21.74 USD
↗ 0.21 (1.00%)PRE MARKET (AS OF 05:29 AM EDT)
AMPH Stock Premarket
Amphastar Pharmaceuticals, Inc.
AMPHNASDAQ • USD
Market: OPEN
Premarket trading runs 4:00 AM – 9:30 AM ET.
AMPH last traded at $21.73 in premarket, up $0.21 (1.00%) from its previous close of $21.52.
📅 AMPH is expected to report earnings around Nov 5, 2026 after the close (estimated), with an estimated EPS of $0.86. AMPH earnings details →
AMPH Premarket Chart
AMPH Premarket News
Gap Analytics — 5-year history, 5% minimum gap
No qualifying gap events found for AMPH.
Frequently Asked Questions
What is AMPH's premarket price?
Amphastar Pharmaceuticals (AMPH) is trading at $21.73 in premarket, up $0.21 (1.00%) from the previous close of $21.52.
Why is AMPH moving in premarket?
Amphastar Pharmaceuticals (AMPH) is up 1.00% 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 AMPH premarket headlines and gap history below for the likely catalyst.
When does AMPH premarket trading start?
Premarket trading for AMPH 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.
When does AMPH report earnings?
AMPH is expected to report earnings around Nov 5, 2026 after the close (estimated), with an estimated EPS of $0.86.