After-hours trading runs 4:00 PM – 8:00 PM ET.
DGX last traded at $259.69 after hours, up $0.09 (0.03%) from its regular-session close of $259.60.
📅 DGX is expected to report earnings around Feb 9, 2027 before the open (estimated), with an estimated EPS of $2.68. DGX earnings details →
Over the past 5 years, DGX has had 3 qualifying gap events (gaps of 5% or more at the open) — 1 gap-up and 2 gap-downs. Gap-ups averaged +8.7%, 0% have fully filled. Gap-downs averaged -5.9%, 100% have fully filled, median time to fill 12 trading days. Most recent: a -5.2% gap down on Oct 22, 2026, which filled in 1 trading day. Average 20-trading-day return after a DGX gap up: +5.79%. After a gap down: +3.73%.
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 100% | 100% | 100% | 100% |
| fills 50% | 0% | 0% | 0% | 0% |
| fills 75% | 0% | 0% | 0% | 0% |
| fills 100% | 0% | 0% | 0% | 0% |
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 100% | 100% | 100% | 100% |
| fills 50% | 100% | 100% | 100% | 100% |
| fills 75% | 50% | 50% | 50% | 50% |
| fills 100% | 50% | 50% | 50% | 50% |
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 23 days ago | $238.93 | -5.20% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2026-09-22 | $244.88 | -6.65% | Filled | 1d | 23d | 53% | 62% | 62% | 75% |
| 2026-07-23 | $209.83 | +8.70% | Open | — | — | 44% | 44% | 44% | 44% |
Quest Diagnostics (DGX) is trading at $259.69 after hours, up $0.09 (0.03%) from its regular-session close of $259.60.
DGX is up 0.03% 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.
After-hours trading in DGX 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.
An after-hours move that carries into the next session becomes an opening gap, and DGX's gap history is the best guide to what happens next: 0% of DGX 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.
DGX is expected to report earnings around Feb 9, 2027 before the open (estimated), with an estimated EPS of $2.68. Earnings are the most common cause of a large after-hours move, since most companies report after the close.