Borsa Italiana · 1FORT · stock

Fortum Oyj (1FORT) stock price history

Every Borsa Italiana trading session of Fortum Oyj from Nov 28, 2023 to Sep 25, 2026: 715 daily bars, adjusted for splits and dividends, with minute bars from Sep 18, 2026 forward. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.

1FORT adjusted close, 2023 to 2026

1FORTFortum Oyj
€23.37+60.4% over one year
202420252026
€25.02
All time high, 2026
€25.38
52 week high, €14.57 low
715
Daily sessions since 2023

Last updated Sep 25, 2026, the last stored session. Refreshes after each trading day. Full 2023 to 2026 series and minute bars.

1FORT key facts

  • Fortum Oyj (1FORT) closed at €23.37 on Sep 25, 2026 on Borsa Italiana.
  • 1FORT's all time high close is €25.02, set on Sep 9, 2026; its all time low close is €8.82 on Feb 19, 2024.
  • 1FORT's 52 week range is €14.57 to €25.38.
  • 1FORT returned +60.4% over the year to Sep 25, 2026.
  • Since Nov 28, 2023 1FORT returned +131%, +34.4% a year compounded.
  • 1FORT's deepest drawdown was -21.4% from Jan 11, 2024 to Feb 19, 2024.
  • DataCedar holds 715 daily sessions of 1FORT history from Nov 28, 2023 and minute bars from Sep 18, 2026, adjusted for splits and dividends, served by the API under a key.

1FORT price chart, 2023 to 2026

1FORT adjusted close, Nov 28, 2023 to Sep 25, 2026€8.82€14.03€19.23€24.432023202420252026
Adjusted daily close. 260 sampled points across the full history; the API serves every session.

1FORT returns

Price return from the last close on or before the window start to Sep 25, 2026, on adjusted closes.

PeriodReturn
1 month+18.4%
3 months+17.4%
6 months+8.6%
Year to date+34.4%
1 year+60.4%
3 yearsn/a
5 yearsn/a
10 yearsn/a
Since Nov 28, 2023+130.8%
Compound annual growth, 2.8 years+34.4%

1FORT records

Measured on the stored closes; every figure is reproducible from the API series.

All time high close
€25.02 on Sep 9, 2026
All time low close
€8.82 on Feb 19, 2024
52 week high
€25.38 on Sep 10, 2026
52 week low
€14.57 on Sep 29, 2025
Deepest drawdown
-21.4% from Jan 11, 2024 to Feb 19, 2024, recovered May 16, 2024
Best single session
+21.0% on Sep 9, 2026
Worst single session
-11.3% on Feb 19, 2024
Volatility, 1 year annualised
35.6%
Sessions closing higher, 1 year
15%
Growth of 1 since 2023
2.3×
Best calendar year
2025, +40%
Worst calendar year
2024, +18%

1FORT price history by year

Open is the first session's open, high and low span the year, close is the last session's close, and the return is close over the previous year's close. 2023 starts on Nov 28, 2023; 2026 runs to Sep 25, 2026.

YearOpenHighLowCloseReturnVolumeSessions
2026€17.39€25.38€17.39€23.37+34.4%11.7K188
2025€12.39€19.45€11.63€17.39+40.4%68.2K252
2024€10.48€13.02€8.82€12.39+18.2%15.3K253
2023€10.14€10.82€10.13€10.48n/a2.6K22

1FORT monthly closes, last 12 months

MonthMonth end closeChange
September 2026€23.37+13.1%
August 2026€20.67+5.6%
July 2026€19.58-1.6%
June 2026€19.91-4.1%
May 2026€20.76-2.2%
April 2026€21.23-1.3%
March 2026€21.51+10.6%
February 2026€19.45+0.1%
January 2026€19.43+11.8%
December 2025€17.39+1.8%
November 2025€17.07-9.1%
October 2025€18.79+29.0%

About the 1FORT data

Daily bars. 715 sessions from Nov 28, 2023 to Sep 25, 2026, one row per Borsa Italiana trading day with open, high, low, close and volume. Prices are adjusted for splits and cash dividends so the series is comparable across its whole length; the API also serves the raw, split only and dividend only views.

Minute bars. Stored from Sep 18, 2026 forward, most recent session Sep 25, 2026. Minute history is captured from the day collection began and is never backfilled, so this start date is exact. Five minute, fifteen minute and hourly bars are derived from these minutes.

Time and currency. Session dates are Borsa Italiana trading days; minute timestamps are UTC. Prices are in EUR. Volume is shares traded on the session.

Get the data. The REST endpoint returns the daily series as JSON with pagination; a free key serves the last year, Quant and above the full history back to Nov 28, 2023, and minute bars come with the paid windows. It takes timeframe (1Min, 5Min, 15Min, 1Hour, 1Day), adjustment, start and end. See the bars endpoint and authentication, and pricing for the plan windows.

curl "https://api.datacedar.com/v3/stocks/1FORT/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

Nearby on Borsa Italiana

Common questions

1FORT share price history

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