MKS (MKSI) Historical Monthly & Quarterly Returns
Dividend-adjusted returns by month and quarter. Compare performance across years.
Calculated from 28 years of price history (1999–2026), as of .
MKSI
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +47.3% | +3.9% | 6.0% | +23.5% | +10.4% | — | — | — | — | — | — | — |
| 2025 | +8.5% | 18.8% | 12.7% | 12.5% | +17.5% | +20.9% | 4.2% | +8.8% | +19.8% | +16.1% | +9.0% | +2.2% |
| 2024 | +3.5% | +15.5% | +8.3% | 10.5% | +6.6% | +3.2% | 3.6% | 5.1% | 8.8% | 8.6% | +14.6% | 8.1% |
| 2023 | +20.8% | 5.0% | 8.6% | 5.4% | +16.3% | +11.1% | +1.0% | 8.0% | 13.7% | 24.1% | +26.1% | +24.6% |
| 2022 | 10.8% | 2.9% | 0.4% | 24.0% | +8.6% | 16.9% | +15.2% | 15.6% | 17.0% | 0.6% | +2.4% | +1.0% |
| 2021 | +5.1% | +4.5% | +12.4% | 3.4% | +5.2% | 5.5% | 12.1% | 5.8% | +2.5% | 0.6% | +1.5% | +14.5% |
| 2020 | 4.7% | 4.3% | 18.7% | +23.1% | +5.6% | +7.2% | +12.5% | 6.1% | 8.6% | 0.8% | +27.5% | +9.0% |
| 2019 | +26.3% | +1.7% | +12.3% | 2.2% | 21.3% | +9.0% | +9.3% | 7.8% | +17.9% | +17.3% | 1.6% | +3.5% |
| 2018 | +8.3% | +9.0% | +3.9% | 11.5% | +9.8% | 14.7% | 1.5% | 1.3% | 13.7% | 8.1% | +6.8% | 17.7% |
| 2017 | +10.9% | 0.2% | +4.8% | +13.8% | +4.7% | 17.7% | +24.3% | 1.3% | +14.7% | +15.0% | 13.0% | +0.2% |
| 2016 | 1.5% | 6.7% | +14.4% | 4.7% | +14.8% | +5.1% | +6.1% | +7.1% | +2.0% | +1.5% | +14.4% | +3.2% |
| 2015 | 4.4% | +1.5% | 4.4% | +3.0% | +8.8% | +0.6% | 6.4% | 4.6% | 0.5% | +5.1% | +5.1% | 2.4% |
| 2014 | +0.7% | +0.3% | 0.6% | 5.8% | +3.1% | +8.3% | +1.7% | +7.3% | 1.6% | +9.1% | +0.6% | +0.4% |
| 2013 | +7.8% | 1.8% | +0.3% | 1.2% | +5.4% | 5.7% | +2.2% | 7.0% | +6.2% | +11.4% | +1.0% | +0.5% |
| 2012 | +8.4% | 0.2% | 1.4% | 6.3% | 4.9% | +10.4% | 8.5% | +3.3% | 6.0% | 7.4% | +3.4% | +6.3% |
| 2011 | +17.2% | +5.1% | +10.9% | 14.8% | 6.8% | +0.5% | 5.6% | 6.3% | 6.5% | +22.7% | +1.4% | +3.6% |
| 2010 | 4.6% | +8.7% | +8.7% | +15.8% | 12.4% | 5.8% | +14.7% | 19.6% | +4.2% | +14.8% | 1.4% | +20.3% |
| 2009 | 5.0% | 10.3% | +16.5% | +6.7% | 13.9% | 2.5% | +47.4% | 4.9% | +4.7% | 18.9% | 3.1% | +14.8% |
| 2008 | 2.9% | +8.0% | +6.6% | +6.8% | +3.1% | 7.0% | 6.0% | +9.4% | 11.6% | 6.9% | 22.8% | +3.3% |
| 2007 | 3.2% | +10.3% | +5.8% | +5.6% | +1.1% | +1.7% | 18.1% | 2.9% | 13.7% | +5.6% | 9.5% | +5.4% |
| 2006 | +21.6% | +2.8% | +4.7% | +1.6% | 8.3% | 7.8% | +2.7% | +1.1% | 2.7% | +6.5% | 4.1% | +8.8% |
| 2005 | 15.6% | +18.1% | 14.1% | 6.8% | +12.8% | +1.2% | +13.2% | 7.0% | 3.0% | +9.6% | +0.0% | 5.2% |
| 2004 | 18.5% | +2.2% | 0.6% | 20.0% | +21.6% | 2.3% | 35.5% | 8.7% | +14.1% | +3.3% | +7.3% | +9.2% |
| 2003 | 17.6% | 2.2% | 5.7% | +11.3% | +40.2% | 6.5% | +23.3% | +22.4% | 21.3% | +20.1% | +6.8% | +4.4% |
| 2002 | 11.1% | +11.8% | +27.5% | 1.0% | 9.4% | 34.6% | 15.3% | 20.3% | 19.4% | +20.2% | +45.0% | 13.7% |
| 2001 | +51.7% | 25.5% | +6.9% | +34.8% | +5.9% | +7.9% | 11.1% | 12.6% | 20.6% | +21.6% | +3.8% | +20.6% |
| 2000 | 9.9% | +39.8% | +11.0% | 6.9% | 16.2% | 0.6% | 35.6% | +39.5% | 22.1% | 32.9% | 17.7% | +2.4% |
| 1999 | — | — | 4.8% | +1.8% | +11.9% | +22.2% | +14.3% | 13.7% | +21.1% | 5.6% | +18.5% | +45.2% |
| Avg | +4.7% | +2.4% | +2.8% | +0.4% | +4.3% | 0.7% | +0.9% | 2.2% | 3.1% | +3.2% | +4.5% | +5.8% |
| Median | +0.7% | +1.7% | +4.3% | 1.7% | +5.5% | +0.5% | +1.0% | 5.1% | 3.0% | +5.1% | +2.4% | +3.5% |
| Win % | 52% | 59% | 57% | 43% | 71% | 52% | 52% | 30% | 37% | 59% | 67% | 81% |
2026
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
Avg
Median
Win %
Frequently asked questions
