B3 · CSMG3 · stock
Companhia de Saneamento de Minas Gerais (CSMG3) stock price history
Every B3 trading session of Companhia de Saneamento de Minas Gerais from Feb 8, 2006 to Nov 12, 2026: 5,120 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.
CSMG3 adjusted close, 2006 to 2026
- R$67.15
- All time high, 2026
- R$67.52
- 52 week high, R$35.86 low
- 5,120
- Daily sessions since 2006
Last updated Nov 12, 2026, the last stored session. Refreshes after each trading day. Full 2006 to 2026 series and minute bars.
CSMG3 key facts
- Companhia de Saneamento de Minas Gerais (CSMG3) closed at R$54.78 on Nov 12, 2026 on B3.
- CSMG3's all time high close is R$67.15, set on Jul 10, 2026; its all time low close is R$1.18 on Sep 8, 2015.
- CSMG3's 52 week range is R$35.86 to R$67.52.
- CSMG3 returned +49.0% over the year to Nov 12, 2026 and +518.5% over five years.
- Over ten years CSMG3 returned +1,096%, +28.2% a year compounded.
- CSMG3's deepest drawdown was -82.6% from Aug 23, 2012 to Sep 8, 2015.
- DataCedar holds 5,120 daily sessions of CSMG3 history from Feb 8, 2006 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
CSMG3 price chart, 2006 to 2026
CSMG3 returns
Price return from the last close on or before the window start to Nov 12, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -15.1% |
| 3 months | -5.8% |
| 6 months | +4.5% |
| Year to date | +27.2% |
| 1 year | +49.0% |
| 3 years | +290.1% |
| 5 years | +518.5% |
| 10 years | +1,096% |
| Since Feb 8, 2006 | +1,786% |
| Compound annual growth, 20.8 years | +15.2% |
CSMG3 records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- R$67.15 on Jul 10, 2026
- All time low close
- R$1.18 on Sep 8, 2015
- 52 week high
- R$67.52 on Jul 13, 2026
- 52 week low
- R$35.86 on Nov 21, 2025
- Deepest drawdown
- -82.6% from Aug 23, 2012 to Sep 8, 2015, recovered Feb 10, 2017
- Best single session
- +18.8% on Oct 3, 2022
- Worst single session
- -25.5% on Oct 30, 2026
- Volatility, 1 year annualised
- 44.7%
- Sessions closing higher, 1 year
- 56%
- Growth of 1 since 2006
- 18.9×
- Best calendar year
- 2016, +145%
- Worst calendar year
- 2008, -38%
CSMG3 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. 2006 starts on Feb 8, 2006; 2026 runs to Nov 12, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | R$43.07 | R$67.52 | R$41.45 | R$54.78 | +27.2% | 936.3M | 212 |
| 2025 | R$18.99 | R$43.79 | R$17.78 | R$43.07 | +126.8% | 586.8M | 250 |
| 2024 | R$16.45 | R$23.35 | R$15.88 | R$18.99 | +15.5% | 393.1M | 251 |
| 2023 | R$10.75 | R$16.68 | R$9.43 | R$16.44 | +53.1% | 517.2M | 248 |
| 2022 | R$8.49 | R$11.13 | R$7.50 | R$10.74 | +27.1% | 431.9M | 249 |
| 2021 | R$10.28 | R$11.58 | R$8.15 | R$8.44 | -17.4% | 534.8M | 247 |
| 2020 | R$11.89 | R$12.64 | R$5.66 | R$10.22 | -13.7% | 684.9M | 246 |
| 2019 | R$10.36 | R$12.89 | R$9.13 | R$11.84 | +13.6% | 458.9M | 245 |
| 2018 | R$6.76 | R$10.42 | R$6.47 | R$10.42 | +54.6% | 430.1M | 245 |
| 2017 | R$5.21 | R$8.00 | R$4.49 | R$6.74 | +28.1% | 489.8M | 254 |
| 2016 | R$2.15 | R$5.26 | R$1.40 | R$5.26 | +144.9% | 296.7M | 249 |
| 2015 | R$3.46 | R$3.73 | R$1.18 | R$2.15 | -38.1% | 173.4M | 246 |
| 2014 | R$4.96 | R$5.77 | R$2.93 | R$3.47 | -30.0% | 356.2M | 248 |
| 2013 | R$5.80 | R$6.74 | R$3.67 | R$4.96 | -12.5% | 232.2M | 246 |
| 2012 | R$4.16 | R$6.84 | R$4.16 | R$5.68 | +34.8% | 225.2M | 243 |
| 2011 | R$3.53 | R$4.39 | R$3.17 | R$4.21 | +20.6% | 173.3M | 247 |
| 2010 | R$4.04 | R$4.12 | R$2.55 | R$3.49 | -13.0% | 196.6M | 246 |
| 2009 | R$2.27 | R$4.17 | R$2.16 | R$4.01 | +75.4% | 137.1M | 247 |
| 2008 | R$3.68 | R$3.71 | R$1.46 | R$2.29 | -38.4% | 184M | 246 |
| 2007 | R$3.00 | R$4.18 | R$2.66 | R$3.71 | +23.8% | 100.2M | 239 |
| 2006 | R$2.90 | R$3.16 | R$1.62 | R$3.00 | n/a | 556.8M | 216 |
CSMG3 monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| November 2026 | R$54.78 | +13.9% |
| October 2026 | R$48.11 | -14.6% |
| September 2026 | R$56.31 | +2.4% |
| August 2026 | R$54.97 | -13.9% |
| July 2026 | R$63.88 | +7.1% |
| June 2026 | R$59.66 | +14.4% |
| May 2026 | R$52.14 | -2.5% |
| April 2026 | R$53.45 | -6.3% |
| March 2026 | R$57.07 | +6.4% |
| February 2026 | R$53.64 | +6.9% |
| January 2026 | R$50.16 | +16.5% |
| December 2025 | R$43.07 | +7.7% |
About the CSMG3 data
Daily bars. 5,120 sessions from Feb 8, 2006 to Nov 12, 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 Nov 4, 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 Feb 8, 2006, 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/b3%3ACSMG3/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on B3
Common questions
CSMG3 share price history
