972.77 USD
↗ 0.52 (0.05%)AFTER HOURS (AS OF Mon 07:30 PM EDT)
ARGX Stock After Hours
argenx SE American Depositary Shares
ARGXNASDAQ • USD
Market: CLOSED
After-hours trading runs 4:00 PM – 8:00 PM ET.
ARGX last traded at $972.77 after hours, up $0.52 (0.05%) from its regular-session close of $972.25.
📅 ARGX is expected to report earnings around Oct 29, 2026 (estimated), with an estimated EPS of $6.69. ARGX earnings details →
ARGX After Hours Chart
ARGX After Hours News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, ARGX has had 20 qualifying gap events (gaps of 5% or more at the open) — 15 gap-ups and 5 gap-downs. Gap-ups averaged +9.8%, 40% have fully filled, median time to fill 14.5 trading days. Gap-downs averaged -10.4%, 60% have fully filled, median time to fill 7 trading days. Most recent: a +8.9% gap up on Aug 17, 2026, still unfilled. ARGX has 1 unfilled gap from the past 60 days — a +8.9% gap up on Aug 17, 2026, currently 2% retraced. Average 20-trading-day return after a ARGX gap up: +1.03%. After a gap down: -0.19%.
Gap Ups15 events
Fill Rate
40.0%
Avg Gap
9.8%
Avg 50% Fill
6.5d
Avg Fill
14.5d
Gap Downs5 events
Fill Rate
60.0%
Avg Gap
10.4%
Avg 50% Fill
6.5d
Avg Fill
7d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 67% | 73% | 73% | 80% |
| fills 50% | 20% | 33% | 40% | 60% |
| fills 75% | 7% | 20% | 20% | 47% |
| fills 100% | 7% | 7% | 13% | 33% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 40% | 80% | 100% | 100% |
| fills 50% | 40% | 40% | 40% | 60% |
| fills 75% | 0% | 40% | 40% | 40% |
| fills 100% | 0% | 20% | 40% | 40% |
Active Unfilled Gaps (past 60 days)
43 days ago
2026-08-17
Gap %
+8.93%
Gap From
$851.29
% vs Current
-12.44%
retraced 2% to $925.66
Complete Gap History — 20 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 2026-08-17 | $851.29 | +8.93% | Open | — | — | 2% | 2% | 2% | 2% |
| 2025-12-15 | $877.94 | -5.58% | Filled | 1d | 3d | 51% | 100% | 100% | 100% |
| 2025-10-01 | $737.56 | +5.20% | Open | 22d | — | 32% | 32% | 32% | 32% |
| 2025-07-31 | $598.89 | +14.94% | Open | 8d | — | 26% | 31% | 64% | 64% |
| 2025-05-08 | $622.93 | -8.43% | Filled | 55d | 58d | 13% | 15% | 45% | 47% |
| 2024-10-31 | $551.71 | +6.87% | Open | 1d | — | 61% | 61% | 61% | 83% |
| 2024-09-25 | $519.76 | +5.64% | Filled | 2d | 11d | 38% | 86% | 100% | 100% |
| 2024-07-25 | $464.36 | +5.21% | Open | 1d | — | 69% | 69% | 69% | 69% |
| 2024-06-24 | $394.47 | +11.54% | Open | — | — | 24% | 25% | 25% | 25% |
| 2024-03-21 | $356.95 | +15.09% | Filled | 13d | 38d | 30% | 40% | 49% | 99% |
| 2023-12-20 | $452.58 | -23.64% | Open | 12d | — | 1% | 40% | 48% | 67% |
| 2023-11-28 | $495.77 | -8.82% | Open | — | — | 4% | 27% | 27% | 38% |
| 2023-07-17 | $379.08 | +25.96% | Open | — | — | 3% | 3% | 3% | 3% |
| 2022-11-30 | $377.72 | +5.85% | Filled | 5d | 14d | 31% | 76% | 76% | 100% |
| 2022-07-28 | $357.86 | +8.20% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2022-05-13 | $290.29 | +7.67% | Open | — | — | 44% | 46% | 46% | 46% |
| 2022-05-10 | $269.58 | +7.88% | Open | — | — | 0% | 43% | 43% | 43% |
| 2022-05-09 | $316.43 | -5.58% | Filled | 1d | 7d | 57% | 90% | 100% | 100% |
| 2021-12-20 | $310.26 | +9.45% | Filled | 14d | 15d | 14% | 14% | 14% | 100% |
| 2021-10-29 | $280.83 | +9.06% | Filled | 14d | 17d | 34% | 34% | 34% | 100% |
Frequently Asked Questions
What is ARGX's after-hours price?
argenx SE American (ARGX) is trading at $972.77 after hours, up $0.52 (0.05%) from its regular-session close of $972.25.
Why is ARGX moving after hours?
ARGX is up 0.05% in after-hours trading. Moves in this session almost always follow something released after the 4:00 PM ET close — an earnings report, guidance, a filing, or news — and trade on far thinner volume than the regular session, so the size of the move can overstate what the market will settle on at the next open.
When does ARGX after-hours trading start and end?
After-hours trading in ARGX on the NASDAQ runs from 4:00 PM to 8:00 PM ET on trading days, immediately after the regular session closes. Not every broker offers the full window, and liquidity thins sharply after about 6:30 PM ET.
Will ARGX's after-hours move hold at the open?
An after-hours move that carries into the next session becomes an opening gap, and ARGX's gap history is the best guide to what happens next: 40% of ARGX gap-ups have fully filled, and 60% of gap-downs have filled over the past 5 years. Fill rates this high mean a large after-hours move is more often faded than extended.
When does ARGX report earnings?
ARGX is expected to report earnings around Oct 29, 2026 (estimated), with an estimated EPS of $6.69. Earnings are the most common cause of a large after-hours move, since most companies report after the close.