154.86 USD
PREVIOUS CLOSE
GH Stock Premarket
Guardant Health, Inc. Common Stock
GHNASDAQ • USD
Market: CLOSED
Premarket trading runs 4:00 AM – 9:30 AM ET.
📅 GH is expected to report earnings around Feb 18, 2027 after the close (estimated), with an estimated EPS of $-0.75. GH earnings details →
GH Premarket Chart
GH Premarket News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, GH has had 35 qualifying gap events (gaps of 5% or more at the open) — 16 gap-ups and 19 gap-downs. Gap-ups averaged +11.3%, 50% have fully filled, median time to fill 7.5 trading days. Gap-downs averaged -7.9%, 89% have fully filled, median time to fill 3 trading days. Most recent: a -7.6% gap down 9 days ago, which filled in 2 trading days. Average 20-trading-day return after a GH gap up: +5.17%. After a gap down: -0.34%.
Gap Ups16 events
Fill Rate
50.0%
Avg Gap
11.3%
Avg 50% Fill
1d
Avg Fill
7.5d
Gap Downs19 events
Fill Rate
89.5%
Avg Gap
7.9%
Avg 50% Fill
1d
Avg Fill
3d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 69% | 81% | 81% | 81% |
| fills 50% | 44% | 63% | 63% | 63% |
| fills 75% | 31% | 44% | 44% | 44% |
| fills 100% | 19% | 25% | 25% | 31% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 84% | 84% | 84% | 89% |
| fills 50% | 68% | 79% | 79% | 84% |
| fills 75% | 47% | 74% | 74% | 74% |
| fills 100% | 26% | 58% | 58% | 63% |
Complete Gap History — 35 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 9 days ago | $153.43 | -7.56% | Filled | 1d | 2d | 93% | 100% | 100% | 100% |
| 2026-07-31 | $152.35 | +6.66% | Open | 2d | — | 25% | 73% | 73% | 74% |
| 2026-07-01 | $150.03 | +7.15% | Filled | 6d | 12d | 43% | 76% | 76% | 100% |
| 2025-11-05 | $98.14 | -5.50% | Filled | 2d | 4d | 46% | 100% | 100% | 100% |
| 2025-11-04 | $98.92 | -5.58% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-10-30 | $72.27 | +24.52% | Open | — | — | 10% | 10% | 10% | 10% |
| 2025-09-04 | $65.06 | -7.78% | Filled | 16d | 23d | 29% | 38% | 38% | 72% |
| 2025-08-07 | $44.59 | +16.69% | Open | 1d | — | 51% | 51% | 51% | 51% |
| 2025-05-01 | $47.23 | +11.47% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-04-07 | $40.58 | -5.32% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-04-04 | $42.02 | -5.52% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-04-03 | $43.49 | -5.72% | Filled | 1d | 4d | 58% | 100% | 100% | 100% |
| 2025-02-03 | $46.98 | -5.26% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-01-21 | $36.66 | +6.49% | Filled | 33d | 34d | 30% | 30% | 30% | 30% |
| 2024-11-07 | $25.29 | +28.07% | Open | 1d | — | 58% | 59% | 59% | 59% |
| 2024-09-16 | $26.79 | -13.85% | Filled | 1d | 39d | 76% | 84% | 84% | 84% |
| 2024-08-26 | $29.02 | -5.65% | Filled | 53d | 53d | 6% | 6% | 6% | 6% |
| 2024-08-08 | $33.96 | -5.59% | Open | 1d | — | 64% | 64% | 64% | 64% |
| 2024-08-05 | $31.75 | -10.74% | Filled | 1d | 2d | 83% | 100% | 100% | 100% |
| 2024-05-24 | $22.51 | +16.48% | Open | 1d | — | 78% | 78% | 78% | 78% |
| 2024-05-10 | $19.44 | +10.24% | Open | — | — | 45% | 45% | 45% | 45% |
| 2024-04-02 | $20.25 | +9.88% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2024-02-23 | $22.27 | -5.70% | Filled | 1d | 27d | 80% | 80% | 80% | 80% |
| 2023-12-20 | $27.90 | -7.53% | Filled | 1d | 3d | 74% | 100% | 100% | 100% |
| 2023-05-26 | $27.87 | +7.64% | Open | 1d | — | 93% | 94% | 94% | 94% |
| 2023-05-10 | $23.99 | +8.34% | Open | — | — | 15% | 15% | 15% | 15% |
| 2023-01-09 | $25.95 | +7.90% | Filled | 31d | 32d | 24% | 35% | 35% | 35% |
| 2022-12-16 | $41.26 | -27.28% | Open | — | — | 10% | 14% | 14% | 36% |
| 2022-12-13 | $45.97 | +6.07% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2022-11-15 | $48.25 | +5.70% | Filled | 2d | 3d | 33% | 100% | 100% | 100% |
| 2022-11-10 | $41.42 | +7.27% | Filled | 24d | 24d | 0% | 0% | 0% | 0% |
| 2022-09-13 | $61.00 | -5.44% | Filled | 1d | 18d | 71% | 85% | 85% | 100% |
| 2022-08-05 | $51.09 | -7.91% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2022-06-13 | $37.50 | -5.55% | Filled | 2d | 3d | 50% | 100% | 100% | 100% |
| 2022-05-06 | $50.72 | -7.41% | Filled | 42d | 43d | 18% | 18% | 18% | 18% |
Related: GH quote & chart · After hours · Technical analysis · Fundamentals · Earnings · Short interest
Frequently Asked Questions
What is GH's premarket price?
No premarket activity has been recorded yet for GH today. The previous regular-session close was $154.86.
When does GH premarket trading start?
Premarket trading for GH 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 GH fill its gaps?
Over the past 5 years, 50% of GH gap-ups have fully filled and 89% of gap-downs have filled. Median time to fill is 8 trading days for gap-ups and 3 trading days for gap-downs.
Does GH have any unfilled gaps?
No. GH has no unfilled gap events from the past 60 days; all recent gaps have been filled.
What's the average return after a GH gap?
Based on 35 qualifying gap events over the past 5 years, the average 20-trading-day return after a GH gap up is +5.17%, and after a gap down is -0.34%.
When does GH report earnings?
GH is expected to report earnings around Feb 18, 2027 after the close (estimated), with an estimated EPS of $-0.75.