AMTM earnings date, and what happened the last 4 times

Next report

Mon Dec 14

Quality Score today 5

After the close, in 48 days. Expected: the company has not confirmed it.

AMTM closed higher after 2 of its last 4 reports. On average it closed -0.2% the session after a report.

The moment AMTM reports

Its figures, in plain words
How it moves after, beside its last four
Its Quality Score going in, and after

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What happened after AMTM's last 4 reports

AMTM's last 4 earnings reports
Reported	Score going in	Gap	Reaction	5 sessions
Aug 10, 20262026 · After close	6estimated	-5.1%	-8.2%	-16.4%
May 11, 20262026 · After close	4estimated	+6.6%	+1.6%	-2.7%
Feb 9, 20262026 · After close	15estimated	-8.1%	-12.4%	-17.9%
Nov 24, 20252025 · After close	7estimated	+11.8%	+18.3%	+13.2%

Aug 10, 2026, after the close: the next session AMTM opened -5.1% and closed -8.2%, and five sessions on it stood -16.4%. Its Quality Score going in was 6 (Average), estimated.
May 11, 2026, after the close: the next session AMTM opened +6.6% and closed +1.6%, and five sessions on it stood -2.7%. Its Quality Score going in was 4 (Below Average), estimated.
Feb 9, 2026, after the close: the next session AMTM opened -8.1% and closed -12.4%, and five sessions on it stood -17.9%. Its Quality Score going in was 15 (Excellent), estimated.
Nov 24, 2025, after the close: the next session AMTM opened +11.8% and closed +18.3%, and five sessions on it stood +13.2%. Its Quality Score going in was 7 (Average), estimated.

Across these 4 reports AMTM opened higher after 2 of 4 and closed higher after 2 of 4; on average it opened +1.3%, closed -0.2%, and stood -6.0% five sessions on. Its Quality Score is 5 today, against 6 going into its Aug 10, 2026 report.

Gap: where the stock opened the session after the report. Reaction: where that session closed. Both against the close before the report. The largest of the 4: +18.3% after the Nov 24, 2025 report. A score marked estimated was worked out afterwards from that day's prices and filings; Breakaway has recorded every score live since Sep 9 2026.

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Questions about AMTM's earnings

As of Oct 27, 2026: Amentum Holdings (AMTM): expected to report Mon Dec 14, after the close. AMTM closed higher after 2 of its last 4 reports. Its Quality Score is 5 (Below Average). Scores as of 12:12 AM ET, 15 minutes behind.

When is AMTM's next earnings date?

Expected to report Mon Dec 14, after the close, a date Breakaway expects from the company's usual timing; the company has not confirmed it. AMTM closed higher after 2 of its last 4 reports. Past behavior, not a forecast.

Does AMTM report before or after the market?

AMTM is expected to report Mon Dec 14, after the close. Its last 4 reports came after the close.

How did AMTM stock react to its last earnings report?

Aug 10, 2026, after the close: the next session AMTM opened -5.1% and closed -8.2%, and five sessions on it stood -16.4%.

Does AMTM stock usually go up after earnings?

AMTM closed higher after 2 of its last 4 reports. On average it closed -0.2% the session after a report, after opening +1.3%. Past behavior, not a forecast.

Amentum Holdings' page has its Quality Score, its chart, and its insiders' trades. Who reports this week: the earnings calendar.