JPX · 4438 · stock
Welby Inc. (4438) stock price history
Every JPX trading session of Welby Inc. from Apr 1, 2019 to Nov 12, 2026: 1,852 daily bars, adjusted for splits and dividends, with minute bars from Sep 14, 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.
4438 adjusted close, 2019 to 2026
- ¥5,000
- All time high, 2019
- ¥558.00
- 52 week high, ¥231.00 low
- 1,852
- Daily sessions since 2019
Last updated Nov 12, 2026, the last stored session. Refreshes after each trading day. Full 2019 to 2026 series and minute bars.
4438 key facts
- Welby Inc. (4438) closed at ¥270.00 on Nov 12, 2026 on JPX.
- 4438's all time high close is ¥5,000, set on Jun 11, 2019; its all time low close is ¥237.00 on Jul 17, 2026.
- 4438's 52 week range is ¥231.00 to ¥558.00.
- 4438 returned -48.1% over the year to Nov 12, 2026 and -70.0% over five years.
- Since Apr 1, 2019 4438 returned -94%, -30.7% a year compounded.
- 4438's deepest drawdown was -95.3% from Jun 11, 2019 to Jul 17, 2026.
- DataCedar holds 1,852 daily sessions of 4438 history from Apr 1, 2019 and minute bars from Sep 14, 2026, adjusted for splits and dividends, served by the API under a key.
4438 price chart, 2019 to 2026
4438 returns
Price return from the last close on or before the window start to Nov 12, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -7.5% |
| 3 months | +5.5% |
| 6 months | -10.0% |
| Year to date | -3.2% |
| 1 year | -48.1% |
| 3 years | -27.4% |
| 5 years | -70.0% |
| 10 years | n/a |
| Since Apr 1, 2019 | -93.9% |
| Compound annual growth, 7.6 years | -30.7% |
4438 records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- ¥5,000 on Jun 11, 2019
- All time low close
- ¥237.00 on Jul 17, 2026
- 52 week high
- ¥558.00 on Nov 13, 2025
- 52 week low
- ¥231.00 on Jul 17, 2026
- Deepest drawdown
- -95.3% from Jun 11, 2019 to Jul 17, 2026, not yet recovered
- Best single session
- +32.5% on Sep 16, 2026
- Worst single session
- -19.4% on Aug 5, 2024
- Volatility, 1 year annualised
- 84.6%
- Sessions closing higher, 1 year
- 38%
- Best calendar year
- 2023, +83%
- Worst calendar year
- 2024, -49%
4438 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. 2019 starts on Apr 1, 2019; 2026 runs to Nov 12, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | ¥284.00 | ¥495.00 | ¥231.00 | ¥270.00 | -3.2% | 23.6M | 205 |
| 2025 | ¥335.00 | ¥558.00 | ¥264.00 | ¥279.00 | -17.2% | 16.6M | 243 |
| 2024 | ¥657.00 | ¥834.00 | ¥293.00 | ¥337.00 | -49.5% | 6.6M | 245 |
| 2023 | ¥366.00 | ¥818.00 | ¥345.00 | ¥667.00 | +83.2% | 19.1M | 246 |
| 2022 | ¥702.00 | ¥720.00 | ¥347.00 | ¥364.00 | -48.2% | 2.5M | 243 |
| 2021 | ¥1,228 | ¥1,716 | ¥662.00 | ¥703.00 | -41.7% | 6.3M | 245 |
| 2020 | ¥2,200 | ¥2,670 | ¥814.00 | ¥1,205 | -45.4% | 11.3M | 242 |
| 2019 | ¥4,508 | ¥5,000 | ¥1,898 | ¥2,207 | n/a | 7.9M | 183 |
4438 monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| November 2026 | ¥270.00 | -2.2% |
| October 2026 | ¥276.00 | -0.4% |
| September 2026 | ¥277.00 | +9.1% |
| August 2026 | ¥254.00 | +4.5% |
| July 2026 | ¥243.00 | +0.8% |
| June 2026 | ¥241.00 | -11.7% |
| May 2026 | ¥273.00 | -11.1% |
| April 2026 | ¥307.00 | -4.4% |
| March 2026 | ¥321.00 | -12.1% |
| February 2026 | ¥365.00 | +25.9% |
| January 2026 | ¥290.00 | +3.9% |
| December 2025 | ¥279.00 | -5.7% |
About the 4438 data
Daily bars. 1,852 sessions from Apr 1, 2019 to Nov 12, 2026, one row per JPX 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 14, 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 JPX trading days; minute timestamps are UTC. Prices are in JPY. 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 Apr 1, 2019, 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/jpx%3A4438/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on JPX
Common questions
4438 share price history
