Borsa Istanbul · ONCSM · stock
Oncosem Onkolojik Sistemler Sanayi Ve Ticaret Anonim Sirketi (ONCSM) stock price history
Every Borsa Istanbul trading session of Oncosem Onkolojik Sistemler Sanayi Ve Ticaret Anonim Sirketi from Jan 4, 2023 to Sep 28, 2026: 934 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.
ONCSM adjusted close, 2023 to 2026
- TRY 380.00
- All time high, 2026
- TRY 389.75
- 52 week high, TRY 79.50 low
- 934
- Daily sessions since 2023
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2023 to 2026 series and minute bars.
ONCSM key facts
- Oncosem Onkolojik Sistemler Sanayi Ve Ticaret Anonim Sirketi (ONCSM) closed at TRY 83.65 on Sep 28, 2026 on Borsa Istanbul.
- ONCSM's all time high close is TRY 380.00, set on May 20, 2026; its all time low close is TRY 19.20 on Jan 4, 2023.
- ONCSM's 52 week range is TRY 79.50 to TRY 389.75.
- ONCSM returned -28.4% over the year to Sep 28, 2026.
- Since Jan 4, 2023 ONCSM returned +336%, +48.3% a year compounded.
- ONCSM's deepest drawdown was -78.7% from May 20, 2026 to Sep 24, 2026.
- DataCedar holds 934 daily sessions of ONCSM history from Jan 4, 2023 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
ONCSM price chart, 2023 to 2026
ONCSM returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -66.2% |
| 3 months | -66.8% |
| 6 months | -66.7% |
| Year to date | -67.8% |
| 1 year | -28.4% |
| 3 years | -57.3% |
| 5 years | n/a |
| 10 years | n/a |
| Since Jan 4, 2023 | +335.6% |
| Compound annual growth, 3.7 years | +48.3% |
ONCSM records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- TRY 380.00 on May 20, 2026
- All time low close
- TRY 19.20 on Jan 4, 2023
- 52 week high
- TRY 389.75 on May 21, 2026
- 52 week low
- TRY 79.50 on Sep 24, 2026
- Deepest drawdown
- -78.7% from May 20, 2026 to Sep 24, 2026, not yet recovered
- Best single session
- +10.0% on Jan 26, 2023
- Worst single session
- -10.0% on Sep 11, 2023
- Volatility, 1 year annualised
- 69.8%
- Sessions closing higher, 1 year
- 44%
- Growth of 1 since 2023
- 4.4×
- Best calendar year
- 2025, +148%
- Worst calendar year
- 2024, -29%
ONCSM 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. 2023 starts on Jan 4, 2023; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | TRY 266.00 | TRY 389.75 | TRY 79.50 | TRY 83.65 | -68.2% | 136.5M | 187 |
| 2025 | TRY 106.10 | TRY 301.00 | TRY 76.00 | TRY 263.00 | +147.9% | 211.6M | 251 |
| 2024 | TRY 151.00 | TRY 268.00 | TRY 90.60 | TRY 106.10 | -29.1% | 228.3M | 249 |
| 2023 | TRY 19.20 | TRY 288.08 | TRY 19.20 | TRY 149.60 | n/a | 226.1M | 247 |
ONCSM monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | TRY 83.65 | -62.7% |
| August 2026 | TRY 224.00 | -11.4% |
| July 2026 | TRY 252.75 | +1.1% |
| June 2026 | TRY 250.00 | -15.0% |
| May 2026 | TRY 294.25 | +7.6% |
| April 2026 | TRY 273.50 | +8.3% |
| March 2026 | TRY 252.50 | -8.6% |
| February 2026 | TRY 276.25 | -9.3% |
| January 2026 | TRY 304.50 | +15.8% |
| December 2025 | TRY 263.00 | +15.9% |
| November 2025 | TRY 227.00 | +5.1% |
| October 2025 | TRY 215.90 | +93.5% |
About the ONCSM data
Daily bars. 934 sessions from Jan 4, 2023 to Sep 28, 2026, one row per Borsa Istanbul 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 Borsa Istanbul trading days; minute timestamps are UTC. Prices are in TRY. 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 Jan 4, 2023, 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/ONCSM/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Borsa Istanbul
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Common questions
ONCSM share price history
