Amentum Holdings Inc (AMTM) Hedge Fund Ownership (Q1 2026)

Amentum Holdings Inc (AMTM)

480 + Investors. Track Smart Money conviction in AMTM. See who's accumulating, reducing, or initiating positions.

Smart Money Signals — AMTM

Based on 487 hedge funds · latest filing: 2026 Q1 · updated quarterly

📈

Buying streak — 2 quarters in a row

last 6Q

For 2 consecutive quarters, more hedge funds added AMTM than sold it. That's a consistent pattern of professional buying — not a one-time trade. When institutions keep buying quarter after quarter, it usually means they see a multi-year opportunity, not just a short-term momentum flip.

🏔️

At the ownership peak (100% of max)

100% of all-time peak

487 hedge funds hold AMTM right now — the highest count in 3.0 years. When ownership is this concentrated, any bad news can trigger a chain reaction: one big fund sells, others follow. This is a classic 'crowded trade' — high popularity doesn't equal safety.

🚀

Fast accumulation — +21% more funds vs a year ago

fund count last 6Q

+83 new funds entered over the past year (+21% YoY). That's a rapid rush of institutional money. Fast accumulation often signals a major thesis — but it also means the stock could fall quickly if that thesis breaks.

🟡

Slight buying edge — 50% buying

227 buying227 selling

Last quarter: 227 funds bought or added vs 227 that reduced or exited. It's nearly a 50/50 split — some institutions are convinced, others are taking profits. This mixed picture is normal near price highs.

⚠️

Fewer new buyers each quarter (-20 vs last Q)

new funds entering per quarter

Funds opening this position for the first time: 113 → 74 → 95 → 75. Each quarter fewer new institutions are entering. This usually means most funds that wanted in are already in — the stock is well-known but the pool of potential new buyers is shrinking.

🔄

Mostly new holders — 28% entered in last year

■ 3% conviction (2yr+) ■ 69% medium ■ 28% new

Only 14 funds (3%) have held >2 years. The majority of current holders are relatively new to the position. New holders tend to sell faster when prices drop — a shallow conviction base that could amplify any sell-off.

💎

Buying through price weakness — shares +5%, value -10%

Value

-10%

+5%

Last quarter: funds added +5% more shares while total portfolio value only changed -10%. Institutions were buying while the price was falling — a high-conviction accumulation signal. They're deliberately loading up on the dip.

➡️

Steady discovery — ~75 new funds/quarter

74 → 113 → 74 → 95 → 75 new funds/Q

New funds entering each quarter: 113 → 74 → 95 → 75. Consistent flow of new institutional buyers without clear acceleration or slowdown.

📊

Mixed cohorts — 2% veterans, 33% new entrants

■ 2% veterans ■ 64% 1-2yr ■ 33% new

Of 511 current holders: 12 (2%) held 2+ years, 328 held 1–2 years, 171 (33%) entered in the past year. Balanced distribution — some institutional memory, some recent momentum buyers.

🏆

Elite ownership — 45% AUM from top-100 funds

45% from top-100 AUM funds

52 of 484 holders are among the 100 largest funds by AUM, controlling 45% of total institutional value in AMTM. When the biggest players dominate the cap table, it signifies deep institutional support — since mega-funds deploy the most rigorous due diligence and capital.

3.9

out of 10

Low Exit Risk

Exit risk score 3.9/10 — low institutional crowding. Ownership is below peak levels, holder base is relatively sticky, and buying momentum is positive.

Methodology note: these Smart Money cards use consecutive 13F disclosure snapshots, not trade-by-trade execution data. "Buying", "selling", "new holders", and "trimmed" refer to quarter-over-quarter changes in reported holders, aggregate shares, or disclosed position values between filings. They are useful for ownership regime analysis and crowding, but they do not imply exact trade timing on the filing date.

Metric	All 13F Filers (2026 Q1)	Prior (2025 Q4)	Change
Funds Holding	480	479	0.21%
13F Shares	216M	207M	4.12%
Total Value	$5.22B	$5.85B	-10.8%
New Positions	70	95	-25
Increased Positions	149	133	+16
Closed Positions	69	66	+3
Reduced Positions	149	152	-3
Total Calls	15	11	36.36%
Total Puts	12	9	33.33%
PUT/CALL Ratio	0.8	0.82	Neutral

Metric

All 13F Filers (2026 Q1)

Prior (2025 Q4)

Change

Funds Holding

480

479

0.21%

13F Shares

216M

207M

4.12%

Total Value

$5.22B

$5.85B

-10.8%

New Positions

-25

Increased Positions

149

133

+16

Closed Positions

Reduced Positions

149

152

-3

Total Calls

36.36%

Total Puts

33.33%

PUT/CALL Ratio

0.8

0.82

Neutral

Institutional Holders (2026 Q2)

480 + investors

Explore institutional interest and hedge fund ownership dynamics. Analyze portfolio weights, new positions, and conviction trends in AMTM. Verified SEC 13F-HR filings.

