Over the past 5 years, VRTX has had 4 qualifying gap-down events (5%+ at the open) and no qualifying gap-ups. Gap-downs averaged -9.5%, 50% have fully filled, median time to fill 21.5 trading days. Most recent: a -13.6% gap down on Aug 5, 2025, still unfilled. Average 20-trading-day return after a VRTX gap down: +0.93%.

Gap Downs4 events

Fill Rate

50.0%

Avg Gap

9.5%

Avg 50% Fill

17d

Avg Fill

21.5d

Avg 20d return after gap-down: +0.93%

Avg Gap Fill by Timeframes

Gap Downs

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

Complete Gap History — 4 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
2025-08-05	$472.27	-13.56%	Open	—	—	10%	10%	10%	10%
2025-05-06	$500.19	-6.92%	Open	45d	—	7%	7%	7%	7%
2024-12-19	$447.50	-12.63%	Filled	17d	24d	23%	36%	37%	74%
2024-08-05	$494.46	-5.04%	Filled	1d	19d	57%	57%	76%	100%

Frequently Asked Questions

What is VRTX's premarket price?

No premarket activity has been recorded yet for VRTX today. The previous regular-session close was $496.50.

When does VRTX premarket trading start?

Premarket trading for VRTX on the NASDAQ 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 VRTX fill its gaps?

Over the past 5 years, 50% of gap-downs have filled. Median time to fill is 22 trading days for gap-downs.

Does VRTX have any unfilled gaps?

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

When does VRTX report earnings?

VRTX is expected to report earnings around Aug 3, 2026 after the close (estimated), with an estimated EPS of $4.72.

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