66.89 USD
↗ 0.31 (0.47%)PRE MARKET (AS OF 05:29 AM EDT)
ALC Stock Premarket
Alcon Inc. Ordinary Shares
ALCNYSE • USD
Market: CLOSED
Premarket trading runs 4:00 AM – 9:30 AM ET.
ALC Premarket Chart
ALC Premarket News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, ALC has had 12 qualifying gap events (gaps of 5% or more at the open) — 8 gap-ups and 4 gap-downs. Gap-ups averaged +7.2%, 25% have fully filled, median time to fill 14 trading days. Gap-downs averaged -7.7%, 25% have fully filled, median time to fill 10 trading days. Most recent: a -11.3% gap down on May 6, 2026, still unfilled. ALC has 1 unfilled gap from the past 60 days — a -11.3% gap down on May 6, 2026, currently 29% retraced. Average 20-trading-day return after a ALC gap up: +3.71%. After a gap down: +1.25%.
Gap Ups8 events
Fill Rate
25.0%
Avg Gap
7.2%
Avg 50% Fill
2.5d
Avg Fill
14d
Gap Downs4 events
Fill Rate
25.0%
Avg Gap
7.7%
Avg 50% Fill
27d
Avg Fill
10d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 38% | 38% | 38% | 50% |
| fills 50% | 13% | 38% | 38% | 38% |
| fills 75% | 0% | 25% | 38% | 38% |
| fills 100% | 0% | 13% | 13% | 13% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 50% | 50% | 50% | 75% |
| fills 50% | 0% | 25% | 25% | 25% |
| fills 75% | 0% | 0% | 25% | 25% |
| fills 100% | 0% | 0% | 25% | 25% |
Active Unfilled Gaps (past 60 days)
31 days ago
2026-05-06
Gap %
-11.27%
Gap From
$74.45
% vs Current
+11.44%
retraced 29% to $68.48
Complete Gap History — 12 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 2026-05-06 | $74.45 | -11.27% | Open | — | — | 19% | 19% | 21% | 29% |
| 2025-11-12 | $77.36 | +5.18% | Filled | 1d | 4d | 51% | 100% | 100% | 100% |
| 2025-08-20 | $90.12 | -8.66% | Open | — | — | 24% | 24% | 24% | 24% |
| 2025-05-14 | $93.25 | -5.66% | Open | 48d | — | 30% | 36% | 36% | 36% |
| 2024-05-14 | $80.92 | +9.57% | Open | — | — | 18% | 18% | 20% | 20% |
| 2023-11-15 | $74.96 | -5.14% | Filled | 6d | 10d | 26% | 61% | 100% | 100% |
| 2023-05-10 | $74.31 | +5.99% | Open | — | — | 13% | 13% | 20% | 39% |
| 2023-03-30 | $67.58 | +5.24% | Open | 3d | — | 28% | 55% | 79% | 79% |
| 2022-11-16 | $63.37 | +7.69% | Open | 2d | — | 39% | 94% | 94% | 94% |
| 2022-11-10 | $57.64 | +5.90% | Open | — | — | 18% | 18% | 18% | 18% |
| 2022-05-11 | $65.29 | +5.36% | Filled | 23d | 24d | 3% | 20% | 20% | 20% |
| 2021-08-18 | $71.36 | +12.51% | Open | — | — | 18% | 18% | 18% | 18% |
Frequently Asked Questions
What is ALC's premarket price?
Alcon (ALC) is trading at $66.89 in premarket, up $0.31 (+0.47%) from the previous close of $66.58.
When does ALC premarket trading start?
Premarket trading for ALC 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 ALC fill its gaps?
Over the past 5 years, 25% of ALC gap-ups have fully filled and 25% of gap-downs have filled. Median time to fill is 14 trading days for gap-ups and 10 trading days for gap-downs.
Does ALC have any unfilled gaps?
Yes. ALC has 1 unfilled gap from the past 60 days. The largest is a -11.3% gap down from May 6, 2026 and is currently 29% retraced.
What's the average return after a ALC gap?
Based on 12 qualifying gap events over the past 5 years, the average 20-trading-day return after a ALC gap up is +3.71%, and after a gap down is +1.25%.