Lam Research Corporation (LRCX)
LRCX moved a median of -0.04% 30 minutes after news, and -0.11% by the close. How LRCX actually reacts to news — the realized, point-in-time move the market made, measured across 354 labeled events over the last three years with zero look-ahead.
LRCX’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.05% | 41% | 352 |
| 30-min | -0.04% | 46% | 354 |
| 60-min | -0.06% | 46% | 354 |
| to close | -0.11% | 44% | 350 |
| Middle 50% of LRCX reactions | -0.59% to +0.35% |
|---|---|
| Median reaction (30-min) | -0.04% |
| Measured reactions | 354 |
Half of all Lam Research Corporation news events land between -0.59% and +0.35% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How LRCX reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 49 | -0.84% | 27% | -1.09% |
| Analyst downgrades | 26 | +0.77% | 89% | +1.01% |
| Coverage initiations | 31 | -0.15% | 45% | +0.34% |
| Rating reiterations | 245 | +0.04% | 51% | +0.16% |
| Price-target raises | 136 | +0.23% | 60% | +0.01% |
| Price-target cuts | 35 | -0.03% | 46% | +0.09% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. See how LRCX ranks against every other measured name →
That’s how LRCX usually reacts — get an email when it moves on news →Email me when LRCX moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to LRCX's baseline. Nothing else.
Recent LRCX events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Lam Research Corporation Announces September Quarter Financial Conference Call | Press release | PR Newswire | +1.52% | +2.17% | |
| Form ARS LAM RESEARCH CORP For: Jun 28 | SEC filing · Form ARS | SEC EDGAR | -0.03% | +1.98% | |
| Form DEF 14A LAM RESEARCH CORP For: Nov 03 | SEC filing · Form DEF | SEC EDGAR | -0.03% | +1.98% | |
| Form DEFA14A LAM RESEARCH CORP | SEC filing · Form DEFA14A | SEC EDGAR | -0.03% | +1.98% | |
| Form 8-K LAM RESEARCH CORP For: Aug 24 | SEC filing · Form 8-K | SEC EDGAR | -2.05% | -5.15% | |
| Lam Research Announces Retirement of Michael R. Cannon and Sohail U. Ahmed from Board of Directors | Press release | PR Newswire | -2.05% | -5.15% | |
| Lam Research Corporation Announces a 27% Increase in Quarterly Dividend | Press release | PR Newswire | -2.05% | -5.15% | |
| Lam Research Breaks Ground on New Oregon Lab to Accelerate AI Era Semiconductor Research & Development Locally, Globally | Press release | PR Newswire | -0.31% | -0.09% | |
| Lam Research Corporation Announces Participation at Upcoming Conferences | Press release | PR Newswire | -0.31% | -0.09% | |
| Lam Research Announces Plans to Invest More than $3B to Expand Global Lab Network, Increase Innovation Velocity in the AI Era | Press release | PR Newswire | +0.49% | +0.11% | |
| Lam Research and NY Creates Team Up to Enable Training of University Students for the Semiconductor Workforce | Press release | PR Newswire | -0.40% | +0.06% | |
| Form 10-K LAM RESEARCH CORP For: Jun 28 | SEC filing · Form 10-K | SEC EDGAR | -2.80% | — | |
| Form 8-K LAM RESEARCH CORP For: Jul 29 | SEC filing · Form 8-K | SEC EDGAR | -5.87% | -6.82% | |
| Lam Research Corporation Reports Financial Results for the Quarter Ended June 28, 2026 | Press release | PR Newswire | -5.87% | -6.82% | |
| Lam Research Corporation Announces June Quarter Financial Conference Call | Press release | PR Newswire | +1.46% | -2.97% | |
| Form 11-K LAM RESEARCH CORP For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | -1.90% | -1.53% | |
| Form SD LAM RESEARCH CORP | SEC filing · Form SD | SEC EDGAR | +0.14% | +2.85% | |
| Lam Research Corporation Declares Quarterly Dividend | Press release | PR Newswire | +0.15% | -0.04% | |
| Lam Research Corporation Announces Participation at Upcoming Conferences | Press release | PR Newswire | -0.37% | +0.70% | |
| Form 10-Q LAM RESEARCH CORP For: Mar 29 | SEC filing · Form 10-Q | SEC EDGAR | +1.55% | +0.10% | |
| Form 8-K LAM RESEARCH CORP For: Apr 22 | SEC filing · Form 8-K | SEC EDGAR | -0.24% | -2.10% | |
| Lam Research Corporation Reports Financial Results for the Quarter Ended March 29, 2026 | Press release | PR Newswire | -0.24% | -2.10% | |
| Lam Research Corporation Announces March Quarter Financial Conference Call | Press release | PR Newswire | +0.98% | +4.60% | |