What is the best performing month for MKS (MKSI) stock?
Historically, December is the best performing month for MKS (MKSI) stock with an average return of +5.80%.
What is the worst performing month for MKS (MKSI) stock?
Historically, September is the worst performing month for MKS (MKSI) stock with an average return of 3.10%.
What is the best performing quarter for MKS (MKSI) stock?
Historically, Q4 is the best performing quarter for MKS (MKSI) stock with an average return of +13.93%.
What is the worst performing quarter for MKS (MKSI) stock?
Historically, Q3 is the worst performing quarter for MKS (MKSI) stock with an average return of 4.61%.
What is the best performing year for MKS (MKSI) stock?
Historically, 1999 is the best performing year for MKS (MKSI) stock with a return of +157.03%.
What is the worst performing year for MKS (MKSI) stock?
Historically, 2000 is the worst performing year for MKS (MKSI) stock with a return of 57.11%.
Which month has the highest win rate for MKS (MKSI) stock?
Historically, December has the highest win rate for MKS (MKSI) stock — positive in 81% of years.
Which month has the lowest win rate for MKS (MKSI) stock?
Historically, August has the lowest win rate for MKS (MKSI) stock — positive in 30% of years.
Which quarter has the highest win rate for MKS (MKSI) stock?
Historically, Q4 has the highest win rate for MKS (MKSI) stock — positive in 81% of years.
Which quarter has the lowest win rate for MKS (MKSI) stock?
Historically, Q3 has the lowest win rate for MKS (MKSI) stock — positive in 41% of years.
Data & methodology
How are returns calculated?
We compare the closing price at the end of each period (month or quarter) with the closing price at the end of the previous period. The return is the percentage change. All prices are adjusted for dividends and stock splits. Based on historical prices from our data provider.
What is average vs median?
Average is the arithmetic mean of returns for each period across years. Median is the middle value. Both exclude empty cells. Use median to reduce impact of outliers.
What does the heatmap show?
Green cells indicate positive returns, red cells indicate negative returns. The darker the color, the stronger the move. Average and Median rows summarize each column across years.
What is Win %?
Percentage of years when the period had a positive return. For example, 80% for January means January was positive in 80% of the years in the selected range.
Explore more
MKSI Overview
Company profile, financial tools, and key metrics
MKSI What If Invested
What if you had invested $1,000? See historical returns from any date.
MKSI How It Makes Money
Discover visual breakdown — where revenue comes from and where it goes.
MKSI Price Target Scenarios
Model bear, base, and bull cases with EPS growth and exit P/E — pre-filled from analysts and history.
MKSI Daily Price Character
Explosive · 50.0% historical win rate (green days). Streaks & record days.
MKSI Buybacks
Recent repurchase activity. Shareholder yield & SBC comparison.
MKSI Dividend Profile
Yield: 0.55%. Safety: 5/8. See full history.
MKSI Dividend Calculator
How much dividend income would $1,000 have earned? Calculate from any date.
MKSI Dividend Forecast
Project future income with DRIP, growth assumptions, and optional monthly contributions.
MKSI Dividend Capture
Historical pre-ex touch stats, gap distribution, after-tax calculator, and a backtest simulator (limit-order vs MOC exit).
MKSI Financials
Revenue, EPS, EBITDA, market cap, debt and balance sheet history with annual and quarterly data.