KLA Corporation (KLAC)
S&P 500 · Nasdaq-100 · Top 100 by market cap · Tech Top 100 · Information Technology · data since 1980-10-08 · last close 2026-09-09
KLA Corporation (KLAC) monthly returns (%)
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 17.5 | 6.9 | -3.4 | 18.9 | 9.9 | 57.0 | -39.5 | -3.9 | 4.3 | · | · | · |
| 2025 | 17.2 | -3.8 | -4.1 | 3.4 | 8.0 | 18.4 | -1.9 | -0.6 | 23.7 | 12.1 | -2.6 | 3.4 |
| 2024 | 2.2 | 15.1 | 2.4 | -1.3 | 10.4 | 8.6 | -0.2 | -0.3 | -5.5 | -14.0 | -2.6 | -2.6 |
| 2023 | 4.1 | -3.0 | 5.2 | -3.2 | 15.0 | 9.5 | 6.0 | -2.1 | -8.6 | 2.4 | 16.3 | 6.7 |
| 2022 | -9.5 | -10.2 | 5.0 | -12.8 | 14.7 | -12.5 | 20.2 | -10.0 | -12.1 | 4.6 | 24.7 | -4.1 |
| 2021 | 8.2 | 11.4 | 6.2 | -4.6 | 0.8 | 2.3 | 7.4 | -2.0 | -1.6 | 11.4 | 9.8 | 5.4 |
| 2020 | -7.0 | -6.8 | -6.5 | 14.2 | 7.8 | 10.5 | 2.8 | 3.1 | -5.6 | 1.8 | 28.3 | 2.8 |
| 2019 | 19.1 | 9.1 | 3.4 | 6.8 | -18.6 | 14.7 | 15.3 | 9.1 | 7.8 | 6.0 | -2.6 | 8.7 |
| 2018 | 4.5 | 3.8 | -3.8 | -6.7 | 12.1 | -9.4 | 14.5 | -0.4 | -12.5 | -10.0 | 8.6 | -9.2 |
| 2017 | 8.2 | 6.5 | 5.5 | 3.3 | 6.5 | -12.0 | 1.2 | 1.8 | 13.1 | 2.7 | -5.6 | 2.8 |
| 2016 | -3.4 | 1.9 | 7.5 | -3.9 | 5.1 | 0.4 | 3.4 | -7.8 | 0.7 | 7.8 | 7.1 | -1.4 |
| 2015 | -12.6 | 6.5 | -10.3 | 0.9 | 2.3 | -5.8 | -5.6 | -4.6 | -0.2 | 34.2 | -0.2 | 4.3 |
| 2014 | -4.6 | 6.7 | 6.1 | -7.5 | 3.1 | 10.9 | -1.6 | 7.6 | 3.1 | 0.5 | 9.8 | 1.3 |
| 2013 | 15.0 | 0.4 | -3.7 | 2.9 | 4.5 | -1.0 | 5.2 | -5.2 | 10.3 | 7.8 | -1.9 | 0.9 |
| 2012 | 5.9 | -4.7 | 12.5 | -4.2 | -11.5 | 7.5 | 3.4 | 1.6 | -7.0 | -2.4 | -1.4 | 5.0 |
| 2011 | 14.1 | 11.3 | -3.1 | -7.2 | -1.3 | -6.1 | -1.6 | -7.0 | 4.4 | 23.0 | -1.4 | 4.7 |
| 2010 | -22.0 | 3.8 | 6.2 | 10.1 | -9.3 | -9.4 | 13.6 | -10.8 | 25.8 | 1.4 | 3.4 | 5.4 |
| 2009 | -8.0 | -13.2 | 15.9 | 38.7 | -2.1 | -6.5 | 26.3 | -1.7 | 14.9 | -9.3 | -3.5 | 15.8 |
| 2008 | -13.3 | 0.9 | -11.7 | 17.7 | 5.9 | -11.7 | -7.7 | -1.0 | -14.6 | -26.5 | -18.3 | 15.8 |
| 2007 | -1.0 | 5.3 | 3.0 | 4.2 | -0.8 | -0.1 | 3.4 | 1.5 | -2.9 | -5.6 | -8.4 | 0.2 |
| 2006 | 5.4 | 0.7 | -7.4 | -0.4 | -14.6 | 1.3 | 1.5 | 4.4 | 1.3 | 10.6 | 5.3 | -3.7 |
| 2005 | -0.7 | 6.8 | -6.9 | -15.1 | 16.6 | -3.8 | 18.4 | -1.7 | -3.9 | -5.0 | 10.8 | -3.6 |
| 2004 | -2.6 | -7.6 | -4.6 | -17.1 | 15.5 | 2.5 | -16.5 | -9.4 | 11.0 | 9.8 | -1.0 | 3.4 |
| 2003 | -7.7 | 9.5 | 0.5 | 14.1 | 12.8 | 0.5 | 11.2 | 15.1 | -13.2 | 11.0 | 2.2 | 0.0 |
