658.22 USD
↗ 3.42 (0.52%)AFTER HOURS (AS OF Fri 08:15 PM EDT)
TMO Stock After Hours
Thermo Fisher Scientific, Inc.
TMONYSE • USD
Market: CLOSED
After-hours trading runs 4:00 PM – 8:00 PM ET.
TMO last traded at $658.22 after hours, up $3.42 (0.52%) from its regular-session close of $654.80.
📅 TMO is scheduled to report earnings on Oct 21, 2026 before the open (confirmed), with an estimated EPS of $6.41. TMO earnings details →
TMO After Hours Chart
TMO After Hours News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, TMO has had 6 qualifying gap events (gaps of 5% or more at the open) — 4 gap-ups and 2 gap-downs. Gap-ups averaged +8.1%, 50% have fully filled, median time to fill 4.5 trading days. Gap-downs averaged -7.9%, 100% have fully filled, median time to fill 26 trading days. Most recent: a +9% gap up on Jul 23, 2026, still unfilled. Average 20-trading-day return after a TMO gap up: -0.58%. After a gap down: +5.17%.
Gap Ups4 events
Fill Rate
50.0%
Avg Gap
8.1%
Avg 50% Fill
3d
Avg Fill
4.5d
Gap Downs2 events
Fill Rate
100.0%
Avg Gap
7.9%
Avg 50% Fill
14d
Avg Fill
26d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 50% | 75% | 100% | 100% |
| fills 50% | 25% | 50% | 75% | 75% |
| fills 75% | 25% | 25% | 50% | 50% |
| fills 100% | 25% | 25% | 50% | 50% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 50% | 50% | 50% | 50% |
| fills 50% | 0% | 50% | 50% | 50% |
| fills 75% | 0% | 0% | 50% | 50% |
| fills 100% | 0% | 0% | 50% | 50% |
Complete Gap History — 6 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 2026-07-23 | $526.46 | +8.97% | Open | — | — | 10% | 38% | 38% | 38% |
| 2026-04-23 | $513.98 | -8.04% | Filled | 26d | 44d | 9% | 18% | 22% | 22% |
| 2025-07-23 | $427.62 | +10.67% | Open | 11d | — | 17% | 18% | 59% | 59% |
| 2025-04-23 | $434.73 | +5.02% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2023-10-25 | $458.26 | -7.69% | Filled | 2d | 8d | 45% | 67% | 100% | 100% |
| 2022-04-28 | $520.48 | +7.54% | Filled | 3d | 8d | 30% | 61% | 100% | 100% |
Frequently Asked Questions
What is TMO's after-hours price?
Thermo Fisher Scientific (TMO) is trading at $658.22 after hours, up $3.42 (0.52%) from its regular-session close of $654.80.
Why is TMO moving after hours?
TMO is up 0.52% 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 TMO after-hours trading start and end?
After-hours trading in TMO on the NYSE 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 TMO's after-hours move hold at the open?
An after-hours move that carries into the next session becomes an opening gap, and TMO's gap history is the best guide to what happens next: 50% of TMO gap-ups have fully filled, and 100% 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 TMO report earnings?
TMO is scheduled to report earnings on Oct 21, 2026 before the open (confirmed), with an estimated EPS of $6.41. Earnings are the most common cause of a large after-hours move, since most companies report after the close.