How is this result calculated?
The calculator estimates the units bought on the selected date and values them with the latest available market price.
BIST 100 return calculator
BIST 100 Investment Calculator: Historical Returns
Change the amount and date to see the current value, profit or loss, and return multiple for BIST 100.
Calculate for free✓Historical and current price
✓Profit, loss and return multiple
✓Visible source and update time
A calculation you can check: XU100.IS
Fixed historical example: 2–4 January 2024. This is not today’s value or a return forecast. Daily closes are shown below; arithmetic uses the unrounded observations.
| Observation date | Close (TRY) | Contribution (TRY) | Calculated units |
|---|---|---|---|
| 2024-01-02 | 7,624.2998 | 1,000.00 | 0.13115959 |
| 2024-01-03 | 7,412.0000 | 0.00 | 0.00000000 |
| 2024-01-04 | 7,547.7998 | 0.00 | 0.00000000 |
- Total contributed
- 1,000.00 TRY
- Value on 4 January 2024
- 989.97 TRY
- Gross profit / loss
- -10.03 TRY
1000 ÷ 7,624.2998 = 0.13115959
0.13115959 × 7,547.7998 = 989.97 TRY
No currency conversion, tax, fees or inflation adjustment. Different providers and closing times may produce different results. Index units are a mathematical exposure, not shares you can buy directly. Reinvested dividends and ETF tracking differences are excluded.
Source data (Yahoo Finance) · Retrieved: 2026-09-14
Open the calculatorHow to use
- 1Choose the amount and currency.
- 2Enter a date in the past.
- 3Calculate the result with historical and current prices.
Frequently asked questions
How to read the result
The calculator estimates units purchasable at the historical price and values them at the latest valid market price. It is a historical simulation, not a forecast.
Tax, broker commission, bid-ask spread and custody costs vary by user and are excluded by default.
Start date can materially change the outcome. Test multiple dates, compare DCA and review inflation separately.
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