JPX · 6557 · stock
AIAI Group Corporation (6557) stock price history
Every JPX trading session of AIAI Group Corporation from Oct 31, 2017 to Sep 28, 2026: 2,189 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.
6557 adjusted close, 2017 to 2026
- ¥2,160
- All time high, 2019
- ¥1,485
- 52 week high, ¥580.00 low
- 2,189
- Daily sessions since 2017
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2017 to 2026 series and minute bars.
6557 key facts
- AIAI Group Corporation (6557) closed at ¥668.00 on Sep 28, 2026 on JPX.
- 6557's all time high close is ¥2,160, set on Dec 27, 2019; its all time low close is ¥259.00 on Oct 31, 2017.
- 6557's 52 week range is ¥580.00 to ¥1,485.
- 6557 returned -57.6% over the year to Sep 28, 2026 and +52.5% over five years.
- Since Oct 31, 2017 6557 returned +158%, +11.2% a year compounded.
- 6557's deepest drawdown was -87.0% from Dec 27, 2019 to Dec 28, 2022.
- DataCedar holds 2,189 daily sessions of 6557 history from Oct 31, 2017 and minute bars from Sep 14, 2026, adjusted for splits and dividends, served by the API under a key.
6557 price chart, 2017 to 2026
6557 returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -14.9% |
| 3 months | +11.9% |
| 6 months | -43.3% |
| Year to date | -53.5% |
| 1 year | -57.6% |
| 3 years | +61.5% |
| 5 years | +52.5% |
| 10 years | n/a |
| Since Oct 31, 2017 | +157.9% |
| Compound annual growth, 8.9 years | +11.2% |
6557 records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- ¥2,160 on Dec 27, 2019
- All time low close
- ¥259.00 on Oct 31, 2017
- 52 week high
- ¥1,485 on Nov 28, 2025
- 52 week low
- ¥580.00 on Jun 11, 2026
- Deepest drawdown
- -87.0% from Dec 27, 2019 to Dec 28, 2022, not yet recovered
- Best single session
- +606.6% on Dec 23, 2019
- Worst single session
- -22.2% on May 8, 2026
- Volatility, 1 year annualised
- 40.0%
- Sessions closing higher, 1 year
- 40%
- Growth of 1 since 2017
- 2.6×
- Best calendar year
- 2019, +709%
- Worst calendar year
- 2020, -76%
6557 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. 2017 starts on Oct 31, 2017; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | ¥1,434 | ¥1,481 | ¥580.00 | ¥668.00 | -53.5% | 6.6M | 178 |
| 2025 | ¥1,623 | ¥1,645 | ¥1,095 | ¥1,438 | -10.8% | 5.3M | 243 |
| 2024 | ¥489.00 | ¥1,870 | ¥477.50 | ¥1,613 | +234.0% | 20.8M | 245 |
| 2023 | ¥291.00 | ¥691.50 | ¥283.00 | ¥483.00 | +66.8% | 83M | 246 |
| 2022 | ¥370.50 | ¥380.50 | ¥278.50 | ¥289.50 | -20.4% | 1.4M | 244 |
| 2021 | ¥507.00 | ¥655.00 | ¥339.50 | ¥363.50 | -28.7% | 4.4M | 245 |
| 2020 | ¥2,135 | ¥2,145 | ¥435.00 | ¥510.00 | -75.7% | 18M | 242 |
| 2019 | ¥259.00 | ¥2,373 | ¥259.00 | ¥2,095 | +708.9% | 7.5M | 241 |
| 2018 | ¥259.00 | ¥259.00 | ¥259.00 | ¥259.00 | 0.0% | 0 | 261 |
| 2017 | ¥259.00 | ¥259.00 | ¥259.00 | ¥259.00 | n/a | 0 | 44 |
6557 monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | ¥668.00 | -14.6% |
| August 2026 | ¥782.00 | +7.7% |
| July 2026 | ¥726.00 | +17.5% |
| June 2026 | ¥618.00 | -4.5% |
| May 2026 | ¥647.00 | -44.2% |
| April 2026 | ¥1,160 | +1.7% |
| March 2026 | ¥1,141 | -13.6% |
| February 2026 | ¥1,321 | -3.9% |
| January 2026 | ¥1,374 | -4.5% |
| December 2025 | ¥1,438 | -3.2% |
| November 2025 | ¥1,485 | +6.8% |
| October 2025 | ¥1,390 | -2.7% |
About the 6557 data
Daily bars. 2,189 sessions from Oct 31, 2017 to Sep 28, 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 Oct 31, 2017, 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/6557/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on JPX
Common questions
6557 share price history
