820.08 USD
AT CLOSE
ARGX Stock After Hours
argenx SE American Depositary Shares
ARGXNASDAQ • USD
Market: OPEN
After-hours trading runs 4:00 PM – 8:00 PM ET.
📅 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 21 qualifying gap events (gaps of 5% or more at the open) — 15 gap-ups and 6 gap-downs. Gap-ups averaged +9.8%, 47% have fully filled, median time to fill 15 trading days. Gap-downs averaged -10.4%, 50% have fully filled, median time to fill 7 trading days. Most recent: a -10.5% gap down 11 days ago, still unfilled. ARGX has 1 unfilled gap from the past 60 days — a -10.5% gap down on Oct 8, 2026, currently 28% retraced. Average 20-trading-day return after a ARGX gap up: +1.03%. After a gap down: -0.19%.
Gap Ups15 events
Fill Rate
46.7%
Avg Gap
9.8%
Avg 50% Fill
8d
Avg Fill
15d
Gap Downs6 events
Fill Rate
50.0%
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% | 33% | 83% | 100% | 100% |
| fills 50% | 33% | 33% | 33% | 50% |
| fills 75% | 0% | 33% | 33% | 33% |
| fills 100% | 0% | 17% | 33% | 33% |
Active Unfilled Gaps (past 60 days)
11 days ago
2026-10-08
Gap %
-10.47%
Gap From
$928.44
% vs Current
+13.34%
retraced 28% to $858.25
Complete Gap History — 21 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 11 days ago | $928.44 | -10.47% | Open | — | — | 1% | 28% | 28% | 28% |
| 2026-08-17 | $851.29 | +8.93% | Filled | 38d | 38d | 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) has no recorded after-hours trades for the latest session. Its regular-session close was $820.08. After-hours quotes appear here when the stock trades between 4:00 PM and 8:00 PM ET.
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: 47% of ARGX gap-ups have fully filled, and 50% 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.