B3 · CSAN3 · stock
Cosan S.A. (CSAN3) stock price history
Every B3 trading session of Cosan S.A. from Nov 18, 2005 to Sep 28, 2026: 5,189 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.
CSAN3 adjusted close, 2005 to 2026
- R$24.59
- All time high, 2021
- R$6.90
- 52 week high, R$3.09 low
- 5,189
- Daily sessions since 2005
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2005 to 2026 series and minute bars.
CSAN3 key facts
- Cosan S.A. (CSAN3) closed at R$3.74 on Sep 28, 2026 on B3.
- CSAN3's all time high close is R$24.59, set on Jul 22, 2021; its all time low close is R$1.25 on Oct 27, 2008.
- CSAN3's 52 week range is R$3.09 to R$6.90.
- CSAN3 returned -39.7% over the year to Sep 28, 2026 and -81.9% over five years.
- Over ten years CSAN3 returned -50%, -6.8% a year compounded.
- CSAN3's deepest drawdown was -87.3% from Jul 22, 2021 to Aug 18, 2026.
- DataCedar holds 5,189 daily sessions of CSAN3 history from Nov 18, 2005 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
CSAN3 price chart, 2005 to 2026
CSAN3 returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -0.8% |
| 3 months | -0.5% |
| 6 months | -26.8% |
| Year to date | -29.7% |
| 1 year | -39.7% |
| 3 years | -77.1% |
| 5 years | -81.9% |
| 10 years | -50.4% |
| Since Nov 18, 2005 | +40.1% |
| Compound annual growth, 20.9 years | +1.6% |
CSAN3 records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- R$24.59 on Jul 22, 2021
- All time low close
- R$1.25 on Oct 27, 2008
- 52 week high
- R$6.90 on Feb 24, 2026
- 52 week low
- R$3.09 on Aug 18, 2026
- Deepest drawdown
- -87.3% from Jul 22, 2021 to Aug 18, 2026, not yet recovered
- Best single session
- +23.0% on Oct 28, 2008
- Worst single session
- -18.4% on Mar 12, 2020
- Volatility, 1 year annualised
- 46.5%
- Sessions closing higher, 1 year
- 43%
- Best calendar year
- 2009, +123%
- Worst calendar year
- 2024, -56%
CSAN3 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. 2005 starts on Nov 18, 2005; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | R$5.35 | R$6.90 | R$3.09 | R$3.74 | -29.7% | 6.3B | 185 |
| 2025 | R$8.18 | R$9.32 | R$5.14 | R$5.32 | -34.8% | 6.6B | 250 |
| 2024 | R$18.72 | R$19.21 | R$8.10 | R$8.16 | -56.4% | 2.7B | 251 |
| 2023 | R$15.97 | R$20.10 | R$12.65 | R$18.70 | +16.2% | 2.1B | 248 |
| 2022 | R$20.02 | R$23.19 | R$14.32 | R$16.10 | -19.3% | 2.2B | 250 |
| 2021 | R$17.09 | R$24.76 | R$16.76 | R$19.94 | +17.9% | 2.4B | 247 |
| 2020 | R$15.42 | R$20.54 | R$9.13 | R$16.92 | +11.2% | 2B | 248 |
| 2019 | R$7.15 | R$15.43 | R$7.12 | R$15.22 | +112.5% | 1.6B | 248 |
| 2018 | R$8.72 | R$10.06 | R$6.75 | R$7.16 | -17.1% | 1.5B | 246 |
| 2017 | R$7.63 | R$8.82 | R$6.22 | R$8.63 | +11.6% | 1.2B | 254 |
| 2016 | R$4.72 | R$8.83 | R$4.09 | R$7.74 | +62.3% | 1B | 249 |
| 2015 | R$5.23 | R$5.59 | R$3.16 | R$4.77 | -10.0% | 1.4B | 246 |
| 2014 | R$6.32 | R$7.72 | R$4.59 | R$5.30 | -16.3% | 1.8B | 248 |
| 2013 | R$6.59 | R$7.74 | R$6.23 | R$6.32 | -3.3% | 1.3B | 248 |
| 2012 | R$4.13 | R$6.72 | R$4.04 | R$6.54 | +58.2% | 1.2B | 245 |
| 2011 | R$4.20 | R$4.34 | R$2.89 | R$4.14 | +0.1% | 1.2B | 249 |
| 2010 | R$3.72 | R$4.37 | R$2.60 | R$4.13 | +12.9% | 1.4B | 247 |
| 2009 | R$1.60 | R$3.66 | R$1.30 | R$3.66 | +122.5% | 1.4B | 248 |
| 2008 | R$3.02 | R$4.99 | R$1.17 | R$1.64 | -46.0% | 1.2B | 249 |
| 2007 | R$6.50 | R$6.86 | R$2.70 | R$3.04 | -52.7% | 1.3B | 245 |
| 2006 | R$3.26 | R$9.11 | R$3.19 | R$6.44 | +96.8% | 34.8B | 258 |
| 2005 | R$2.54 | R$3.36 | R$2.54 | R$3.27 | n/a | 693.6M | 30 |
CSAN3 monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | R$3.74 | -4.1% |
| August 2026 | R$3.90 | -4.2% |
| July 2026 | R$4.07 | +10.0% |
| June 2026 | R$3.70 | -2.6% |
| May 2026 | R$3.80 | -24.6% |
| April 2026 | R$5.04 | -6.3% |
| March 2026 | R$5.38 | -14.5% |
| February 2026 | R$6.29 | +6.6% |
| January 2026 | R$5.90 | +10.9% |
| December 2025 | R$5.32 | -13.6% |
| November 2025 | R$6.16 | +0.2% |
| October 2025 | R$6.15 | -0.3% |
About the CSAN3 data
Daily bars. 5,189 sessions from Nov 18, 2005 to Sep 28, 2026, one row per B3 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 B3 trading days; minute timestamps are UTC. Prices are in BRL. 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 18, 2005, 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/CSAN3/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on B3
Common questions
CSAN3 share price history
