KLA Corporation (KLAC)
KLAC moved a median of -0.05% 30 minutes after news, and -0.04% by the close. How KLAC actually reacts to news — the realized, point-in-time move the market made, measured across 321 labeled events over the last three years with zero look-ahead.
KLAC’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.07% | 44% | 319 |
| 30-min | -0.05% | 49% | 320 |
| 60-min | -0.34% | 43% | 320 |
| to close | -0.04% | 49% | 310 |
| Middle 50% of KLAC reactions | -0.67% to +0.65% |
|---|---|
| Median reaction (30-min) | -0.05% |
| Measured reactions | 321 |
Half of all KLA Corporation news events land between -0.67% and +0.65% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How KLAC reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 38 | -0.24% | 45% | -0.16% |
| Analyst downgrades | 21 | +0.21% | 71% | +0.60% |
| Coverage initiations | 30 | -0.28% | 33% | +0.34% |
| Rating reiterations | 225 | -0.02% | 49% | -0.62% |
| Price-target raises | 110 | +0.11% | 55% | -0.55% |
| Price-target cuts | 24 | -0.21% | 42% | +0.19% |
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 KLAC ranks against every other measured name →
That’s how KLAC usually reacts — get an email when it moves on news →Email me when KLAC moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to KLAC's baseline. Nothing else.
Recent KLAC events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form ARS KLA CORP For: Jun 30 | SEC filing · Form ARS | SEC EDGAR | -0.21% | +0.80% | |
| Form DEF 14A KLA CORP For: Nov 04 | SEC filing · Form DEF | SEC EDGAR | -0.21% | +0.80% | |
| Form DEFA14A KLA CORP | SEC filing · Form DEFA14A | SEC EDGAR | -0.21% | +0.80% | |
| Form 10-K KLA CORP For: Jun 30 | SEC filing · Form 10-K | SEC EDGAR | +1.49% | +0.27% | |
| Form 8-K KLA CORP For: Aug 06 | SEC filing · Form 8-K | SEC EDGAR | +1.49% | +0.27% | |
| KLA Declares Regular Cash Dividend | Press release | PR Newswire | +1.49% | +0.27% | |
| Form 8-K KLA CORP For: Jul 28 | SEC filing · Form 8-K | SEC EDGAR | +7.14% | -4.66% | |
| KLA CORPORATION REPORTS FISCAL 2026 FOURTH QUARTER AND FULL YEAR RESULTS | Press release | PR Newswire | +7.14% | -4.66% | |
| Form 8-K KLA CORP For: Jun 11 | SEC filing · Form 8-K | SEC EDGAR | -1.34% | -3.14% | |
| Form SD KLA CORP | SEC filing · Form SD | SEC EDGAR | +0.35% | -3.89% | |
| Form 8-K KLA CORP For: May 07 | SEC filing · Form 8-K | SEC EDGAR | +0.53% | +2.28% | |
| KLA Corporation Announces Ten-to-One Stock Split and Quarterly Cash Dividend Payment | Press release | PR Newswire | +0.53% | +2.28% | |
| Form 10-Q KLA CORP For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -1.19% | +3.89% | |
| Form 8-K KLA CORP For: Apr 29 | SEC filing · Form 8-K | SEC EDGAR | -1.19% | +3.89% | |
| KLA Corporation Reports Fiscal 2026 Third Quarter Results | Press release | PR Newswire | -1.19% | +3.89% | |
| Form 8-K KLA CORP For: Mar 11 | SEC filing · Form 8-K | SEC EDGAR | -0.74% | -3.78% | |
| KLA Hosts Investor Day; Announces $7 Billion Share Repurchase Program and 21% Increase to Quarterly Dividend; Reaffirms March 2026 Guidance | Press release | PR Newswire | -0.74% | -3.78% | |
| Form 8-K KLA CORP For: Feb 05 | SEC filing · Form 8-K | SEC EDGAR | +1.67% | +4.78% | |
| KLA Declares Regular Cash Dividend | Press release | PR Newswire | +1.67% | +4.78% | |
| Form 10-Q KLA CORP For: Dec 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.34% | +0.74% | |
| Form 8-K KLA CORP For: Jan 29 | SEC filing · Form 8-K | SEC EDGAR | +0.39% | -7.70% | |
| KLA Corporation Reports Fiscal 2026 Second Quarter Results | Press release | PR Newswire | +0.39% | -7.70% | |