QUARTER:

2026 Q2 filings are still coming in. Only funds that have filed so far are shown — top holders may not have reported yet. Full 13F data typically settles by ~50 days after quarter-end.

FILTER:All New Added To Reduced No Change | Overweight >5%

Top 25 AMTM holders by conviction (% of portfolio weight) — 2026 Q1 · Source: SEC Form 13F
#	Investor	% of Portfolio	Shares	Mkt Value
1	Segra Capital Management, LLC	8.50%	2,037,890	$42.1M
2	Avenir Corp	2.04%	811,726	$16.8M
3	Hudson Value Partners, LLC	1.30%	250,185	$5.2M
4	Arvin Capital Management LP	1.21%	450,000	$9.3M
5	Arvin Capital Management LP	1.12%	416,705	$8.6M
6	Ridge Creek Global, Inc	1.10%	68,418	$1.4M
7	Cacti Asset Management LLC	0.91%	881,692	$18.2M
8	De Lisle Partners LLP	0.85%	374,818	$7.7M
9	Segra Capital Management, LLC	0.83%	200,000	$4.1M
10	Cascade Investment Advisors, Inc.	0.82%	72,340	$1.5M
11	Hahn Capital Management LLC	0.62%	49,705	$1.0M
12	Shapiro Capital Management LLC	0.60%	475,970	$9.8M
13	Rovida Investment Management Ltd	0.44%	315,000	$6.5M
14	Dba Trading, LLC	0.41%	31,196	$814K
15	Paragon Capital Management LLC	0.41%	42,651	$882K
16	Dynamic Technology Lab Private Ltd	0.35%	76,540	$1.6M
17	Telos Capital Management, Inc.	0.34%	185,611	$3.8M
18	CenterBook Partners LP	0.33%	328,766	$6.8M
19	Steadtrust LLC	0.32%	30,400	$628K
20	First National Bank of Omaha	0.27%	475,992	$9.7M
21	Mraz, Amerine & Associates, Inc.	0.27%	90,200	$1.9M
22	Dover Advisors, LLC	0.26%	22,219	$644K
23	Legal Advantage Investments, Inc.	0.21%	28,900	$597K
24	Fox Run Management, L.L.C.	0.19%	56,706	$1.2M
25	Intrinsic Value Partners, LLC	0.19%	13,399	$277K

Investor	Ownership History	% of Portfolio	Prev %	Rank	Conviction	Avg Buy Price	13F Score™ 3Y / 7Y	Sell Timing	Shares	Mkt Value	Change	Change %	Source	Quarter	Filed

Frequently Asked Questions — Amentum Holdings Inc (AMTM)

What does the Smart Money Trend signal show for AMTM?

Buying streak — 2 quarters in a row: For 2 consecutive quarters, more hedge funds added AMTM than sold it. That's a consistent pattern of professional buying — not a one-time trade. When institutions keep buying quarter after quarter, it usually means they see a multi-year opportunity, not just a short-term momentum flip.

What is the institutional breadth score for AMTM?

Slight buying edge — 50% buying: Last quarter: 227 funds bought or added vs 227 that reduced or exited. It's nearly a 50/50 split — some institutions are convinced, others are taking profits. This mixed picture is normal near price highs.

What is the fund quality score for AMTM holders?

Elite ownership — 45% AUM from top-100 funds: 52 of 484 holders are among the 100 largest funds by AUM, controlling 45% of total institutional value in AMTM. When the biggest players dominate the cap table, it signifies deep institutional support — since mega-funds deploy the most rigorous due diligence and capital.

How long have hedge funds held AMTM?

Mostly new holders — 28% entered in last year: Only 14 funds (3%) have held >2 years. The majority of current holders are relatively new to the position. New holders tend to sell faster when prices drop — a shallow conviction base that could amplify any sell-off.

Where does this institutional ownership data come from?

All holdings data is sourced from SEC Form 13F filings, which institutional investment managers with over $100 million in assets are required to submit quarterly. Data is parsed directly from SEC EDGAR.

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Amentum Holdings Inc (AMTM)

Smart Money Signals — AMTM

Buying streak — 2 quarters in a row

At the ownership peak (100% of max)

Fast accumulation — +21% more funds vs a year ago

Slight buying edge — 50% buying

Fewer new buyers each quarter (-20 vs last Q)

Mostly new holders — 28% entered in last year

Buying through price weakness — shares +5%, value -10%

Steady discovery — ~75 new funds/quarter

Mixed cohorts — 2% veterans, 33% new entrants

Elite ownership — 45% AUM from top-100 funds

Institutional Sentiment Summary — AMTM

Hedge Fund Ownership: AMTM

Market Analysis: AMTM

Analyst Price Targets

Analyst Recommendations

Stock Performance

Company Profile: AMTM

Hedge Fund Positioning: AMTM

Statistics: AMTM

Valuation Measures Data as of: --

Financial Highlights

Institutional Holders (2026 Q2)

Frequently Asked Questions — Amentum Holdings Inc (AMTM)

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