What If You Invested $1,000 in KLA (KLAC)?
Enter any amount and start date. We use historical prices to show your hypothetical return.
KLA
KLAC
Historical extremes
Maximum profit (buy at all-time low, sell at peak), maximum drawdown (peak to trough), and total return from IPO to current price.
Max profit
+529935.87% (5,300 times)
- Buy
- Mar 11, 1982
- $0.32
- Sell
- Jan 29, 2026
- $1,684.71
Buying KLAC at the all-time low and selling at the peak would have turned $1,000 into $5,300,358.65.
Max drawdown
-83.74% (fell to 16% of peak)
- Peak
- Apr 7, 2000
- $51.26
- Trough
- Nov 19, 2008
- $8.34
The worst decline for KLAC was -83.74% (fell to 16% of peak) from peak to trough.
IPO to current
+236337.72% (2,364 times)
- IPO
- Oct 8, 1980
- $0.61
- Current
- Mar 16, 2026
- $1,438.24
A $1,000 investment in KLAC at IPO would be worth $2,364,377.16 today.
Dollar amounts based on selected investment ($1,000)
Frequently asked questions
What is KLA (KLAC) stock's all-time high and all-time low?
- KLA (KLAC) stock's all-time low was $0.32 on Mar 11, 1982. The all-time high was $1,684.71 on Jan 29, 2026.
What if you invested $1,000 in KLA (KLAC) stock at the all-time low?
- Buying KLA (KLAC) stock at the all-time low ($0.32 on Mar 11, 1982) and selling at the peak ($1,684.71 on Jan 29, 2026) would have turned $1,000 into $5,300,358.65. Historical return: +529935.87% (5,300 times).
What are KLA (KLAC)'s best buy and sell dates for maximum profit?
- The best buy date for KLA (KLAC) stock was Mar 11, 1982 (all-time low at $0.32). The best sell date was Jan 29, 2026 at $1,684.71. This investment would have returned +529935.87% (5,300 times).
What was KLA (KLAC) stock's maximum drawdown?
- KLA (KLAC) stock's worst decline was -83.74% (fell to 16% of peak) from peak to trough. Peak: $51.26 on Apr 7, 2000. Trough: $8.34 on Nov 19, 2008. A $1,000 investment at the peak would have been worth $162.61 at the trough.
What if you bought KLA (KLAC) stock at IPO?
- A $1,000 investment in KLA (KLAC) stock at IPO ($0.61 on Oct 8, 1980) would be worth $2,364,377.16 today. Historical return: +236337.72% (2,364 times). Current stock price: $1,438.24 as of Mar 16, 2026.
What if you invested $1,000 in KLA (KLAC) 5 years ago?
- A $1,000 investment in KLA (KLAC) stock 5 years ago ($286.89 on Mar 16, 2021) would be worth $5,013.19 today. Historical return: +401.32% (5.01 times). Current stock price: $1,438.24 as of Mar 16, 2026.
What if you invested $1,000 in KLA (KLAC) 10 years ago?
- A $1,000 investment in KLA (KLAC) stock 10 years ago ($59.21 on Mar 16, 2016) would be worth $24,289.13 today. Historical return: +2328.91% (24.3 times). Current stock price: $1,438.24 as of Mar 16, 2026.
What if you invested $1,000 in KLA (KLAC) 20 years ago?
- A $1,000 investment in KLA (KLAC) stock 20 years ago ($25.87 on Mar 16, 2006) would be worth $55,603.96 today. Historical return: +5460.40% (55.6 times). Current stock price: $1,438.24 as of Mar 16, 2026.
About this data
- How does the investment calculator work?
- Enter an investment amount and a start date. We use historical stock prices to calculate how many shares you would have bought, then apply the current price to show your hypothetical portfolio value and return.
- What are Historical extremes?
- Max profit: buy at all-time low, sell at the highest price after. Max drawdown: the largest peak-to-trough decline in price. IPO to current: total return from IPO date to the latest price.
- What is Max drawdown?
- Maximum drawdown is the largest peak-to-trough decline in price. It shows the worst drop from any prior high to a subsequent low. Peak and Trough are the dates and prices at which this decline occurred.
- Does this include dividends?
- The calculator uses adjusted closing prices when available, which account for stock splits and dividends. For the most accurate results, we recommend using data that includes dividend adjustments.
- Where does the price data come from?
- Historical prices are from Yahoo Finance, adjusted for stock splits and dividends. We use adjusted close for all calculations.
- How are the dollar amounts in the cards calculated?
- The dollar amounts in Historical extremes use the investment amount you select in the calculator above (e.g. $1,000). They show what your investment would have been worth at the Buy/Peak/IPO date versus the Sell/Trough/Current date.
- What date range can I use?
- The available date range depends on our historical price data for KLAC. You can select any date between our first and most recent data point.