Amentum Holdings, Inc. (AMTM)
NYSE: AMTM · Real-Time Price · USD
21.76
+0.47 (2.21%)
At close: Oct 23, 2026, 4:00 PM EDT
21.50
-0.26 (-1.19%)
After-hours: Oct 23, 2026, 7:59 PM EDT
Amentum Holdings Market Cap
Amentum Holdings has a market cap or net worth of $5.32 billion as of October 23, 2026. It is the 3,439th most valuable company in the world and the 1,111th biggest in the United States. Its market cap has decreased by 2.12% in one year.
Market Cap
5.32B
Enterprise Value
8.69B
1-Year Change
-2.12%
Global Rank
Country Rank
#1,111 United States
Category
ChartMarket Cap Chart
Since September 24, 2024, Amentum Holdings's market cap has decreased from $7.18B to $5.32B, a decrease of -25.89%. That is a compound annual growth rate of -13.42%.
| Date | Market Cap | % Change |
|---|---|---|
| Oct 23, 2026 | 5.32B | -24.72% |
| Dec 31, 2025 | 7.07B | 38.13% |
| Dec 31, 2024 | 5.12B | -28.73% |
| Sep 24, 2024 | 7.18B | - |
Market Capitalization
Market capitalization, also called net worth, is the total value of all of a company's outstanding shares. It is calculated by multiplying the stock price by the number of shares outstanding.
Formula: Market Cap = Stock Price * Shares Outstanding
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