JPX · 219A · stock
Heartseed Inc. (219A) stock price history
Every JPX trading session of Heartseed Inc. from Jul 30, 2024 to Sep 29, 2026: 527 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.
219A adjusted close, 2024 to 2026
- ¥4,315
- All time high, 2025
- ¥3,310
- 52 week high, ¥1,343 low
- 527
- Daily sessions since 2024
Last updated Sep 29, 2026, the last stored session. Refreshes after each trading day. Full 2024 to 2026 series and minute bars.
219A key facts
- Heartseed Inc. (219A) closed at ¥2,608 on Sep 29, 2026 on JPX.
- 219A's all time high close is ¥4,315, set on Jun 16, 2025; its all time low close is ¥1,004 on Aug 5, 2024.
- 219A's 52 week range is ¥1,343 to ¥3,310.
- 219A returned -19.8% over the year to Sep 29, 2026.
- Since Jul 30, 2024 219A returned +65%, +26.0% a year compounded.
- 219A's deepest drawdown was -67.6% from Jun 16, 2025 to Oct 2, 2025.
- DataCedar holds 527 daily sessions of 219A history from Jul 30, 2024 and minute bars from Sep 14, 2026, adjusted for splits and dividends, served by the API under a key.
219A price chart, 2024 to 2026
219A returns
Price return from the last close on or before the window start to Sep 29, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +4.3% |
| 3 months | +65.0% |
| 6 months | +45.1% |
| Year to date | +44.6% |
| 1 year | -19.8% |
| 3 years | n/a |
| 5 years | n/a |
| 10 years | n/a |
| Since Jul 30, 2024 | +65.1% |
| Compound annual growth, 2.2 years | +26.0% |
219A records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- ¥4,315 on Jun 16, 2025
- All time low close
- ¥1,004 on Aug 5, 2024
- 52 week high
- ¥3,310 on Sep 29, 2025
- 52 week low
- ¥1,343 on Oct 2, 2025
- Deepest drawdown
- -67.6% from Jun 16, 2025 to Oct 2, 2025, not yet recovered
- Best single session
- +26.2% on Oct 6, 2025
- Worst single session
- -31.9% on Oct 2, 2025
- Volatility, 1 year annualised
- 84.5%
- Sessions closing higher, 1 year
- 45%
- Best calendar year
- 2025, -37%
- Worst calendar year
- 2025, -37%
219A 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. 2024 starts on Jul 30, 2024; 2026 runs to Sep 29, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | ¥1,810 | ¥2,790 | ¥1,365 | ¥2,608 | +44.6% | 61.1M | 179 |
| 2025 | ¥3,000 | ¥4,385 | ¥1,343 | ¥1,804 | -37.1% | 297.3M | 243 |
| 2024 | ¥1,548 | ¥2,999 | ¥901.00 | ¥2,868 | n/a | 92.2M | 105 |
219A monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | ¥2,608 | +5.3% |
| August 2026 | ¥2,477 | +47.2% |
| July 2026 | ¥1,683 | +0.9% |
| June 2026 | ¥1,668 | +8.2% |
| May 2026 | ¥1,542 | -13.2% |
| April 2026 | ¥1,777 | +2.7% |
| March 2026 | ¥1,730 | -14.7% |
| February 2026 | ¥2,028 | +6.6% |
| January 2026 | ¥1,903 | +5.5% |
| December 2025 | ¥1,804 | +4.6% |
| November 2025 | ¥1,724 | -0.5% |
| October 2025 | ¥1,733 | -32.0% |
About the 219A data
Daily bars. 527 sessions from Jul 30, 2024 to Sep 29, 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 Sep 29, 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 Jul 30, 2024, 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/219A/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on JPX
Common questions
219A share price history
