173.19 USD
↘ 2.46 (1.40%)AFTER HOURS (AS OF Tue 04:00 PM EDT)
GH Stock After Hours
Guardant Health, Inc. Common Stock
GHNASDAQ • USD
Market: OPEN
After-hours trading runs 4:00 PM – 8:00 PM ET.
GH last traded at $173.19 after hours, down $2.46 (1.40%) from its regular-session close of $175.65.
📅 GH is expected to report earnings around Oct 28, 2026 after the close (estimated), with an estimated EPS of $-0.29. GH earnings details →
GH After Hours Chart
GH After Hours News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, GH has had 36 qualifying gap events (gaps of 5% or more at the open) — 17 gap-ups and 19 gap-downs. Gap-ups averaged +11%, 53% have fully filled, median time to fill 3 trading days. Gap-downs averaged -7.8%, 84% have fully filled, median time to fill 3.5 trading days. Most recent: a +6.7% gap up on Jul 31, 2026, still unfilled. GH has 1 unfilled gap from the past 60 days — a +6.7% gap up on Jul 31, 2026, currently 84% retraced. Average 20-trading-day return after a GH gap up: +5.14%. After a gap down: -0.37%.
Gap Ups17 events
Fill Rate
52.9%
Avg Gap
11.0%
Avg 50% Fill
1d
Avg Fill
3d
Gap Downs19 events
Fill Rate
84.2%
Avg Gap
7.8%
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% | 71% | 82% | 82% | 82% |
| fills 50% | 47% | 65% | 65% | 65% |
| fills 75% | 35% | 47% | 47% | 47% |
| fills 100% | 24% | 29% | 29% | 35% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 79% | 79% | 79% | 84% |
| fills 50% | 63% | 74% | 74% | 79% |
| fills 75% | 42% | 68% | 68% | 68% |
| fills 100% | 26% | 53% | 53% | 58% |
Active Unfilled Gaps (past 60 days)
47 days ago
2026-07-31
Gap %
+6.66%
Gap From
$152.35
% vs Current
-13.27%
retraced 84% to $154.00
Complete Gap History — 36 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% |
| 2021-10-04 | $107.51 | +7.07% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2021-10-01 | $125.01 | -5.70% | Open | — | — | 2% | 2% | 2% | 5% |
Frequently Asked Questions
What is GH's after-hours price?
Guardant Health (GH) is trading at $173.19 after hours, down $2.46 (1.40%) from its regular-session close of $175.65.
Why is GH moving after hours?
GH is down 1.40% in after-hours trading. Moves in this session almost always follow something released after the 4:00 PM ET close — an earnings report, guidance, a filing, or news — and trade on far thinner volume than the regular session, so the size of the move can overstate what the market will settle on at the next open.
When does GH after-hours trading start and end?
After-hours trading in GH on the NASDAQ runs from 4:00 PM to 8:00 PM ET on trading days, immediately after the regular session closes. Not every broker offers the full window, and liquidity thins sharply after about 6:30 PM ET.
Will GH's after-hours move hold at the open?
An after-hours move that carries into the next session becomes an opening gap, and GH's gap history is the best guide to what happens next: 53% of GH gap-ups have fully filled, and 84% of gap-downs have filled over the past 5 years. Fill rates this high mean a large after-hours move is more often faded than extended.
When does GH report earnings?
GH is expected to report earnings around Oct 28, 2026 after the close (estimated), with an estimated EPS of $-0.29. Earnings are the most common cause of a large after-hours move, since most companies report after the close.