Borsa Italiana · 1AAOI · stock
Applied Optoelectronics, Inc. (1AAOI) stock price history
Every Borsa Italiana trading session of Applied Optoelectronics, Inc. from Oct 1, 2025 to Sep 28, 2026: 251 daily bars, adjusted for splits and dividends, with minute bars from Sep 17, 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.
1AAOI adjusted close, 2025 to 2026
- €176.08
- All time high, 2026
- €196.62
- 52 week high, €18.70 low
- 251
- Daily sessions since 2025
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2025 to 2026 series and minute bars.
1AAOI key facts
- Applied Optoelectronics, Inc. (1AAOI) closed at €83.55 on Sep 28, 2026 on Borsa Italiana.
- 1AAOI's all time high close is €176.08, set on May 13, 2026; its all time low close is €18.70 on Nov 24, 2025.
- 1AAOI's 52 week range is €18.70 to €196.62.
- 1AAOI's deepest drawdown was -59.6% from May 13, 2026 to Jul 29, 2026.
- DataCedar holds 251 daily sessions of 1AAOI history from Oct 1, 2025 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
1AAOI price chart, 2025 to 2026
1AAOI returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -10.8% |
| 3 months | -27.6% |
| 6 months | -0.5% |
| Year to date | +167.8% |
| 1 year | n/a |
| 3 years | n/a |
| 5 years | n/a |
| 10 years | n/a |
| Since Oct 1, 2025 | +273.0% |
1AAOI records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- €176.08 on May 13, 2026
- All time low close
- €18.70 on Nov 24, 2025
- 52 week high
- €196.62 on May 14, 2026
- 52 week low
- €18.70 on Nov 24, 2025
- Deepest drawdown
- -59.6% from May 13, 2026 to Jul 29, 2026, not yet recovered
- Best single session
- +41.8% on Feb 27, 2026
- Worst single session
- -33.5% on Nov 11, 2025
- Volatility, 1 year annualised
- 127.5%
- Sessions closing higher, 1 year
- 32%
- Growth of 1 since 2025
- 3.7×
1AAOI 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. 2025 starts on Oct 1, 2025; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | €30.60 | €196.62 | €30.40 | €83.55 | +167.8% | 336.8K | 189 |
| 2025 | €22.60 | €31.60 | €18.70 | €31.20 | n/a | 1.9K | 62 |
1AAOI monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | €83.55 | -9.4% |
| August 2026 | €92.26 | +12.9% |
| July 2026 | €81.70 | -36.9% |
| June 2026 | €129.38 | -2.9% |
| May 2026 | €133.22 | +0.7% |
| April 2026 | €132.28 | +86.3% |
| March 2026 | €71.00 | +8.4% |
| February 2026 | €65.50 | +104.7% |
| January 2026 | €32.00 | +2.6% |
| December 2025 | €31.20 | +50.0% |
| November 2025 | €20.80 | -34.2% |
| October 2025 | €31.60 | n/a |
About the 1AAOI data
Daily bars. 251 sessions from Oct 1, 2025 to Sep 28, 2026, one row per Borsa Italiana 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 17, 2026 forward, most recent session Sep 28, 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 Borsa Italiana trading days; minute timestamps are UTC. Prices are in EUR. 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 1, 2025, 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/1AAOI/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Borsa Italiana
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Common questions
1AAOI share price history
