What If You Invested $1,000 in SEI Investments (SEIC)?
Enter any amount and start date. We use historical prices to show your hypothetical return.
SEIC
Historical extremes
What if you bought at the best or worst time? Check max profit, max drawdown, and total return since IPO.
Max profit
+77,643%
(777.4 times)
- Buy
- Mar 25, 1981
- $0.12
- Sell
- Jul 10, 2025
- $93.23
Buying SEIC at the best price and selling at the peak would have turned $1,000 into $777,434.96.
Max drawdown
71.17%
(fell to 29% of peak)
- Peak
- Dec 24, 2007
- $26.43
- Trough
- Mar 9, 2009
- $7.62
A $1,000 investment in SEIC at the peak would have shrunk to $288.31 at the trough.
Return since IPO
+75,392%
(754.9 times)
- IPO
- Mar 25, 1981
- $0.12
- Current
- May 22, 2026
- $90.53
A $1,000 investment in SEIC at IPO would be worth $754,919.95 today.
Frequently asked questions
What is SEI Investments (SEIC) stock's all-time high (ATH) and all-time low (ATL)?
SEI Investments (SEIC) stock's all-time low (ATL) was $0.12 on Mar 25, 1981. The all-time high (ATH) was $93.23 on Jul 10, 2025.
What if you invested $1,000 in SEI Investments (SEIC) stock for maximum profit?
Buying SEI Investments (SEIC) stock at the best price ($0.12 on Mar 25, 1981) and selling at the peak ($93.23 on Jul 10, 2025) would have turned $1,000 into $777,434.96. Historical return: +77,643.50% (777.4 times).
What are SEI Investments (SEIC)'s best buy and sell dates for maximum profit?
The best buy date for SEI Investments (SEIC) stock was Mar 25, 1981 at $0.12. The best sell date was Jul 10, 2025 at $93.23. This investment would have returned +77,643.50% (777.4 times).
What was SEI Investments (SEIC) stock's maximum drawdown?
SEI Investments (SEIC) stock's worst decline was 71.17% (fell to 29% of peak) from peak to trough. Peak: $26.43 on Dec 24, 2007. Trough: $7.62 on Mar 9, 2009. A $1,000 investment at the peak would have been worth $288.31 at the trough.
What if you bought SEI Investments (SEIC) stock at IPO?
A $1,000 investment in SEI Investments (SEIC) stock at IPO ($0.12 on Mar 25, 1981) would be worth $754,919.95 today. Historical return: +75,391.99% (754.9 times). Current stock price: $90.53 as of May 22, 2026.
What if you invested $1,000 in SEI Investments (SEIC) 5 years ago?
A $1,000 investment in SEI Investments (SEIC) stock 5 years ago ($58.93 on May 21, 2021) would be worth $1,536.23 today. Historical return: +53.62% (1.53 times). Current stock price: $90.53 as of May 22, 2026.
What if you invested $1,000 in SEI Investments (SEIC) 10 years ago?
A $1,000 investment in SEI Investments (SEIC) stock 10 years ago ($44.4 on May 20, 2016) would be worth $2,038.96 today. Historical return: +103.90% (2.03 times). Current stock price: $90.53 as of May 22, 2026.
What if you invested $1,000 in SEI Investments (SEIC) 20 years ago?
A $1,000 investment in SEI Investments (SEIC) stock 20 years ago ($17.33 on May 22, 2006) would be worth $5,223.89 today. Historical return: +422.39% (5.22 times). Current stock price: $90.53 as of May 22, 2026.
Data & methodology
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: the best buy and sell dates that maximize percentage return. Max drawdown: the largest peak-to-trough decline in price. Return since IPO: 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 dividend-adjusted closing prices from our data provider. The calculator and Historical extremes use the same data source for consistent results.
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 SEIC. You can select any date between our first and most recent data point.
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