108.38 USD
↘ 0.56 (0.51%)AFTER HOURS (AS OF 06:39 PM EDT)
CBRS Stock After Hours
Cerebras Systems Inc. Class A Common Stock
CBRSNASDAQ • USD
Market: OPEN
After-hours trading runs 4:00 PM – 8:00 PM ET.
CBRS is trading at $108.38 after hours, down $0.56 (0.51%) from its regular-session close of $108.94.
Related After HoursNVDA
CBRS After Hours Chart
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, CBRS has had 9 qualifying gap events (gaps of 5% or more at the open) — 4 gap-ups and 5 gap-downs. Gap-ups averaged +5.6%, 100% have fully filled, median time to fill 8 trading days. Gap-downs averaged -8.4%, 60% have fully filled, median time to fill 4 trading days. Most recent: a +5.2% gap up on Oct 5, 2026, which filled in 4 trading days. CBRS has 1 unfilled gap from the past 60 days — a -5.8% gap down on Sep 30, 2026, currently 15% retraced. Average 20-trading-day return after a CBRS gap up: -11.11%. After a gap down: -10.66%.
Gap Ups4 events
Fill Rate
100.0%
Avg Gap
5.6%
Avg 50% Fill
2.5d
Avg Fill
8d
Gap Downs5 events
Fill Rate
60.0%
Avg Gap
8.4%
Avg 50% Fill
2.5d
Avg Fill
4d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 75% | 100% | 100% | 100% |
| fills 50% | 50% | 75% | 75% | 75% |
| fills 75% | 0% | 50% | 75% | 75% |
| fills 100% | 0% | 50% | 50% | 75% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 60% | 80% | 80% | 80% |
| fills 50% | 20% | 80% | 80% | 80% |
| fills 75% | 20% | 80% | 80% | 80% |
| fills 100% | 20% | 60% | 60% | 60% |
Active Unfilled Gaps (past 60 days)
22 days ago
2026-09-30
Gap %
-5.78%
Gap From
$194.95
% vs Current
+78.95%
retraced 15% to $185.35
Complete Gap History — 9 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 17 days ago | $166.43 | +5.16% | Filled | 4d | 4d | 6% | 100% | 100% | 100% |
| 22 days ago | $194.95 | -5.78% | Open | — | — | 15% | 15% | 15% | 15% |
| 2026-09-14 | $191.93 | -6.29% | Filled | 2d | 4d | 44% | 100% | 100% | 100% |
| 2026-08-13 | $262.06 | -16.05% | Open | 3d | — | 48% | 98% | 98% | 98% |
| 2026-08-12 | $234.76 | +5.99% | Filled | 1d | 2d | 56% | 100% | 100% | 100% |
| 2026-07-30 | $169.39 | +5.66% | Filled | 24d | 25d | 35% | 35% | 35% | 35% |
| 2026-06-30 | $216.16 | -5.39% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2026-06-24 | $226.72 | -8.26% | Filled | 4d | 6d | 11% | 100% | 100% | 100% |
| 2026-06-08 | $201.01 | +5.77% | Filled | 1d | 12d | 73% | 73% | 89% | 100% |
Frequently Asked Questions
What is CBRS's after-hours price?
Cerebras Systems (CBRS) is trading at $108.38 after hours, down $0.56 (0.51%) from its regular-session close of $108.94.
Why is CBRS moving after hours?
CBRS is down 0.51% 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 CBRS after-hours trading start and end?
After-hours trading in CBRS 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 CBRS's after-hours move hold at the open?
An after-hours move that carries into the next session becomes an opening gap, and CBRS's gap history is the best guide to what happens next: 100% of CBRS 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.