390.36 USD
↘ 16.50 (4.06%)PRE MARKET (AS OF 05:29 AM EDT)
TER Stock Premarket
Teradyne, Inc. Common Stock
TERNASDAQ • USD
Market: OPEN
Premarket trading runs 4:00 AM – 9:30 AM ET.
TER Premarket Chart
TER Premarket News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, TER has had 25 qualifying gap events (gaps of 5% or more at the open) — 11 gap-ups and 14 gap-downs. Gap-ups averaged +8.2%, 36% have fully filled, median time to fill 13 trading days. Gap-downs averaged -9.6%, 71% have fully filled, median time to fill 7.5 trading days. Most recent: a +6.8% gap up on Apr 30, 2026, still unfilled. TER has 1 unfilled gap from the past 60 days — a +6.8% gap up on Apr 30, 2026, currently 85% retraced. Average 20-trading-day return after a TER gap up: +12.95%. After a gap down: +3.29%.
Gap Ups11 events
Fill Rate
36.4%
Avg Gap
8.2%
Avg 50% Fill
10.5d
Avg Fill
13d
Gap Downs14 events
Fill Rate
71.4%
Avg Gap
9.6%
Avg 50% Fill
8d
Avg Fill
7.5d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 45% | 55% | 55% | 73% |
| fills 50% | 18% | 27% | 36% | 64% |
| fills 75% | 0% | 9% | 18% | 36% |
| fills 100% | 0% | 9% | 18% | 27% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 57% | 79% | 79% | 86% |
| fills 50% | 29% | 43% | 57% | 71% |
| fills 75% | 29% | 43% | 50% | 64% |
| fills 100% | 21% | 36% | 43% | 50% |
Active Unfilled Gaps (past 60 days)
36 days ago
2026-04-30
Gap %
+6.75%
Gap From
$306.33
% vs Current
-24.71%
retraced 85% to $309.41
Complete Gap History — 25 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 2026-04-30 | $306.33 | +6.75% | Open | 13d | — | 1% | 1% | 1% | 85% |
| 2026-04-29 | $380.13 | -17.26% | Filled | 2d | 6d | 31% | 100% | 100% | 100% |
| 2026-04-08 | $320.48 | +7.35% | Filled | 16d | 16d | 17% | 17% | 17% | 100% |
| 2026-04-02 | $312.20 | -7.11% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2026-03-03 | $325.83 | -5.32% | Filled | 16d | 16d | 14% | 37% | 37% | 100% |
| 2025-10-29 | $144.38 | +17.75% | Open | 17d | — | 31% | 31% | 31% | 72% |
| 2025-10-13 | $132.08 | +5.01% | Open | 2d | — | 32% | 56% | 56% | 56% |
| 2025-09-22 | $119.85 | +5.51% | Open | — | — | 7% | 7% | 7% | 7% |
| 2025-07-30 | $90.55 | +16.76% | Open | — | — | 21% | 22% | 22% | 22% |
| 2025-05-12 | $77.42 | +7.30% | Filled | 8d | 10d | 25% | 47% | 100% | 100% |
| 2025-04-23 | $71.29 | +5.30% | Filled | 1d | 6d | 54% | 100% | 100% | 100% |
| 2025-04-10 | $79.44 | -5.36% | Filled | 10d | 22d | 29% | 29% | 59% | 81% |
| 2025-04-04 | $75.09 | -5.31% | Filled | 2d | 2d | 33% | 100% | 100% | 100% |
| 2025-04-03 | $83.62 | -5.90% | Filled | 27d | 27d | 21% | 35% | 35% | 35% |
| 2025-03-11 | $104.97 | -12.46% | Open | — | — | 19% | 19% | 19% | 19% |
| 2025-01-30 | $122.05 | -16.43% | Open | 1d | — | 77% | 84% | 84% | 93% |
| 2024-10-24 | $124.43 | -5.01% | Filled | 32d | 37d | 2% | 2% | 2% | 2% |
| 2024-08-05 | $117.27 | -5.21% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2024-07-25 | $143.54 | -10.52% | Open | 20d | — | 10% | 21% | 21% | 54% |
| 2024-04-25 | $100.70 | +6.67% | Open | 1d | — | 51% | 51% | 51% | 51% |
| 2024-01-31 | $104.59 | -8.70% | Filled | 8d | 9d | 36% | 36% | 100% | 100% |
| 2022-11-10 | $84.37 | +6.67% | Filled | 27d | 30d | 23% | 26% | 26% | 38% |
| 2022-07-27 | $98.15 | -7.09% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2022-01-27 | $143.37 | -22.91% | Open | 43d | — | 6% | 31% | 36% | 36% |
| 2021-10-28 | $123.07 | +5.63% | Open | — | — | 23% | 23% | 23% | 23% |
Frequently Asked Questions
What is TER's premarket price?
Teradyne (TER) is trading at $390.36 in premarket, down $16.50 (+4.06%) from the previous close of $406.86.
When does TER premarket trading start?
Premarket trading for TER on the NASDAQ 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 TER fill its gaps?
Over the past 5 years, 36% of TER gap-ups have fully filled and 71% of gap-downs have filled. Median time to fill is 13 trading days for gap-ups and 8 trading days for gap-downs.
Does TER have any unfilled gaps?
Yes. TER has 1 unfilled gap from the past 60 days. The largest is a +6.8% gap up from Apr 30, 2026 and is currently 85% retraced.
What's the average return after a TER gap?
Based on 25 qualifying gap events over the past 5 years, the average 20-trading-day return after a TER gap up is +12.95%, and after a gap down is +3.29%.