245.71 USD
↘ 0.02 (0.01%)AFTER HOURS (AS OF Fri 07:45 PM EST)
GKOS Stock After Hours
Glaukos Corporation
GKOSNYSE • USD
Market: CLOSED
After-hours trading runs 4:00 PM – 8:00 PM ET.
GKOS last traded at $245.71 after hours, down $0.01 (0.01%) from its regular-session close of $245.72.
📅 GKOS is expected to report earnings around Feb 16, 2027 after the close (estimated), with an estimated EPS of $0.50. 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 2 qualifying gap-up events (5%+ at the open) and no qualifying gap-downs. Gap-ups averaged +13.9%, 50% have fully filled, median time to fill 35 trading days. Most recent: a +16.3% gap up on Oct 29, 2026, still unfilled. GKOS has 1 unfilled gap from the past 60 days — a +16.3% gap up on Oct 29, 2026, currently 12% retraced. Average 20-trading-day return after a GKOS gap up: +0.94%.
Gap Ups2 events
Fill Rate
50.0%
Avg Gap
13.9%
Avg 50% Fill
1d
Avg Fill
35d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 50% | 50% | 50% | 50% |
| fills 50% | 50% | 50% | 50% | 50% |
| fills 75% | 50% | 50% | 50% | 50% |
| fills 100% | 0% | 0% | 0% | 0% |
Active Unfilled Gaps (past 60 days)
17 days ago
2026-10-29
Gap %
+16.30%
Gap From
$181.43
% vs Current
-26.16%
retraced 12% to $207.42
Complete Gap History — 2 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 17 days ago | $181.43 | +16.30% | Open | — | — | 12% | 12% | 12% | 12% |
| 2026-07-30 | $161.66 | +11.48% | Filled | 1d | 35d | 78% | 80% | 80% | 80% |
Frequently Asked Questions
What is GKOS's after-hours price?
Glaukos (GKOS) is trading at $245.71 after hours, down $0.01 (0.01%) from its regular-session close of $245.72.
Why is GKOS moving after hours?
GKOS is down 0.01% 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 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: 50% 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 Feb 16, 2027 after the close (estimated), with an estimated EPS of $0.50. Earnings are the most common cause of a large after-hours move, since most companies report after the close.