Nasdaq · ARCIU · stock
Archimedes Tech SPAC Partners III Co. (ARCIU) stock price history
Every Nasdaq trading session of Archimedes Tech SPAC Partners III Co. from Jan 23, 2026 to Sep 25, 2026: 170 daily bars, adjusted for splits and dividends, with minute bars from Jul 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.
ARCIU adjusted close, 2026 to 2026
- $10.43
- All time high, 2026
- $10.66
- 52 week high, $9.99 low
- 170
- Daily sessions since 2026
Last updated Sep 25, 2026, the last stored session. Refreshes after each trading day. Full 2026 to 2026 series and minute bars.
ARCIU key facts
- Archimedes Tech SPAC Partners III Co. (ARCIU) closed at $10.24 on Sep 25, 2026 on Nasdaq.
- ARCIU's all time high close is $10.43, set on Sep 3, 2026; its all time low close is $9.99 on Apr 10, 2026.
- ARCIU's 52 week range is $9.99 to $10.66.
- ARCIU's deepest drawdown was -2.0% from Jul 6, 2026 to Jul 15, 2026.
- DataCedar holds 170 daily sessions of ARCIU history from Jan 23, 2026 and minute bars from Jul 15, 2026, adjusted for splits and dividends, served by the API under a key.
ARCIU price chart, 2026 to 2026
ARCIU returns
Price return from the last close on or before the window start to Sep 25, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -1.3% |
| 3 months | +0.9% |
| 6 months | +2.0% |
| Year to date | n/a |
| 1 year | n/a |
| 3 years | n/a |
| 5 years | n/a |
| 10 years | n/a |
| Since Jan 23, 2026 | +1.1% |
ARCIU records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $10.43 on Sep 3, 2026
- All time low close
- $9.99 on Apr 10, 2026
- 52 week high
- $10.66 on Jun 10, 2026
- 52 week low
- $9.99 on Mar 24, 2026
- Deepest drawdown
- -2.0% from Jul 6, 2026 to Jul 15, 2026, recovered Jul 21, 2026
- Best single session
- +2.4% on Jul 21, 2026
- Worst single session
- -1.4% on Jul 7, 2026
- Volatility, 1 year annualised
- 4.6%
- Sessions closing higher, 1 year
- 18%
ARCIU 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. 2026 starts on Jan 23, 2026; 2026 runs to Sep 25, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $10.04 | $10.66 | $9.99 | $10.24 | n/a | 10M | 170 |
ARCIU monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | $10.24 | -1.6% |
| August 2026 | $10.41 | +0.3% |
| July 2026 | $10.38 | +1.9% |
| June 2026 | $10.19 | +0.8% |
| May 2026 | $10.11 | +1.2% |
| April 2026 | $9.99 | -0.1% |
| March 2026 | $10.00 | -0.3% |
| February 2026 | $10.03 | -0.6% |
| January 2026 | $10.10 | n/a |
About the ARCIU data
Daily bars. 170 sessions from Jan 23, 2026 to Sep 25, 2026, one row per Nasdaq 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 Jul 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 Nasdaq trading days; minute timestamps are UTC. Prices are in USD. 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 Jan 23, 2026, 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/ARCIU/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Nasdaq
Common questions
ARCIU share price history
