145.78 USD
↘ 23.30 (13.80%)PRE MARKET (AS OF 09:29 AM EDT)
GH Stock Premarket
Guardant Health, Inc. Common Stock
GHNASDAQ • USD
Market: OPEN
Premarket trading runs 4:00 AM – 9:30 AM ET.
GH last traded at $145.78 in premarket, down $23.30 (13.80%) from its previous close of $169.08. Historically, 28% of GH gap-downs of 5% or more have fully filled within one trading day.
📅 GH is scheduled to report earnings on Oct 28, 2026 after the close (confirmed), with an estimated EPS of $-0.38. 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 34 qualifying gap events (gaps of 5% or more at the open) — 16 gap-ups and 18 gap-downs. Gap-ups averaged +11.3%, 50% have fully filled, median time to fill 7.5 trading days. Gap-downs averaged -8%, 89% have fully filled, median time to fill 3.5 trading days. Most recent: a +6.7% gap up on Jul 31, 2026, still unfilled. 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 Downs18 events
Fill Rate
88.9%
Avg Gap
8.0%
Avg 50% Fill
1d
Avg Fill
3.5d
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% | 83% | 83% | 83% | 89% |
| fills 50% | 67% | 78% | 78% | 83% |
| fills 75% | 44% | 72% | 72% | 72% |
| fills 100% | 28% | 56% | 56% | 61% |
Complete Gap History — 34 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 2026-07-31 | $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?
Guardant Health (GH) is trading at $145.78 in premarket, down $23.30 (13.80%) from the previous close of $169.08.
Why is GH moving in premarket?
Guardant Health (GH) is down 13.80% from its previous close in premarket trading. Premarket moves are usually driven by company-specific news, earnings results, analyst rating or price-target changes, or broad market and sector sentiment. Check the latest GH premarket headlines and gap history below for the likely catalyst.
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 4 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 34 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 scheduled to report earnings on Oct 28, 2026 after the close (confirmed), with an estimated EPS of $-0.38. Guardant Health is widely expected to report its Q3 2026 financial results on October 28, 2026. This date is consistent across major financial platforms like MarketBeat, TipRanks, and Public.com, following the company's historical pattern of reporting in late October or early November.