289.32 USD
↗ 14.56 (5.75%)PRE MARKET (AS OF 05:29 AM EDT)
ONTO Stock Premarket
Onto Innovation Inc.
ONTONYSE • USD
Market: CLOSED
Premarket trading runs 4:00 AM – 9:30 AM ET.
ONTO Premarket Chart
ONTO Premarket News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, ONTO has had 26 qualifying gap events (gaps of 5% or more at the open) — 16 gap-ups and 10 gap-downs. Gap-ups averaged +7%, 81% have fully filled, median time to fill 17 trading days. Gap-downs averaged -8.3%, 50% have fully filled, median time to fill 4 trading days. Most recent: a -5.7% gap down on May 6, 2026, still unfilled. ONTO has 1 unfilled gap from the past 60 days — a -5.7% gap down on May 6, 2026, currently 96% retraced. Average 20-trading-day return after a ONTO gap up: +0.14%. After a gap down: -3.71%.
Gap Ups16 events
Fill Rate
81.3%
Avg Gap
7.0%
Avg 50% Fill
6d
Avg Fill
17d
Gap Downs10 events
Fill Rate
50.0%
Avg Gap
8.3%
Avg 50% Fill
2d
Avg Fill
4d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 69% | 81% | 81% | 94% |
| fills 50% | 19% | 56% | 69% | 81% |
| fills 75% | 6% | 31% | 38% | 81% |
| fills 100% | 0% | 19% | 25% | 63% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 50% | 70% | 80% | 80% |
| fills 50% | 40% | 70% | 70% | 80% |
| fills 75% | 30% | 60% | 60% | 60% |
| fills 100% | 20% | 40% | 40% | 40% |
Active Unfilled Gaps (past 60 days)
33 days ago
2026-05-06
Gap %
-5.74%
Gap From
$305.00
% vs Current
+20.44%
retraced 96% to $304.35
Complete Gap History — 26 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 2026-05-06 | $305.00 | -5.74% | Open | 1d | — | 96% | 96% | 96% | 96% |
| 2026-04-28 | $298.28 | -6.30% | Filled | 3d | 4d | 47% | 100% | 100% | 100% |
| 2026-04-17 | $267.15 | +6.06% | Filled | 8d | 18d | 28% | 28% | 52% | 100% |
| 2026-04-16 | $258.90 | +11.24% | Filled | 1d | 23d | 78% | 78% | 78% | 78% |
| 2026-04-08 | $219.11 | +8.23% | Open | — | — | 40% | 40% | 40% | 40% |
| 2026-01-15 | $202.21 | +8.45% | Filled | 6d | 7d | 21% | 85% | 100% | 100% |
| 2025-11-07 | $131.75 | -9.70% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-10-13 | $121.34 | +5.91% | Filled | 2d | 20d | 21% | 56% | 95% | 100% |
| 2025-09-23 | $130.12 | +5.74% | Filled | 2d | 3d | 31% | 100% | 100% | 100% |
| 2025-09-18 | $116.00 | +5.93% | Open | 37d | — | 33% | 33% | 33% | 33% |
| 2025-05-12 | $88.50 | +6.16% | Open | 1d | — | 51% | 51% | 55% | 78% |
| 2025-05-09 | $126.81 | -21.22% | Open | — | — | 1% | 16% | 16% | 16% |
| 2025-04-23 | $114.21 | +7.16% | Filled | 6d | 13d | 39% | 72% | 72% | 100% |
| 2025-04-10 | $133.37 | -7.18% | Open | 16d | — | 20% | 20% | 36% | 67% |
| 2025-04-03 | $125.43 | -5.92% | Filled | 5d | 5d | 21% | 100% | 100% | 100% |
| 2025-02-07 | $210.59 | -6.10% | Open | — | — | 9% | 9% | 9% | 9% |
| 2025-01-27 | $213.59 | -7.77% | Open | 4d | — | 4% | 92% | 94% | 94% |
| 2024-11-01 | $198.33 | -5.45% | Filled | 1d | 49d | 51% | 51% | 51% | 51% |
| 2024-09-26 | $203.51 | +9.36% | Filled | 2d | 4d | 46% | 100% | 100% | 100% |
| 2024-09-19 | $187.77 | +5.06% | Filled | 32d | 32d | 25% | 25% | 25% | 25% |
| 2024-08-09 | $177.81 | +6.86% | Filled | 18d | 20d | 0% | 19% | 19% | 100% |
| 2024-08-05 | $158.45 | -7.86% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2024-07-31 | $177.89 | +6.00% | Filled | 2d | 2d | 48% | 100% | 100% | 100% |
| 2024-05-10 | $208.42 | +8.99% | Filled | 1d | 17d | 64% | 64% | 64% | 100% |
| 2022-11-10 | $74.58 | +5.39% | Filled | 12d | 25d | 21% | 21% | 21% | 96% |
| 2022-08-10 | $74.81 | +5.25% | Filled | 9d | 14d | 35% | 38% | 67% | 100% |
Frequently Asked Questions
What is ONTO's premarket price?
Onto Innovation (ONTO) is trading at $289.32 in premarket, up $14.56 (+5.75%) from the previous close of $274.76.
When does ONTO premarket trading start?
Premarket trading for ONTO on the NYSE runs from 4:00 AM to 9:30 AM Eastern Time, ahead of the regular session (9:30 AM – 4:00 PM ET). After-hours runs from 4:00 PM to 8:00 PM ET.
How often does ONTO fill its gaps?
Over the past 5 years, 81% of ONTO gap-ups have fully filled and 50% of gap-downs have filled. Median time to fill is 17 trading days for gap-ups and 4 trading days for gap-downs.
Does ONTO have any unfilled gaps?
Yes. ONTO has 1 unfilled gap from the past 60 days. The largest is a -5.7% gap down from May 6, 2026 and is currently 96% retraced.
What's the average return after a ONTO gap?
Based on 26 qualifying gap events over the past 5 years, the average 20-trading-day return after a ONTO gap up is +0.14%, and after a gap down is -3.71%.