246.20 USD
↗ 0.17 (0.07%)PRE MARKET (AS OF Fri 09:29 AM EST)
GKOS Stock Premarket
Glaukos Corporation
GKOSNYSE • USD
Market: CLOSED
Premarket trading runs 4:00 AM – 9:30 AM ET.
GKOS last traded at $246.20 in premarket, up $0.17 (0.07%) from its previous close of $246.03.
📅 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 Premarket Chart
GKOS Premarket 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% |
Related: GKOS quote & chart · After hours · Technical analysis · Fundamentals · Earnings · Short interest
Frequently Asked Questions
What is GKOS's premarket price?
Glaukos (GKOS) is trading at $246.20 in premarket, up $0.17 (0.07%) from the previous close of $246.03.
Why is GKOS moving in premarket?
Glaukos (GKOS) is up 0.07% 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 GKOS premarket headlines and gap history below for the likely catalyst.
When does GKOS premarket trading start?
Premarket trading for GKOS on the NYSE 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 GKOS fill its gaps?
Over the past 5 years, 50% of GKOS gap-ups have fully filled. Median time to fill is 35 trading days for gap-ups.
Does GKOS have any unfilled gaps?
Yes. GKOS has 1 unfilled gap from the past 60 days. The largest is a +16.3% gap up from Oct 29, 2026 and is currently 12% retraced.
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.