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Amentum Holdings, Inc.

AMTM Industrials
$27.9 $-0.1 (-0.36%)
Market Cap: $6.81 B
Gurus Holding
12
Popularity Rank
#259
% of Shares Held
2.74%
Net Activity (Q4 2025)
+$34.78 M

Guru Ownership Trend

Guru Analysis for Amentum Holdings, Inc. (AMTM)

Amentum Holdings, Inc. (AMTM), a key player in the Industrials sector, continues to attract institutional attention.

As of Q4 2025, a total of 12 Super Investors (Gurus) hold positions in the company, with a combined stake valued at approximately $186.79 M.

Top institutional holders include Ruane Cunniff and Cliff Asness.

Institutional sentiment is currently Bullish. This is evidenced by a $34.78 M net inflow during the quarter.

Recent activity highlights Cliff Asness who increased their stake by 778.9%. Conversely, Steven Cohen reduced exposure by 49.7%.

Key Holders

Top 5 by Value

$69.43 M
$42.11 M
$20.16 M
$18.43 M
$14.36 M

Top 5 by Conviction

Recent Activity Breakdown (Q4 2025)

+$56.93 M
Total Buy Value
New Buys 3
Additions 5
-$22.15 M
Total Sell Value
Reductions 3
Sold Out 1

Guru Consensus (Q4 2025)

Based on recent activity
Net Sellers
4
Net Buyers
8

FAQs for Amentum Holdings, Inc. (AMTM)

Major holders include Ruane Cunniff ($69.43 M), Cliff Asness ($42.11 M), Steven Cohen ($20.16 M). According to the latest reported data, 12 tracked investment managers collectively hold approximately 6.69 M shares.

According to the latest 13F reporting period, sentiment appears Bullish (Net Buying). There was a net inflow of $34.78 M, with 8 managers increasing positions and 4 managers reducing holdings.

During the most recent reporting period, 3 managers trimmed their positions, while 1 fully exited AMTM. The total reported sell value was $22.15 M.

Yes, 3 managers opened new positions in AMTM, and 5 increased their existing holdings. The total reported buy value was $56.93 M.

Portfolio Manager % Portfolio Activity Shares Value Report Date
1.08% Reduce -1.2% 2,394,129 $69.43 M Q4 2025
0.02% Add 778.9% 1,452,049 $42.11 M Q4 2025
0.02% Reduce -49.7% 695,287 $20.16 M Q4 2025
0.07% Add 159.5% 635,430 $18.43 M Q4 2025
0.15% Add 9.0% 495,286 $14.36 M Q4 2025
0.20% Add 16.7% 475,314 $13.78 M Q4 2025
0.02% Add 0.1% 268,375 $7.78 M Q4 2025
0.04% New Buy 109,303 $3.17 M Q4 2025
0.03% Reduce -7.8% 91,861 $2.66 M Q4 2025
1.39% New Buy 49,094 $1.42 M Q4 2025
0.00% New Buy 18,251 $529,279 Q4 2025
0.00% 10,457 $303,253 Q4 2025
Date
Insider Name
Transaction
Value
Shares
Position / Chg
SEC Form