| Ethisphere Recognizes Lam Research as One of the World's Most Ethical Companies® for Fourth Consecutive Year | Press release | PR Newswire | -1.58% | -1.01% | |
| IBM and Lam Research Announce Collaboration to Advance Sub-1nm Logic Scaling | Press release | PR Newswire | +1.15% | +2.00% | |
| Lam Research Corporation Announces Participation at Upcoming Conferences | Press release | PR Newswire | -0.44% | +1.63% | |
| Lam Research Deepens Investment in Boise to Support Projected Growth in U.S. Semiconductor Manufacturing | Press release | PR Newswire | +0.05% | +0.05% | |
| Lam Research Corporation Declares Quarterly Dividend | Press release | PR Newswire | -0.24% | +4.55% | |
| Form 8-K/A LAM RESEARCH CORP For: Jan 30 | SEC filing · Form 8-K | SEC EDGAR | -0.81% | -9.01% | |
| Form 8-K LAM RESEARCH CORP For: Jan 30 | SEC filing · Form 8-K | SEC EDGAR | -0.81% | -9.01% | |
| Lam Research Announces Leadership Transitions to Increase Company Velocity for the AI era | Press release | PR Newswire | -0.81% | -9.01% | |
| Lam Research Appoints Cadence CEO Anirudh Devgan to Board of Directors | Press release | PR Newswire | -0.81% | -9.01% | |
| Lam Research and CEA-Leti Expand Research and Development Collaboration to Advance Fabrication of Specialty Technologies | Press release | PR Newswire | -0.51% | -0.21% | |
| Form 10-Q LAM RESEARCH CORP For: Dec 28 | SEC filing · Form 10-Q | SEC EDGAR | +1.52% | -4.54% | |
| Form 8-K LAM RESEARCH CORP For: Jan 28 | SEC filing · Form 8-K | SEC EDGAR | +1.58% | +1.06% | |
| Lam Research Corporation Reports Financial Results for the Quarter Ended December 28, 2025 | Press release | PR Newswire | +1.58% | +1.06% | |
| Lam Research Corporation Announces December Quarter Financial Conference Call | Press release | PR Newswire | -1.54% | -0.98% | |
| Lam Research Deepens Investment in Silicon Forest to Accelerate Semiconductor Industry Leadership in the AI Era | Press release | PR Newswire | -0.74% | +0.83% | |
| Lam Research Corporation Announces Participation at Upcoming Conference | Press release | PR Newswire | +0.69% | +1.38% | |
| Fabric8Labs Secures $50M to Expand U.S. Advanced Manufacturing Capacity | Press release | PR Newswire | +0.24% | — | |
| Form 8-K LAM RESEARCH CORP For: Nov 04 | SEC filing · Form 8-K | SEC EDGAR | -1.09% | -0.11% | |
| Form S-8 LAM RESEARCH CORP | SEC filing · Form S-8 | SEC EDGAR | -1.09% | -0.11% | |
| Form S-8 POS LAM RESEARCH CORP | SEC filing · Form S-8 | SEC EDGAR | -1.09% | -0.11% | |
| Lam Research Corporation Declares Quarterly Dividend | Press release | PR Newswire | -1.09% | -0.11% | |
| Form 10-Q LAM RESEARCH CORP For: Sep 28 | SEC filing · Form 10-Q | SEC EDGAR | +0.61% | +0.49% | |
| Form 8-K LAM RESEARCH CORP For: Oct 22 | SEC filing · Form 8-K | SEC EDGAR | +2.90% | +6.91% | |
| Lam Research Corporation Reports Financial Results for the Quarter Ended September 28, 2025 | Press release | PR Newswire | +2.90% | +6.91% | |
| Lam Research Corporation Announces September Quarter Financial Conference Call | Press release | PR Newswire | -0.02% | -0.10% | |
| Form ARS LAM RESEARCH CORP For: Jun 29 | SEC filing · Form ARS | SEC EDGAR | -0.13% | +1.34% | |
| Form DEF 14A LAM RESEARCH CORP For: Nov 04 | SEC filing · Form DEF | SEC EDGAR | -0.13% | +1.34% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the LRCX section they belong to.
Where else LRCX is measured.
LRCX earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Baidu, Inc. - American Depositary Shares, each representing 8 ordinary share (BIDU) | 357 | +0.02% | 52% |
| DETERMINE (DTRM) | 354 | 0.00% | 31% |
| SIGMA DESIGNS (SIGM) | 354 | +0.36% | 56% |
| 58. COM INC (WUBA) | 354 | +0.07% | 53% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Technology names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Lam Research Corporation's median reaction calculated?
Every labeled LRCX news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 354 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 46% of LRCX's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does LRCX's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.