipment-maker read on 2027 memory and logic demand before Lam reports.
- 15 October 2026 — TSMC third-quarter 2026 earnings conference (confirmed by TSMC). Capital-spending comments set logic-chip equipment demand, the part of the case behind Morgan Stanley's and Cantor's share-gain views.
- 21 October 2026 — Lam Research September-quarter results and call, 2:00 p.m. Pacific (confirmed by the company). Revenue against the $8.10 billion midpoint, December-quarter guidance and China licence commentary decide the case.
- 29 October 2026 — Samsung detailed third-quarter results. The business breakdown and capital-spending commentary show how much of the record memory profit turns into fab tool orders in 2027.
What would change the view
The case breaks if Lam reports September-quarter revenue below $8.10 billion on 21 October 2026, guides the December quarter below the September-quarter level, or discloses China shipment delays tied to export licences. Any of those would show the memory profit cycle at Samsung and Micron is not yet reaching Lam's shipments.
On price, a weekly close below $301 would put the shares under the late-September trading range and erase the reaction to the early-October target raises. A cautious ASML order intake on 14 October 2026 or a TSMC capital-spending cut on 15 October 2026 would weaken the case before Lam reports.
What it trades with
Lam trades with the wafer-fab-equipment group (Applied Materials, KLA, ASML) and the broader semiconductor index, so ASML's 14 October 2026 report is likely to move it before its own numbers. Memory headlines from Samsung, SK Hynix and Micron feed directly into the shares, since memory makers are its largest customer group.
Rates matter too. Benzinga reported the 10-year Treasury yield back above 5% on 18 September 2026, the same week as the 14 September 2026 AI-slowdown sell-off in chip stocks. A sustained move higher in yields compresses equipment-stock multiples regardless of Lam's results.
Notes
- Lam's fiscal year ends in late June, so the September quarter is the first quarter of fiscal 2027.
- A 10-for-1 stock split took effect in October 2024; every per-share level on this page is post-split.
- China was 26% of June-quarter 2026 revenue (Taiwan 27%, Korea 20%); export-control changes hit bookings before reported revenue.
- The Validated End-User exemption expired on 31 December 2025; TSMC, Samsung and SK Hynix now run their China fabs on annual US licences that can be revised.
- Insider sales run under Rule 10b5-1 plans adopted months in advance, so the timing of a single sale says little about current management views.
Related · shared themes
AMD
Advanced Micro Devices, Inc.
Advanced Micro Devices says AI chip demand exceeds its supply and is lining up Samsung memory to meet it, but reports on 8 October 2026 that OpenAI's revenue is lower than believed hit the shares. The 3 November 2026 third-quarter report tests revenue against the $13.0 billion guide and OpenAI's fourth-quarter Helios start.
MU
Micron Technology, Inc.
Micron Technology's fiscal Q1 2027 guide of $61.5 billion in revenue, about $5 billion above consensus and backed by roughly $150 billion of contracts, still carries the case despite this week's memory selloff and Taiwan strike vote. The ~17 December 2026 report shows whether revenue and an 86.25% gross margin hold.
NVDA
NVIDIA Corporation
NVIDIA's data-center demand has to carry October-quarter revenue to its $108.0 billion outlook as doubts grow over how AI buyers fund their purchases; NVIDIA's 17 November 2026 fiscal third-quarter report settles the case.
SNDK
Sandisk Corporation
Sandisk's contract-backed AI storage recovery still has rising NAND prices behind it, but memory shares now fall even on record peer results. Sandisk's 29 October 2026 fiscal Q1 2027 report settles the case if revenue reaches $10.3 billion and non-GAAP gross margin 83%.