B3 · CMIN3 · stock
CSN Mineração S.A. (CMIN3) stock price history
Every B3 trading session of CSN Mineração S.A. from Feb 22, 2021 to Sep 28, 2026: 1,399 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.
CMIN3 adjusted close, 2021 to 2026
- R$6.99
- All time high, 2026
- R$7.07
- 52 week high, R$4.08 low
- 1,399
- Daily sessions since 2021
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2021 to 2026 series and minute bars.
CMIN3 key facts
- CSN Mineração S.A. (CMIN3) closed at R$5.05 on Sep 28, 2026 on B3.
- CMIN3's all time high close is R$6.99, set on Sep 10, 2026; its all time low close is R$1.96 on Sep 29, 2022.
- CMIN3's 52 week range is R$4.08 to R$7.07.
- CMIN3 returned +2.3% over the year to Sep 28, 2026 and +56.6% over five years.
- Since Feb 22, 2021 CMIN3 returned +4%, +0.7% a year compounded.
- CMIN3's deepest drawdown was -65.8% from May 11, 2021 to Sep 29, 2022.
- DataCedar holds 1,399 daily sessions of CMIN3 history from Feb 22, 2021 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
CMIN3 price chart, 2021 to 2026
CMIN3 returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -15.8% |
| 3 months | +18.8% |
| 6 months | +7.2% |
| Year to date | -3.2% |
| 1 year | +2.3% |
| 3 years | +43.2% |
| 5 years | +56.6% |
| 10 years | n/a |
| Since Feb 22, 2021 | +3.8% |
| Compound annual growth, 5.6 years | +0.7% |
CMIN3 records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- R$6.99 on Sep 10, 2026
- All time low close
- R$1.96 on Sep 29, 2022
- 52 week high
- R$7.07 on Sep 11, 2026
- 52 week low
- R$4.08 on May 19, 2026
- Deepest drawdown
- -65.8% from May 11, 2021 to Sep 29, 2022, recovered Dec 19, 2023
- Best single session
- +10.8% on Aug 24, 2021
- Worst single session
- -9.3% on May 18, 2026
- Volatility, 1 year annualised
- 41.2%
- Sessions closing higher, 1 year
- 49%
- Best calendar year
- 2023, +119%
- Worst calendar year
- 2024, -25%
CMIN3 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. 2021 starts on Feb 22, 2021; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | R$5.22 | R$7.07 | R$4.08 | R$5.05 | -3.2% | 1.6B | 185 |
| 2025 | R$4.60 | R$5.81 | R$4.10 | R$5.22 | +14.4% | 1.6B | 250 |
| 2024 | R$6.15 | R$6.35 | R$3.77 | R$4.56 | -25.4% | 2.4B | 251 |
| 2023 | R$2.80 | R$6.22 | R$2.67 | R$6.11 | +119.2% | 2.1B | 248 |
| 2022 | R$3.78 | R$4.20 | R$1.92 | R$2.79 | -25.2% | 2.1B | 250 |
| 2021 | R$4.67 | R$5.86 | R$2.71 | R$3.73 | n/a | 1.9B | 215 |
CMIN3 monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | R$5.05 | -14.7% |
| August 2026 | R$5.92 | +3.7% |
| July 2026 | R$5.71 | +36.6% |
| June 2026 | R$4.18 | -10.3% |
| May 2026 | R$4.66 | -0.2% |
| April 2026 | R$4.67 | -2.9% |
| March 2026 | R$4.81 | -9.0% |
| February 2026 | R$5.28 | -7.6% |
| January 2026 | R$5.72 | +9.7% |
| December 2025 | R$5.22 | +0.9% |
| November 2025 | R$5.17 | -8.4% |
| October 2025 | R$5.64 | +9.8% |
About the CMIN3 data
Daily bars. 1,399 sessions from Feb 22, 2021 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 Feb 22, 2021, 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/CMIN3/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on B3
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Common questions
CMIN3 share price history
