170.68 USD
AT CLOSE
GKOS Stock After Hours
Glaukos Corporation
GKOSNYSE • USD
Market: OPEN
After-hours trading runs 4:00 PM – 8:00 PM ET.
📅 GKOS is expected to report earnings around Nov 4, 2026 after the close (estimated), with an estimated EPS of $-0.12. GKOS earnings details →
GKOS After Hours Chart
GKOS After Hours News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, GKOS has had 1 qualifying gap-up event (5%+ at the open) and no qualifying gap-downs. Gap-ups averaged +11.5%, 0% have fully filled. Most recent: a +11.5% gap up on Jul 30, 2026, still unfilled. GKOS has 1 unfilled gap from the past 60 days — a +11.5% gap up on Jul 30, 2026, currently 80% retraced. Average 20-trading-day return after a GKOS gap up: +0.94%.
Gap Ups1 events
Fill Rate
0.0%
Avg Gap
11.5%
Avg 50% Fill
1d
Avg Fill
—
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 100% | 100% | 100% | 100% |
| fills 50% | 100% | 100% | 100% | 100% |
| fills 75% | 100% | 100% | 100% | 100% |
| fills 100% | 0% | 0% | 0% | 0% |
Active Unfilled Gaps (past 60 days)
46 days ago
2026-07-30
Gap %
+11.48%
Gap From
$161.66
% vs Current
-3.34%
retraced 80% to $165.37
Complete Gap History — 1 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 2026-07-30 | $161.66 | +11.48% | Open | 1d | — | 78% | 80% | 80% | 80% |
Frequently Asked Questions
What is GKOS's after-hours price?
Glaukos (GKOS) has no recorded after-hours trades for the latest session. Its regular-session close was $170.68. After-hours quotes appear here when the stock trades between 4:00 PM and 8:00 PM ET.
When does GKOS after-hours trading start and end?
After-hours trading in GKOS on the NYSE 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 GKOS's after-hours move hold at the open?
An after-hours move that carries into the next session becomes an opening gap, and GKOS's gap history is the best guide to what happens next: 0% of GKOS gap-ups have fully filled over the past 5 years. Fill rates this high mean a large after-hours move is more often faded than extended.
When does GKOS report earnings?
GKOS is expected to report earnings around Nov 4, 2026 after the close (estimated), with an estimated EPS of $-0.12. Earnings are the most common cause of a large after-hours move, since most companies report after the close.