TWSE · 6541 · stock

Tanvex BioPharma, Inc. (6541) stock price history

Every TWSE trading session of Tanvex BioPharma, Inc. from Aug 13, 2015 to Sep 24, 2026: 2,706 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 6541 data, free keyYear by year table

6541 adjusted close, 2015 to 2026

6541Tanvex BioPharma, Inc.
NT$30.30-38.0% over one year
201620182020202220242026
NT$845.39
All time high, 2015
NT$68.00
52 week high, NT$30.30 low
2,706
Daily sessions since 2015

Last updated Sep 24, 2026, the last stored session. Refreshes after each trading day. Full 2015 to 2026 series and minute bars.

6541 key facts

  • Tanvex BioPharma, Inc. (6541) closed at NT$30.30 on Sep 24, 2026 on TWSE.
  • 6541's all time high close is NT$845.39, set on Dec 10, 2015; its all time low close is NT$30.30 on Sep 15, 2026.
  • 6541's 52 week range is NT$30.30 to NT$68.00.
  • 6541 returned -38.0% over the year to Sep 24, 2026 and -77.2% over five years.
  • Over ten years 6541 returned -93%, -23.6% a year compounded.
  • 6541's deepest drawdown was -96.4% from Dec 10, 2015 to Sep 15, 2026.
  • DataCedar holds 2,706 daily sessions of 6541 history from Aug 13, 2015 and minute bars from Sep 15, 2026, adjusted for splits and dividends, served by the API under a key.

6541 price chart, 2015 to 2026

6541 adjusted close, Aug 13, 2015 to Sep 24, 2026NT$30.30NT$89.63NT$265.12NT$784.24201620182020202220242026
Adjusted daily close, log scale. 260 sampled points across the full history; the API serves every session.

6541 returns

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

PeriodReturn
1 month-16.6%
3 months-33.0%
6 months-27.2%
Year to date-46.3%
1 year-38.0%
3 years-51.4%
5 years-77.2%
10 years-93.2%
Since Aug 13, 2015-91.2%
Compound annual growth, 11.1 years-19.6%

6541 records

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

All time high close
NT$845.39 on Dec 10, 2015
All time low close
NT$30.30 on Sep 15, 2026
52 week high
NT$68.00 on Oct 14, 2025
52 week low
NT$30.30 on Sep 15, 2026
Deepest drawdown
-96.4% from Dec 10, 2015 to Sep 15, 2026, not yet recovered
Best single session
+23.1% on Dec 9, 2015
Worst single session
-15.8% on Aug 2, 2017
Volatility, 1 year annualised
41.3%
Sessions closing higher, 1 year
44%
Best calendar year
2021, +57%
Worst calendar year
2017, -51%

6541 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. 2015 starts on Aug 13, 2015; 2026 runs to Sep 24, 2026.

YearOpenHighLowCloseReturnVolumeSessions
2026NT$55.40NT$56.80NT$30.30NT$30.30-44.9%85.7M178
2025NT$65.30NT$82.00NT$48.10NT$55.00-15.6%153.3M242
2024NT$65.50NT$80.00NT$35.05NT$65.20+0.2%69.3M242
2023NT$103.86NT$148.37NT$57.80NT$65.10-36.9%93.4M239
2022NT$171.88NT$215.36NT$79.33NT$103.13-39.6%121.3M246
2021NT$109.30NT$291.09NT$99.55NT$170.70+56.8%94.9M243
2020NT$126.91NT$172.83NT$69.87NT$108.87-14.7%47.7M245
2019NT$178.21NT$237.71NT$105.09NT$127.62-27.9%28.2M241
2018NT$210.86NT$372.02NT$150.16NT$177.08-16.7%41.2M245
2017NT$415.54NT$422.56NT$206.36NT$212.54-51.1%17.6M243
2016NT$560.93NT$648.57NT$342.59NT$434.91-32.1%8.1M243
2015NT$342.94NT$917.14NT$228.63NT$640.69n/a2.7M99

6541 monthly closes, last 12 months

MonthMonth end closeChange
September 2026NT$30.30-10.9%
August 2026NT$34.00-8.8%
July 2026NT$37.30-7.0%
June 2026NT$40.10+2.8%
May 2026NT$39.00-1.5%
April 2026NT$39.60-0.8%
March 2026NT$39.90-18.5%
February 2026NT$48.95-6.4%
January 2026NT$52.30-4.9%
December 2025NT$55.00+0.9%
November 2025NT$54.50-2.9%
October 2025NT$56.10+8.5%

About the 6541 data

Daily bars. 2,706 sessions from Aug 13, 2015 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 Aug 13, 2015, 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/6541/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

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