NYSE · AMTM · stock
Amentum Holdings, Inc. (AMTM) stock price history
Every NYSE trading session of Amentum Holdings, Inc. from Sep 24, 2024 to Sep 29, 2026: 505 daily bars, adjusted for splits and dividends, with minute bars from Jul 13, 2026 forward. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.
AMTM adjusted close, 2024 to 2026
- $37.53
- All time high, 2026
- $38.11
- 52 week high, $17.89 low
- 505
- Daily sessions since 2024
Last updated Sep 29, 2026, the last stored session. Refreshes after each trading day. Full 2024 to 2026 series and minute bars.
AMTM key facts
- Amentum Holdings, Inc. (AMTM) closed at $18.15 on Sep 29, 2026 on NYSE.
- AMTM's all time high close is $37.53, set on Feb 6, 2026; its all time low close is $16.43 on Apr 8, 2025.
- AMTM's 52 week range is $17.89 to $38.11.
- AMTM returned -20.5% over the year to Sep 29, 2026.
- Since Sep 24, 2024 AMTM returned -38%, -21.5% a year compounded.
- AMTM's deepest drawdown was -51.6% from Feb 6, 2026 to Sep 29, 2026.
- DataCedar holds 505 daily sessions of AMTM history from Sep 24, 2024 and minute bars from Jul 13, 2026, adjusted for splits and dividends, served by the API under a key.
AMTM price chart, 2024 to 2026
AMTM returns
Price return from the last close on or before the window start to Sep 29, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -10.6% |
| 3 months | -10.3% |
| 6 months | -29.8% |
| Year to date | -38.1% |
| 1 year | -20.5% |
| 3 years | n/a |
| 5 years | n/a |
| 10 years | n/a |
| Since Sep 24, 2024 | -38.5% |
| Compound annual growth, 2.0 years | -21.5% |
AMTM records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $37.53 on Feb 6, 2026
- All time low close
- $16.43 on Apr 8, 2025
- 52 week high
- $38.11 on Feb 6, 2026
- 52 week low
- $17.89 on Sep 29, 2026
- Deepest drawdown
- -51.6% from Feb 6, 2026 to Sep 29, 2026, not yet recovered
- Best single session
- +25.6% on Sep 30, 2024
- Worst single session
- -20.2% on Oct 1, 2024
- Volatility, 1 year annualised
- 46.5%
- Sessions closing higher, 1 year
- 46%
- Best calendar year
- 2025, +38%
- Worst calendar year
- 2025, +38%
AMTM price history by year
Open is the first session's open, high and low span the year, close is the last session's close, and the return is close over the previous year's close. 2024 starts on Sep 24, 2024; 2026 runs to Sep 29, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $29.10 | $38.11 | $17.89 | $18.15 | -37.4% | 382.1M | 186 |
| 2025 | $21.41 | $31.87 | $16.01 | $29.00 | +37.9% | 532.1M | 250 |
| 2024 | $32.00 | $34.50 | $18.38 | $21.03 | n/a | 212.5M | 69 |
AMTM monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | $18.15 | -9.2% |
| August 2026 | $19.99 | -10.0% |
| July 2026 | $22.20 | +7.4% |
| June 2026 | $20.67 | -11.0% |
| May 2026 | $23.23 | -11.4% |
| April 2026 | $26.23 | +0.6% |
| March 2026 | $26.08 | -12.7% |
| February 2026 | $29.87 | -16.5% |
| January 2026 | $35.78 | +23.4% |
| December 2025 | $29.00 | +1.3% |
| November 2025 | $28.63 | +27.8% |
| October 2025 | $22.41 | -6.4% |
About the AMTM data
Daily bars. 505 sessions from Sep 24, 2024 to Sep 29, 2026, one row per NYSE trading day with open, high, low, close and volume. Prices are adjusted for splits and cash dividends so the series is comparable across its whole length; the API also serves the raw, split only and dividend only views.
Minute bars. Stored from Jul 13, 2026 forward, most recent session Sep 28, 2026. Minute history is captured from the day collection began and is never backfilled, so this start date is exact. Five minute, fifteen minute and hourly bars are derived from these minutes.
Time and currency. Session dates are NYSE trading days; minute timestamps are UTC. Prices are in USD. Volume is shares traded on the session.
Get the data. The REST endpoint returns the daily series as JSON with pagination; a free key serves the last year, Quant and above the full history back to Sep 24, 2024, and minute bars come with the paid windows. It takes timeframe (1Min, 5Min, 15Min, 1Hour, 1Day), adjustment, start and end. See the bars endpoint and authentication, and pricing for the plan windows.
curl "https://api.datacedar.com/v3/stocks/AMTM/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on NYSE
Common questions
AMTM share price history
