Nasdaq · CNSY · stock
Cerenome, INC. (CNSY) stock price history
Every Nasdaq trading session of Cerenome, INC. from Jul 11, 2001 to Nov 12, 2026: 6,375 daily bars, adjusted for splits and dividends, with minute bars from Aug 3, 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.
CNSY adjusted close, 2001 to 2026
- $27,000,000
- All time high, 2005
- $19.00
- 52 week high, $0.4300 low
- 6,375
- Daily sessions since 2001
Last updated Nov 12, 2026, the last stored session. Refreshes after each trading day. Full 2001 to 2026 series and minute bars.
CNSY key facts
- Cerenome, INC. (CNSY) closed at $0.7705 on Nov 12, 2026 on Nasdaq.
- CNSY's all time high close is $27,000,000, set on Nov 15, 2005; its all time low close is $0.5700 on Nov 9, 2026.
- CNSY's 52 week range is $0.4300 to $19.00.
- CNSY returned -94.5% over the year to Nov 12, 2026 and -99.9% over five years.
- Over ten years CNSY returned -100%, -72.5% a year compounded.
- CNSY's deepest drawdown was -100.0% from Nov 15, 2005 to Nov 9, 2026.
- DataCedar holds 6,375 daily sessions of CNSY history from Jul 11, 2001 and minute bars from Aug 3, 2026, adjusted for splits and dividends, served by the API under a key.
CNSY price chart, 2001 to 2026
CNSY returns
Price return from the last close on or before the window start to Nov 12, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -57.4% |
| 3 months | -79.2% |
| 6 months | -86.8% |
| Year to date | -94.3% |
| 1 year | -94.5% |
| 3 years | -97.8% |
| 5 years | -99.9% |
| 10 years | -100.0% |
| Since Jul 11, 2001 | -100.0% |
| Compound annual growth, 25.3 years | -48.6% |
CNSY records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $27,000,000 on Nov 15, 2005
- All time low close
- $0.5700 on Nov 9, 2026
- 52 week high
- $19.00 on Dec 12, 2025
- 52 week low
- $0.4300 on Nov 10, 2026
- Deepest drawdown
- -100.0% from Nov 15, 2005 to Nov 9, 2026, not yet recovered
- Best single session
- +311.4% on Mar 6, 2025
- Worst single session
- -56.8% on Jul 24, 2017
- Volatility, 1 year annualised
- 119.6%
- Sessions closing higher, 1 year
- 38%
- Best calendar year
- 2005, +202%
- Worst calendar year
- 2018, -90%
CNSY 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. 2001 starts on Jul 11, 2001; 2026 runs to Nov 12, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $13.00 | $15.25 | $0.4300 | $0.7705 | -94.0% | 89.3M | 219 |
| 2025 | $28.50 | $57.75 | $4.00 | $12.75 | -55.7% | 177.3M | 250 |
| 2024 | $44.75 | $66.75 | $23.25 | $28.75 | -34.3% | 642.1K | 252 |
| 2023 | $123.75 | $180.00 | $24.25 | $43.75 | -63.5% | 2M | 250 |
| 2022 | $390.00 | $810.00 | $108.75 | $120.00 | -69.5% | 1.4M | 251 |
| 2021 | $765.00 | $2,033 | $371.25 | $393.75 | -48.0% | 628.8K | 252 |
| 2020 | $900.00 | $1,335 | $348.75 | $757.50 | -15.8% | 324.5K | 253 |
| 2019 | $5,625 | $9,188 | $667.50 | $900.00 | -83.4% | 187.1K | 252 |
| 2018 | $56,250 | $101,250 | $4,688 | $5,438 | -90.3% | 4.8K | 251 |
| 2017 | $290,625 | $399,375 | $41,250 | $56,250 | -80.1% | 1K | 251 |
| 2016 | $534,375 | $1,012,500 | $255,000 | $283,125 | -47.0% | 205 | 252 |
| 2015 | $1,406,250 | $4,134,375 | $450,000 | $534,375 | -61.2% | 216 | 252 |
| 2014 | $7,171,875 | $9,759,375 | $1,012,500 | $1,378,125 | -80.9% | 32 | 252 |
| 2013 | $8,128,125 | $11,053,125 | $5,625,000 | $7,228,125 | -8.2% | 11 | 252 |
| 2012 | $6,750,000 | $13,865,625 | $5,653,125 | $7,875,000 | +27.3% | 6 | 250 |
| 2011 | $14,850,000 | $23,737,500 | $5,343,750 | $6,187,500 | -57.6% | 2 | 252 |
| 2010 | $17,240,624 | $26,718,750 | $8,859,375 | $14,596,875 | -14.9% | 20 | 252 |
| 2009 | $10,378,125 | $18,703,124 | $3,993,750 | $17,156,250 | +69.0% | 8 | 252 |
| 2008 | $17,184,376 | $24,075,000 | $4,950,000 | $10,153,125 | -40.3% | 1 | 253 |
| 2007 | $19,209,376 | $19,687,500 | $12,825,000 | $17,015,624 | -7.5% | 0 | 251 |
| 2006 | $23,343,750 | $25,875,000 | $10,884,375 | $18,393,750 | -21.2% | 0 | 251 |
| 2005 | $6,693,750 | $28,153,124 | $6,468,750 | $23,343,750 | +201.8% | 0 | 252 |
| 2004 | $8,578,125 | $12,656,250 | $6,890,625 | $7,734,375 | -9.8% | 0 | 252 |
| 2003 | $11,250,000 | $12,571,875 | $8,156,250 | $8,578,125 | -23.8% | 0 | 252 |
| 2002 | $9,450,000 | $14,062,500 | $7,734,375 | $11,250,000 | +25.0% | 0 | 252 |
| 2001 | $16,593,750 | $17,915,624 | $7,593,750 | $9,000,000 | n/a | 0 | 117 |
CNSY monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| November 2026 | $0.7705 | -54.7% |
| October 2026 | $1.70 | -9.1% |
| September 2026 | $1.87 | -33.7% |
| August 2026 | $2.82 | -27.1% |
| July 2026 | $3.87 | -11.4% |
| June 2026 | $4.37 | -24.9% |
| May 2026 | $5.82 | -5.2% |
| April 2026 | $6.14 | +53.5% |
| March 2026 | $4.00 | -46.7% |
| February 2026 | $7.50 | +30.4% |
| January 2026 | $5.75 | -54.9% |
| December 2025 | $12.75 | -16.4% |
About the CNSY data
Daily bars. 6,375 sessions from Jul 11, 2001 to Nov 12, 2026, one row per Nasdaq 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 Aug 3, 2026 forward, most recent session Oct 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 Nasdaq trading days; minute timestamps are UTC. Prices are in USD. 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 Jul 11, 2001, 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/nasdaq%3ACNSY/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Nasdaq
Common questions
CNSY share price history
