NASDAQ
On the weekly chart, ALGN broke out below its sideways range between $172.05 and $413.20 (started 30 Oct 2022), its pullback failed, and NasdaqScan detected a retest of the low in the week of 10 Aug 2025, 1015 days after the range began.
Since 2019, NasdaqScan has found 3 sideways ranges in ALGN. Completed ranges lasted 592 days on average, from 476 to 707 days. Of those 2, 1 broke upward and 1 broke downward.
The pattern: price breaks out below a long sideways range, the pullback back into the range fails, and price comes back to retest the low. Traders also call this a spring. NasdaqScan flags the weekly candle that makes the retest.
Weekly chart: each candle is one week of trading, and every date on this page is the week it falls in.
Gold dashed bands mark earlier sideways ranges, from their first swing to where they broke. Pick a range in the table below to zoom the chart to it.
| Range | Started | Ended | How it ended | Retest signals (week of) |
|---|---|---|---|---|
| 30 Oct 2022 | Open | — | 10 Aug 2025 (Go ahead) | |
| 9 May 2021 | 28 Aug 2022 (476 days) | Broke below the range at $234.01 | — | |
| 25 Aug 2019 | 1 Aug 2021 (707 days) | Broke above the range at $714.15 | — |
All NASDAQ stocks with retest patterns →
Past patterns don't predict future price moves. This page shows what an automated algorithm detected and is not financial advice. Read the disclaimer.