| Form 8-K KLA CORP For: Nov 05 | SEC filing · Form 8-K | SEC EDGAR | -0.21% | -0.22% | |
| Form S-8 KLA CORP | SEC filing · Form S-8 | SEC EDGAR | -0.21% | -0.22% | |
| KLA Declares Regular Cash Dividend | Press release | PR Newswire | -1.30% | -0.54% | |
| Form 10-Q KLA CORP For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.24% | +0.25% | |
| Form 8-K KLA CORP For: Oct 29 | SEC filing · Form 8-K | SEC EDGAR | +2.86% | -1.60% | |
| KLA Corporation Reports Fiscal 2026 First Quarter Results | Press release | PR Newswire | +2.86% | -1.60% | |
| Form ARS KLA CORP For: Jun 30 | SEC filing · Form ARS | SEC EDGAR | -0.02% | +0.22% | |
| Form DEF 14A KLA CORP For: Nov 05 | SEC filing · Form DEF | SEC EDGAR | -0.02% | +0.22% | |
| Form DEFA14A KLA CORP | SEC filing · Form DEFA14A | SEC EDGAR | -0.02% | +0.22% | |
| Form 10-K KLA CORP For: Jun 30 | SEC filing · Form 10-K | SEC EDGAR | +0.59% | -1.30% | |
| Form 8-K KLA CORP For: Aug 07 | SEC filing · Form 8-K | SEC EDGAR | -0.06% | +0.20% | |
| KLA Declares Regular Cash Dividend | Press release | PR Newswire | -0.06% | +0.20% | |
| Form 8-K KLA CORP For: Jul 31 | SEC filing · Form 8-K | SEC EDGAR | +2.72% | +3.56% | |
| KLA CORPORATION REPORTS FISCAL 2025 FOURTH QUARTER AND FULL YEAR RESULTS | Press release | PR Newswire | +2.72% | +3.56% | |
| Form 8-K KLA CORP For: Jul 03 | SEC filing · Form 8-K | SEC EDGAR | +0.85% | +0.43% | |
| Form SD KLA CORP | SEC filing · Form SD | SEC EDGAR | -0.19% | -0.44% | |
| KLA Invests in Operations in Wales with the Opening of a $138 Million R&D and Manufacturing Facility | Press release | PR Newswire | +0.27% | +0.14% | |
| Form 8-K KLA CORP For: May 08 | SEC filing · Form 8-K | SEC EDGAR | +0.02% | -0.70% | |
| KLA Declares Regular Cash Dividend | Press release | PR Newswire | +0.02% | -0.70% | |
| Form 10-Q KLA CORP For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +1.17% | +0.56% | |
| Form 8-K KLA CORP For: Apr 30 | SEC filing · Form 8-K | SEC EDGAR | -0.34% | -1.87% | |
| Form 8-K KLA CORP For: Apr 30 | SEC filing · Form 8-K | SEC EDGAR | -0.34% | -1.87% | |
| KLA Corporation Reports Fiscal 2025 Third Quarter Results; Announces an Increase in the Dividend Level to $1.90 Per Share and a $5 billion Increase in Share Repurchase Authorization | Press release | PR Newswire | -0.34% | -1.87% | |
| Form 8-K KLA CORP For: Feb 13 | SEC filing · Form 8-K | SEC EDGAR | -0.95% | -1.24% | |
| KLA Declares Regular Cash Dividend | Press release | PR Newswire | -0.95% | -1.24% | |
| Form 10-Q KLA CORP For: Dec 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.35% | +1.79% | |
| Form 8-K KLA CORP For: Jan 30 | SEC filing · Form 8-K | SEC EDGAR | -0.39% | -2.73% | |
| KLA Corporation Reports Fiscal 2025 Second Quarter Results | Press release | PR Newswire | -0.39% | -2.73% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the KLAC section they belong to.
Where else KLAC is measured.
KLAC earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| NETGEAR, Inc. (NTGR) | 325 | -0.07% | 44% |
| HIGHPOWER INTL (HPJ) | 324 | 0.00% | 45% |
| AQUANITA CORP (AQ) | 320 | -0.09% | 35% |
| Kulicke and Soffa Industries, Inc. (KLIC) | 320 | +0.16% | 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 KLA Corporation's median reaction calculated?
Every labeled KLAC 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 321 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. 49% of KLAC'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 KLAC'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.