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KLAC — structural market context

KLA Corporation

Structural market context from public regulatory and market data, shown with its as-of dates. Descriptive only: nothing on this page is a recommendation, a prediction, or advice to buy or sell any security.

What changed

As of the close on Nov 4. Each line shows the earlier value, the later value and their dates.

Price

Change from the Nov 3 close to the Nov 4 close: −4.10%.

Volume

1.30× its 20-session average on Nov 4.

Includes pre- and post-market trading.

Short interest

Short interest 24.9M shares (settlement Oct 15) vs 24.3M (Sep 30).

No new file loaded in this window. Latest file: settlement Oct 15, loaded Oct 27.

Fails-to-deliver

Latest file (settlements Oct 1–Oct 14, published Nov 3): 3 days with fails, largest 2K shares on Oct 13.

Previous file (settlements Sep 15–Sep 30, published Oct 16): 4 days with fails, largest 36K shares on Sep 21.

Analyst rating actions

None recorded in this window.

Insider filings (Form 4)

None recorded in this window.

Events · early sample

None recorded in this window.

KLAC events and their magnitude

Latest SEC filing in the event study

8-K 2.02 · Earnings release · filed 2026-10-28 · View on sec.gov ↗

…

How the Event Study works →

KLAC short interest & days to cover

SHARES SHORT

24.9M

% OF FLOAT

1.9%

DAYS TO COVER

2.7

CHANGE VS PRIOR

+2.6%

FINRA consolidated short interest, reported twice a month and published ~2 weeks after each settlement date. % of float uses reported free float. · as of 2026-10-15 (21d ago)

How short interest and days to cover are measured →

KLAC fails-to-deliver (FTD)

Settlement date	Failed shares	Price
2026-10-13 · 23d	2K	$190.12
2026-10-09 · 27d	607	$196.72
2026-10-05 · 31d	1K	$206.89

SEC fails-to-deliver files, published twice a month with ~6 weeks of delay.

How fails-to-deliver are reported →

KLAC insider buying and selling (Form 4)

Last 12 months, Form 4 codes P and S: 0 purchases · 2 sales

Insider	Type	Shares	Value	Filed
WALLACE RICHARD P · officer: President and CEO	Sale (S)	72K	$12.4M	2026-09-16
Lorig Brian · officer: EVP, KLA Global Services	Sale (S)	60K	$12.4M	2026-08-14

SEC Form 4 filings: purchases and sales reported on Form 4 (transaction codes P and S) only; grants and option exercises excluded. Attributed public records.

Form 4 transaction codes explained →

KLAC analyst ratings

Firm	Action	Rating	Published
Wells Fargo	price_target	—	2026-10-29
Cantor Fitzgerald	hold	Overweight	2026-10-29
BMO Capital	price_target	—	2026-10-29
Piper Sandler	price_target	—	2026-10-29
Truist Financial	price_target	—	2026-10-29

Rating actions as published by the firms, from public feeds. They are not graded here.

Frequently asked questions

What is KLAC's short interest?

As of the FINRA settlement date 2026-10-15, KLAC had 24.9M shares sold short — 1.9% of its float, with 2.7 days to cover at average volume. FINRA publishes this data roughly two weeks after each twice-monthly settlement, so it is inherently delayed. A short-interest figure describes an aggregate position; it does not predict what the stock will do.

Are insiders buying KLAC?

In the last 12 months of SEC Form 4 filings, KLAC recorded 0 insider purchases and 2 sales reported on Form 4 (transaction codes P and S; grants and option exercises excluded). These are attributed public records — information, not instruction.

What do analysts say about KLAC?

The most recent action: Wells Fargo price_target on 2026-10-29. Rating actions are shown as published by the firms; they are not graded here.

Is this page telling me to buy or sell KLAC?

No. Everything on this page is descriptive, structural market context from public data, shown with its as-of dates. TradeAI News does not issue directional recommendations, price predictions, or buy/sell advice — for any ticker.

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Companies in the same SEC industry group

COHR · Coherent Corp.CAMT · Camtek Ltd.NVMI · Nova Ltd.OPTX · Syntec Optics Holdings, Inc. C AVTR · Avantor, Inc.AXGN · Axogen, Inc.

Industry: SIC code 3827 (group 38xx) as recorded on SEC EDGAR.

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KLAC: the full history

Latest rows shown. Full history, market-wide screens, cluster detection and the context journal live in the dashboard.

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Not financial advice. Trading involves risk. Descriptive structural context, never a recommendation.