Over the past 5 years, AZN has had 12 qualifying gap events (gaps of 5% or more at the open) — 6 gap-ups and 6 gap-downs. Gap-ups averaged +21.9%, 33% have fully filled, median time to fill 11.5 trading days. Gap-downs averaged -6.7%, 83% have fully filled, median time to fill 19 trading days. Most recent: a +5.3% gap up on Aug 5, 2026, which filled in 8 trading days. Average 20-trading-day return after a AZN gap up: +2.06%. After a gap down: +2.94%.

Gap Ups6 events

Fill Rate

33.3%

Avg Gap

21.9%

Avg 50% Fill

Avg Fill

11.5d

Avg 20d return after gap-up: +2.06%

Gap Downs6 events

Fill Rate

83.3%

Avg Gap

6.7%

Avg 50% Fill

Avg Fill

19d

Avg 20d return after gap-down: +2.94%

Avg Gap Fill by Timeframes

Gap Ups

	1 day	1 week	2 week	4 week
fills 25%	50%	50%	50%	50%
fills 50%	0%	33%	50%	50%
fills 75%	0%	33%	33%	50%
fills 100%	0%	0%	17%	33%

Gap Downs

	1 day	1 week	2 week	4 week
fills 25%	50%	67%	83%	100%
fills 50%	17%	33%	50%	67%
fills 75%	0%	17%	33%	67%
fills 100%	0%	0%	0%	67%

Complete Gap History — 12 events

Date	Gap From	Gap %	Status	Days to 50%	Days to Fill	% of Gap Filled After
Date	Gap From	Gap %	Status	Days to 50%	Days to Fill	1 day	1 week	2 week	4 week
2026-08-05	$155.62	+5.25%	Filled	5d	8d	38%	82%	100%	100%
2026-08-03	$169.64	-7.35%	Filled	3d	17d	20%	58%	58%	100%
2026-07-09	$189.28	-8.36%	Open	—	—	43%	43%	43%	43%
2026-02-02	$92.77	+102.11%	Open	—	—	1%	4%	4%	4%
2025-10-01	$76.72	+5.62%	Open	—	—	5%	5%	5%	5%
2025-04-07	$68.46	-5.38%	Filled	1d	12d	70%	96%	99%	100%
2024-11-05	$71.43	-6.01%	Filled	54d	58d	10%	10%	10%	35%
2024-04-25	$71.20	+5.32%	Open	—	—	13%	13%	13%	13%
2024-02-08	$66.55	-6.81%	Filled	7d	21d	41%	41%	89%	100%
2023-07-03	$71.57	-6.26%	Filled	14d	19d	5%	12%	41%	100%
2023-02-09	$64.36	+6.13%	Filled	11d	15d	26%	26%	56%	100%
2022-11-10	$61.05	+7.08%	Open	2d	—	27%	79%	79%	79%

Frequently Asked Questions

What is AZN's premarket price?

AstraZeneca (AZN) is trading at $161.48 in premarket, down $2.30 (1.40%) from the previous close of $163.78.

Why is AZN moving in premarket?

AstraZeneca (AZN) is down 1.40% 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 AZN premarket headlines and gap history below for the likely catalyst.

When does AZN premarket trading start?

Premarket trading for AZN 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 AZN fill its gaps?

Over the past 5 years, 33% of AZN gap-ups have fully filled and 83% of gap-downs have filled. Median time to fill is 12 trading days for gap-ups and 19 trading days for gap-downs.

Does AZN have any unfilled gaps?

No. AZN has no unfilled gap events from the past 60 days; all recent gaps have been filled.

What's the average return after a AZN gap?

Based on 12 qualifying gap events over the past 5 years, the average 20-trading-day return after a AZN gap up is +2.06%, and after a gap down is +2.94%.

When does AZN report earnings?

AZN is expected to report earnings around Oct 30, 2026 before the open (estimated), with an estimated EPS of $2.62.

Markets Movers Watchlist