Borsa Italiana · 1BAYN · stock
Bayer Aktiengesellschaft (1BAYN) stock price history
Every Borsa Italiana trading session of Bayer Aktiengesellschaft from Aug 8, 2007 to Sep 29, 2026: 4,860 daily bars, adjusted for splits and dividends, with minute bars from Sep 17, 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.
1BAYN adjusted close, 2007 to 2026
- €100.70
- All time high, 2015
- €53.98
- 52 week high, €25.75 low
- 4,860
- Daily sessions since 2007
Last updated Sep 29, 2026, the last stored session. Refreshes after each trading day. Full 2007 to 2026 series and minute bars.
1BAYN key facts
- Bayer Aktiengesellschaft (1BAYN) closed at €48.88 on Sep 29, 2026 on Borsa Italiana.
- 1BAYN's all time high close is €100.70, set on Apr 10, 2015; its all time low close is €18.71 on Dec 19, 2024.
- 1BAYN's 52 week range is €25.75 to €53.98.
- 1BAYN returned +76.6% over the year to Sep 29, 2026 and +12.7% over five years.
- Over ten years 1BAYN returned -26%, -3.0% a year compounded.
- 1BAYN's deepest drawdown was -81.4% from Apr 10, 2015 to Dec 19, 2024.
- DataCedar holds 4,860 daily sessions of 1BAYN history from Aug 8, 2007 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
1BAYN price chart, 2007 to 2026
1BAYN returns
Price return from the last close on or before the window start to Sep 29, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +0.5% |
| 3 months | +6.4% |
| 6 months | +28.1% |
| Year to date | +33.6% |
| 1 year | +76.6% |
| 3 years | +8.8% |
| 5 years | +12.7% |
| 10 years | -26.0% |
| Since Aug 8, 2007 | +63.1% |
| Compound annual growth, 19.1 years | +2.6% |
1BAYN records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- €100.70 on Apr 10, 2015
- All time low close
- €18.71 on Dec 19, 2024
- 52 week high
- €53.98 on Jul 3, 2026
- 52 week low
- €25.75 on Nov 7, 2025
- Deepest drawdown
- -81.4% from Apr 10, 2015 to Dec 19, 2024, not yet recovered
- Best single session
- +18.4% on Jun 25, 2026
- Worst single session
- -18.6% on Nov 20, 2023
- Volatility, 1 year annualised
- 40.1%
- Sessions closing higher, 1 year
- 49%
- Best calendar year
- 2025, +93%
- Worst calendar year
- 2024, -44%
1BAYN 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. 2007 starts on Aug 8, 2007; 2026 runs to Sep 29, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | €36.77 | €53.98 | €32.86 | €48.88 | +33.6% | 6M | 190 |
| 2025 | €19.13 | €37.01 | €18.30 | €36.60 | +93.2% | 12.7M | 252 |
| 2024 | €33.61 | €35.59 | €18.18 | €18.94 | -43.7% | 11.4M | 253 |
| 2023 | €45.83 | €61.98 | €29.95 | €33.67 | -27.9% | 3.2M | 254 |
| 2022 | €43.23 | €63.75 | €43.23 | €46.73 | +8.5% | 2.3M | 256 |
| 2021 | €43.23 | €52.76 | €40.16 | €43.07 | -0.2% | 3.9M | 256 |
| 2020 | €60.86 | €65.85 | €34.61 | €43.15 | -28.5% | 2.8M | 255 |
| 2019 | €48.46 | €62.57 | €43.33 | €60.31 | +24.5% | 2.6M | 252 |
| 2018 | €79.48 | €84.79 | €46.93 | €48.46 | -40.0% | 1.3M | 252 |
| 2017 | €74.12 | €95.25 | €74.12 | €80.79 | +9.1% | 425.1K | 254 |
| 2016 | €80.23 | €80.87 | €62.93 | €74.05 | -11.5% | 914.5K | 256 |
| 2015 | €78.78 | €102.50 | €75.32 | €83.66 | +6.4% | 658.4K | 255 |
| 2014 | €67.97 | €83.96 | €59.62 | €78.64 | +15.9% | 536.1K | 252 |
| 2013 | €46.77 | €69.56 | €44.54 | €67.84 | +46.7% | 409.9K | 252 |
| 2012 | €31.25 | €47.19 | €30.81 | €46.26 | +51.0% | 376.3K | 253 |
| 2011 | €33.83 | €37.35 | €22.47 | €30.63 | -9.0% | 627.8K | 256 |
| 2010 | €33.26 | €36.70 | €26.55 | €33.65 | +1.2% | 408.6K | 256 |
| 2009 | €24.56 | €33.62 | €19.01 | €33.26 | +42.1% | 692.6K | 254 |
| 2008 | €34.82 | €36.89 | €20.00 | €23.40 | -32.9% | 545.7K | 253 |
| 2007 | €29.97 | €35.15 | €29.26 | €34.89 | n/a | 174.7K | 99 |
1BAYN monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | €48.88 | +1.5% |
| August 2026 | €48.15 | -1.1% |
| July 2026 | €48.70 | +1.0% |
| June 2026 | €48.21 | +32.2% |
| May 2026 | €36.47 | -4.3% |
| April 2026 | €38.10 | -3.2% |
| March 2026 | €39.36 | -6.1% |
| February 2026 | €41.91 | -5.4% |
| January 2026 | €44.29 | +21.0% |
| December 2025 | €36.60 | +19.5% |
| November 2025 | €30.62 | +13.9% |
| October 2025 | €26.88 | -3.7% |
About the 1BAYN data
Daily bars. 4,860 sessions from Aug 8, 2007 to Sep 29, 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 17, 2026 forward, most recent session Sep 28, 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 Aug 8, 2007, 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/1BAYN/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Borsa Italiana
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Common questions
1BAYN share price history