| 2002 | 15.6 | 1.1 | 14.8 | -11.3 | -11.6 | -15.6 | -10.5 | -16.4 | -15.1 | 27.4 | 24.0 | -19.9 |
| 2001 | 36.2 | -22.1 | 10.1 | 39.6 | -6.1 | 13.3 | -7.0 | -9.7 | -35.7 | 29.4 | 22.9 | -1.3 |
| 2000 | 5.3 | 32.9 | 8.1 | -11.1 | -33.8 | 18.2 | -9.1 | 23.2 | -37.2 | -17.9 | -18.7 | 22.5 |
| 1999 | 33.1 | -10.3 | -6.3 | 2.2 | -8.3 | 42.6 | 4.4 | -7.3 | 3.5 | 21.8 | 6.8 | 31.7 |
| 1998 | -2.9 | 23.1 | -17.1 | 5.4 | -16.3 | -18.0 | 7.9 | -28.9 | 17.1 | 48.2 | -7.6 | 27.3 |
| 1997 | 20.1 | -2.2 | -12.4 | 21.9 | 6.9 | 2.5 | 24.2 | 17.0 | -4.7 | -35.0 | -11.8 | -0.3 |
| 1996 | 13.2 | -18.6 | -5.7 | 27.6 | -6.5 | -13.9 | -18.8 | 4.6 | 13.9 | 7.8 | 46.4 | 0.0 |
| 1995 | 2.0 | 16.0 | 9.1 | -2.0 | 12.5 | 10.8 | 12.3 | -1.4 | -6.1 | 6.5 | -19.3 | -24.5 |
| 1994 | 24.3 | 13.8 | -8.9 | 17.8 | -5.0 | -6.3 | 6.7 | 18.8 | 4.2 | 6.6 | -6.2 | -1.0 |
| 1993 | 2.0 | 3.0 | 10.7 | -14.0 | 46.9 | -4.2 | 15.9 | 10.0 | 18.2 | -15.4 | 8.0 | 16.8 |
| 1992 | 13.5 | -4.0 | -9.3 | -22.7 | 2.9 | 0.0 | -5.7 | -9.1 | 13.3 | 8.8 | 18.9 | 11.4 |
| 1991 | 24.3 | 10.3 | -10.4 | 11.6 | 5.2 | -1.0 | -10.0 | -2.2 | -20.4 | 14.3 | -5.0 | 17.1 |
| 1990 | -15.7 | -1.7 | 19.0 | 7.3 | 28.4 | 1.1 | -6.3 | -32.2 | 0.0 | -6.6 | -8.8 | 34.6 |
| 1989 | 2.1 | 12.5 | -20.4 | 2.3 | 15.9 | -8.8 | -11.8 | 17.1 | 2.1 | -30.6 | -2.9 | 6.1 |
| 1988 | -2.7 | 26.2 | 8.2 | 8.2 | -6.3 | 1.4 | -14.7 | -7.8 | -5.9 | -11.7 | -6.1 | 2.2 |
| 1987 | 67.0 | -5.5 | -1.2 | 1.2 | -7.0 | 2.5 | 2.4 | 13.1 | -16.8 | -39.2 | 2.1 | 12.2 |
| 1986 | -2.2 | -5.6 | 2.4 | 10.3 | -7.3 | -19.1 | -6.9 | 7.5 | -24.3 | 9.2 | 0.8 | -9.2 |
| 1985 | 41.8 | -11.6 | -10.7 | -7.3 | -2.2 | 10.3 | 8.0 | -7.4 | -7.3 | 12.9 | 5.7 | 10.8 |
| 1984 | -19.2 | 8.3 | -6.6 | 10.6 | -14.9 | 12.5 | 1.1 | 22.5 | -7.6 | 1.0 | -3.9 | 0.5 |
| 1983 | 32.5 | 21.6 | 10.5 | 13.1 | 23.9 | 1.6 | -13.3 | 0.0 | 11.2 | -9.0 | 12.9 | 7.8 |
| 1982 | 0.0 | -2.7 | 1.4 | -1.4 | 0.0 | 6.9 | -1.3 | 13.2 | -7.0 | 50.0 | 20.0 | 6.9 |
| 1981 | -12.5 | -1.8 | 23.6 | 0.0 | 2.9 | -18.6 | -5.3 | -16.7 | -11.1 | -10.0 | 0.0 | 2.8 |
| 1980 | · | · | · | · | · | · | · | · | · | 7.2 | 28.6 | -16.3 |
| Avg | 6.7 | 3.1 | 0.5 | 3.5 | 2.5 | 1.8 | 0.9 | -0.4 | -1.8 | 3.3 | 4.0 | 4.3 |
Values in %. Current and first-listed months are partial (greyed).
returnsview.com
KLAC seasonality — average by calendar month
