TWSE · 4155 · stock

OK Biotech Co., Ltd. (4155) stock price history

Every TWSE trading session of OK Biotech Co., Ltd. from Jun 20, 2012 to Sep 24, 2026: 3,483 daily bars, adjusted for splits and dividends, with minute bars from Sep 15, 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.

Get 4155 data, free keyYear by year table

4155 adjusted close, 2012 to 2026

4155OK Biotech Co., Ltd.
NT$14.85-0.7% over one year
2014201620182020202220242026
NT$36.43
All time high, 2023
NT$16.50
52 week high, NT$12.85 low
3,483
Daily sessions since 2012

Last updated Sep 24, 2026, the last stored session. Refreshes after each trading day. Full 2012 to 2026 series and minute bars.

4155 key facts

  • OK Biotech Co., Ltd. (4155) closed at NT$14.85 on Sep 24, 2026 on TWSE.
  • 4155's all time high close is NT$36.43, set on Jul 4, 2023; its all time low close is NT$9.14 on Sep 3, 2012.
  • 4155's 52 week range is NT$12.85 to NT$16.50.
  • 4155 returned -0.7% over the year to Sep 24, 2026 and -18.1% over five years.
  • Over ten years 4155 returned -9%, -0.9% a year compounded.
  • 4155's deepest drawdown was -66.4% from Jul 30, 2013 to Oct 15, 2014.
  • DataCedar holds 3,483 daily sessions of 4155 history from Jun 20, 2012 and minute bars from Sep 15, 2026, adjusted for splits and dividends, served by the API under a key.

4155 price chart, 2012 to 2026

4155 adjusted close, Jun 20, 2012 to Sep 24, 2026NT$9.56NT$16.55NT$23.54NT$30.5320122014201620182020202220242026
Adjusted daily close. 260 sampled points across the full history; the API serves every session.

4155 returns

Price return from the last close on or before the window start to Sep 24, 2026, on adjusted closes.

PeriodReturn
1 month+2.8%
3 months-1.0%
6 months+10.8%
Year to date+2.1%
1 year-0.7%
3 years-45.6%
5 years-18.1%
10 years-8.5%
Since Jun 20, 2012+28.4%
Compound annual growth, 14.3 years+1.8%

4155 records

Measured on the stored closes; every figure is reproducible from the API series.

All time high close
NT$36.43 on Jul 4, 2023
All time low close
NT$9.14 on Sep 3, 2012
52 week high
NT$16.50 on Jul 16, 2026
52 week low
NT$12.85 on Apr 27, 2026
Deepest drawdown
-66.4% from Jul 30, 2013 to Oct 15, 2014, recovered Jun 29, 2023
Best single session
+17.2% on Nov 28, 2014
Worst single session
-16.4% on Jul 17, 2012
Volatility, 1 year annualised
23.5%
Sessions closing higher, 1 year
37%
Best calendar year
2013, +94%
Worst calendar year
2014, -29%

4155 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. 2012 starts on Jun 20, 2012; 2026 runs to Sep 24, 2026.

YearOpenHighLowCloseReturnVolumeSessions
2026NT$14.45NT$16.50NT$12.85NT$14.85+2.4%53.9M178
2025NT$20.09NT$21.90NT$13.65NT$14.50-27.8%41.3M242
2024NT$24.35NT$27.36NT$19.99NT$20.09-17.5%118M242
2023NT$22.70NT$37.58NT$21.92NT$24.35+7.2%475.6M239
2022NT$18.42NT$24.27NT$17.51NT$22.70+23.3%216.6M246
2021NT$20.15NT$20.75NT$16.94NT$18.42-8.5%63M243
2020NT$23.46NT$25.93NT$15.64NT$20.12-13.5%233M245
2019NT$15.77NT$28.71NT$15.67NT$23.25+46.0%174.6M241
2018NT$18.53NT$20.95NT$14.62NT$15.93-13.8%35.1M245
2017NT$16.84NT$24.17NT$16.56NT$18.47+9.3%60.5M243
2016NT$17.52NT$19.88NT$13.99NT$16.90-10.9%28.3M244
2015NT$17.39NT$21.47NT$11.17NT$18.97+9.1%29.5M246
2014NT$23.51NT$27.38NT$11.23NT$17.39-29.4%43.4M248
2013NT$12.85NT$36.42NT$12.71NT$24.63+93.8%31.6M244
2012NT$11.56NT$13.18NT$8.99NT$12.71n/a0137

4155 monthly closes, last 12 months

MonthMonth end closeChange
September 2026NT$14.85+2.1%
August 2026NT$14.55+1.0%
July 2026NT$14.40-4.3%
June 2026NT$15.05+1.7%
May 2026NT$14.80+13.8%
April 2026NT$13.00-0.8%
March 2026NT$13.10-9.3%
February 2026NT$14.45-1.0%
January 2026NT$14.60+0.7%
December 2025NT$14.50-4.0%
November 2025NT$15.10+7.1%
October 2025NT$14.10-5.1%

About the 4155 data

Daily bars. 3,483 sessions from Jun 20, 2012 to Sep 24, 2026, one row per TWSE 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 15, 2026 forward, most recent session Sep 24, 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 TWSE trading days; minute timestamps are UTC. Prices are in TWD. 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 Jun 20, 2012, 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/4155/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

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