B3 · A1LN34 · stock
Alnylam Pharmaceuticals, Inc. (A1LN34) stock price history
Every B3 trading session of Alnylam Pharmaceuticals, Inc. from Oct 14, 2020 to Sep 25, 2026: 1,482 daily bars, adjusted for splits and dividends, with minute bars from Sep 23, 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.
A1LN34 adjusted close, 2020 to 2026
- R$132.40
- All time high, 2025
- R$132.40
- 52 week high, R$50.25 low
- 1,482
- Daily sessions since 2020
Last updated Sep 25, 2026, the last stored session. Refreshes after each trading day. Full 2020 to 2026 series and minute bars.
A1LN34 key facts
- Alnylam Pharmaceuticals, Inc. (A1LN34) closed at R$63.72 on Sep 25, 2026 on B3.
- A1LN34's all time high close is R$132.40, set on Oct 16, 2025; its all time low close is R$29.85 on May 31, 2022.
- A1LN34's 52 week range is R$50.25 to R$132.40.
- A1LN34 returned -46.9% over the year to Sep 25, 2026 and +29.8% over five years.
- Since Oct 14, 2020 A1LN34 returned +57%, +7.9% a year compounded.
- A1LN34's deepest drawdown was -62.0% from Oct 16, 2025 to Jul 30, 2026.
- DataCedar holds 1,482 daily sessions of A1LN34 history from Oct 14, 2020 and minute bars from Sep 23, 2026, adjusted for splits and dividends, served by the API under a key.
A1LN34 price chart, 2020 to 2026
A1LN34 returns
Price return from the last close on or before the window start to Sep 25, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +4.2% |
| 3 months | -16.1% |
| 6 months | -23.6% |
| Year to date | -42.8% |
| 1 year | -46.9% |
| 3 years | +49.3% |
| 5 years | +29.8% |
| 10 years | n/a |
| Since Oct 14, 2020 | +56.8% |
| Compound annual growth, 5.9 years | +7.9% |
A1LN34 records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- R$132.40 on Oct 16, 2025
- All time low close
- R$29.85 on May 31, 2022
- 52 week high
- R$132.40 on Oct 16, 2025
- 52 week low
- R$50.25 on Jul 30, 2026
- Deepest drawdown
- -62.0% from Oct 16, 2025 to Jul 30, 2026, not yet recovered
- Best single session
- +50.1% on Aug 3, 2022
- Worst single session
- -33.0% on Jul 30, 2026
- Volatility, 1 year annualised
- 56.7%
- Sessions closing higher, 1 year
- 25%
- Best calendar year
- 2024, +63%
- Worst calendar year
- 2023, -29%
A1LN34 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. 2020 starts on Oct 14, 2020; 2026 runs to Sep 25, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | R$111.44 | R$111.44 | R$50.25 | R$63.72 | -42.8% | 225.3K | 184 |
| 2025 | R$72.49 | R$132.40 | R$67.16 | R$111.44 | +53.2% | 37.2K | 250 |
| 2024 | R$47.92 | R$85.44 | R$36.23 | R$72.73 | +62.9% | 36.9K | 251 |
| 2023 | R$63.00 | R$63.96 | R$38.10 | R$44.65 | -29.1% | 3.3K | 248 |
| 2022 | R$47.03 | R$63.06 | R$29.85 | R$63.00 | +34.0% | 112.3K | 250 |
| 2021 | R$34.38 | R$57.84 | R$32.97 | R$47.03 | +47.2% | 119.7K | 247 |
| 2020 | R$40.95 | R$41.68 | R$31.57 | R$31.95 | n/a | 15.3K | 52 |
A1LN34 monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | R$63.72 | +2.7% |
| August 2026 | R$62.03 | +19.4% |
| July 2026 | R$51.95 | -32.2% |
| June 2026 | R$76.67 | -0.6% |
| May 2026 | R$77.12 | -1.9% |
| April 2026 | R$78.59 | -7.1% |
| March 2026 | R$84.64 | -1.1% |
| February 2026 | R$85.59 | -5.0% |
| January 2026 | R$90.06 | -19.2% |
| December 2025 | R$111.44 | -7.6% |
| November 2025 | R$120.60 | 0.0% |
| October 2025 | R$120.60 | -0.5% |
About the A1LN34 data
Daily bars. 1,482 sessions from Oct 14, 2020 to Sep 25, 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 23, 2026 forward, most recent session Sep 23, 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 Oct 14, 2020, 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/A1LN34/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on B3
Common questions
A1LN34 share price history