KLA Corporation has monthly history back to 1980. Its strongest month by median is October — positive in 30 of 46 years, median +5.3%, and higher in 7 of the last 9. September is the soft spot, down in 26 of 45 with a median of -2.9%. Across its full record it has closed 55% of months higher, swings ±13.7% in an average month and has fallen 83.7% peak to trough.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg | +6.7% | +3.1% | +0.5% | +3.5% | +2.5% | +1.8% | +0.9% | -0.4% | -1.9% | +3.3% | +4.0% | +4.3% |
| Win rate | 59%/46 | 61%/46 | 52%/46 | 57%/46 | 57%/46 | 54%/46 | 54%/46 | 39%/46 | 42%/45 | 65%/46 | 50%/46 | 70%/46 |
Win rate = share of positive months / sample size.
KLAC risk & extremes
KLAC drawdown & rolling returns
Percent below the all-time high at each month-end — how far underwater the asset was.
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Frequently asked questions
What was KLA Corporation's best month?+
KLA Corporation's strongest completed month on record is January 1987, at +66.97%.
What was KLA Corporation's worst month?+
Its weakest completed month on record is July 2026, at -39.47%.
Is KLA Corporation up this year?+
KLA Corporation is up 50.92% year to date, measured from its last close before 1 January.
What is KLA Corporation's 1-year return?+
+100.16% over the past twelve months, comparing the latest close with the most recent close on or before the same date a year earlier.
What is KLA Corporation's biggest drawdown?+
The deepest peak-to-trough fall on record is 83.7%, measured on month-end closes since 1980.
Which calendar month is historically best for KLA Corporation?+
January has the highest average return across every completed January since 1980. An average is not a forecast.
About KLA Corporation
KLA Corporation is an S&P 500 company, an information technology business worth about $239 billion. It sells the picks and shovels of the digital gold rush — with price receipts on this site going back to 1980. And the long game: $100 at its first close here (1980) would be about $269,764 today.
Did you know?
- Its best month on record was January 1987 at +66.97%; its worst, July 2026 at -39.47%.
- It has closed December in the green 32 out of 46 times — calendar astrology, but the fun kind.
Trivia for entertainment — the numbers come from our price data; the jokes don't.