B3 · CTAX3 · stock
Contax Participações S.A. (CTAX3) stock price history
Every B3 trading session of Contax Participações S.A. from Apr 8, 2009 to Nov 12, 2026: 4,313 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.
CTAX3 adjusted close, 2009 to 2026
- R$148,649
- All time high, 2013
- R$3.90
- 52 week high, R$0.8000 low
- 4,313
- Daily sessions since 2009
Last updated Nov 12, 2026, the last stored session. Refreshes after each trading day. Full 2009 to 2026 series and minute bars.
CTAX3 key facts
- Contax Participações S.A. (CTAX3) closed at R$0.8400 on Nov 12, 2026 on B3.
- CTAX3's all time high close is R$148,649, set on Aug 7, 2013; its all time low close is R$0.8000 on Oct 30, 2026.
- CTAX3's 52 week range is R$0.8000 to R$3.90.
- CTAX3 returned -78.3% over the year to Nov 12, 2026 and -94.0% over five years.
- Over ten years CTAX3 returned -100%, -50.7% a year compounded.
- CTAX3's deepest drawdown was -100.0% from Aug 7, 2013 to Oct 30, 2026.
- DataCedar holds 4,313 daily sessions of CTAX3 history from Apr 8, 2009 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
CTAX3 price chart, 2009 to 2026
CTAX3 returns
Price return from the last close on or before the window start to Nov 12, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -31.1% |
| 3 months | -46.5% |
| 6 months | -57.3% |
| Year to date | -74.0% |
| 1 year | -78.3% |
| 3 years | -92.3% |
| 5 years | -94.0% |
| 10 years | -99.9% |
| Since Apr 8, 2009 | -100.0% |
| Compound annual growth, 17.6 years | -42.4% |
CTAX3 records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- R$148,649 on Aug 7, 2013
- All time low close
- R$0.8000 on Oct 30, 2026
- 52 week high
- R$3.90 on Nov 19, 2025
- 52 week low
- R$0.8000 on Oct 30, 2026
- Deepest drawdown
- -100.0% from Aug 7, 2013 to Oct 30, 2026, not yet recovered
- Best single session
- +328.2% on Aug 7, 2013
- Worst single session
- -74.7% on Aug 8, 2013
- Volatility, 1 year annualised
- 102.9%
- Sessions closing higher, 1 year
- 31%
- Best calendar year
- 2023, +252%
- Worst calendar year
- 2015, -97%
CTAX3 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. 2009 starts on Apr 8, 2009; 2026 runs to Nov 12, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | R$3.23 | R$3.33 | R$0.8000 | R$0.8400 | -74.0% | 1.2M | 212 |
| 2025 | R$3.60 | R$4.50 | R$3.00 | R$3.23 | -20.5% | 648.5K | 250 |
| 2024 | R$15.17 | R$15.53 | R$3.33 | R$4.07 | -72.9% | 1.3M | 251 |
| 2023 | R$4.07 | R$15.00 | R$2.67 | R$15.00 | +251.6% | 7.7M | 248 |
| 2022 | R$8.83 | R$11.77 | R$3.27 | R$4.27 | -50.8% | 2.9M | 250 |
| 2021 | R$7.80 | R$46.63 | R$7.80 | R$8.67 | +13.0% | 8M | 247 |
| 2020 | R$30.33 | R$33.30 | R$7.47 | R$7.67 | -74.1% | 1.7M | 248 |
| 2019 | R$82.00 | R$164.00 | R$28.33 | R$29.63 | -64.7% | 3.1M | 248 |
| 2018 | R$370.00 | R$509.01 | R$57.00 | R$84.00 | -77.2% | 847.8K | 246 |
| 2017 | R$960.01 | R$1,048 | R$365.00 | R$368.00 | -60.9% | 94.4K | 254 |
| 2016 | R$1,300 | R$2,100 | R$600.01 | R$940.01 | -21.7% | 91.1K | 249 |
| 2015 | R$43,789 | R$43,789 | R$1,200 | R$1,200 | -97.3% | 178 | 246 |
| 2014 | R$50,668 | R$56,197 | R$32,330 | R$43,789 | -11.8% | 1 | 248 |
| 2013 | R$40,704 | R$149,556 | R$30,818 | R$49,671 | +28.8% | 153 | 247 |
| 2012 | R$32,200 | R$43,171 | R$29,336 | R$38,560 | +24.3% | 1.5K | 239 |
| 2011 | R$43,156 | R$43,210 | R$25,578 | R$31,017 | -28.1% | 1.3K | 235 |
| 2010 | R$32,258 | R$46,528 | R$28,813 | R$43,156 | +33.8% | 2K | 242 |
| 2009 | R$12,945 | R$32,258 | R$12,945 | R$32,258 | n/a | 1.4K | 153 |
CTAX3 monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| November 2026 | R$0.8400 | +5.0% |
| October 2026 | R$0.8000 | -56.5% |
| September 2026 | R$1.84 | +30.5% |
| August 2026 | R$1.41 | +28.2% |
| July 2026 | R$1.10 | -29.8% |
| June 2026 | R$1.57 | -16.1% |
| May 2026 | R$1.87 | -15.2% |
| April 2026 | R$2.20 | -10.8% |
| March 2026 | R$2.47 | -14.9% |
| February 2026 | R$2.90 | -10.3% |
| January 2026 | R$3.23 | 0.0% |
| December 2025 | R$3.23 | -5.8% |
About the CTAX3 data
Daily bars. 4,313 sessions from Apr 8, 2009 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 Apr 8, 2009, 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%3ACTAX3/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on B3
Common questions
CTAX3 share price history
