163.20 USD
↘ 26.30 (13.90%)PRE MARKET (AS OF 09:29 AM EDT)
RGEN Stock Premarket
Repligen Corp
RGENNASDAQ • USD
Market: CLOSED
Premarket trading runs 4:00 AM – 9:30 AM ET.
RGEN last traded at $163.20 in premarket, down $26.30 (13.90%) from its previous close of $189.50. Historically, 0% of RGEN gap-downs of 5% or more have fully filled within one trading day.
📅 RGEN is expected to report earnings around Nov 3, 2026 before the open (estimated), with an estimated EPS of $0.46. RGEN earnings details →
RGEN Premarket Chart
RGEN Premarket News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, RGEN has had 2 qualifying gap events (gaps of 5% or more at the open) — 1 gap-up and 1 gap-down. Gap-ups averaged +6.6%, 0% have fully filled. Gap-downs averaged -9.3%, 100% have fully filled, median time to fill 3 trading days. Most recent: a +6.6% gap up on Jul 28, 2026, still unfilled. Average 20-trading-day return after a RGEN gap up: +30.06%. After a gap down: +25.92%.
Gap Ups1 events
Fill Rate
0.0%
Avg Gap
6.6%
Avg 50% Fill
—
Avg Fill
—
Gap Downs1 events
Fill Rate
100.0%
Avg Gap
9.3%
Avg 50% Fill
2d
Avg Fill
3d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 100% | 100% | 100% | 100% |
| fills 50% | 0% | 0% | 0% | 0% |
| fills 75% | 0% | 0% | 0% | 0% |
| fills 100% | 0% | 0% | 0% | 0% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 100% | 100% | 100% | 100% |
| fills 50% | 0% | 100% | 100% | 100% |
| fills 75% | 0% | 100% | 100% | 100% |
| fills 100% | 0% | 100% | 100% | 100% |
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 | ||||||
| 2026-07-28 | $131.06 | +6.59% | Open | — | — | 27% | 27% | 27% | 27% |
| 2026-07-21 | $145.49 | -9.31% | Filled | 2d | 3d | 45% | 100% | 100% | 100% |
Related: RGEN quote & chart · After hours · Technical analysis · Fundamentals · Earnings · Short interest
Frequently Asked Questions
What is RGEN's premarket price?
Repligen (RGEN) is trading at $163.20 in premarket, down $26.30 (13.90%) from the previous close of $189.50.
Why is RGEN moving in premarket?
Repligen (RGEN) is down 13.90% 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 RGEN premarket headlines and gap history below for the likely catalyst.
When does RGEN premarket trading start?
Premarket trading for RGEN 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 RGEN fill its gaps?
Over the past 5 years, 0% of RGEN gap-ups have fully filled and 100% of gap-downs have filled. Median time to fill is 3 trading days for gap-downs.
Does RGEN have any unfilled gaps?
No. RGEN has no unfilled gap events from the past 60 days; all recent gaps have been filled.
What's the average return after a RGEN gap?
Based on 2 qualifying gap events over the past 5 years, the average 20-trading-day return after a RGEN gap up is +30.06%, and after a gap down is +25.92%.
When does RGEN report earnings?
RGEN is expected to report earnings around Nov 3, 2026 before the open (estimated), with an estimated EPS of $0.46.