Stock Analysis
Data Source: SEC EDGAR 13F
Updated Hourly

Amentum Holdings Inc (AMTM)

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

Current Price
-- USD
Analyst Target
-- (0 analysts)
Upside
0.00%
Net Flow Q/Q
↑ +7
Streak
2Q ▲
Buyers last Q
50%

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%
Shares
+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
53 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.

Institutional Sentiment Summary — AMTM

In 2026 Q1, 227 hedge funds were net buyers of AMTM (75 opened a new position, 152 added to an existing one), while 227 reduced or exited (159 trimmed, 68 sold completely) — a 50% buyer ratio, indicating a slight buying edge. Net buying has persisted for two consecutive quarters, a positive momentum signal. 45% of total institutional value in AMTM is held by top-100 AUM funds, reflecting elite-tier ownership quality. Net fund flow last quarter: +7 funds (more new holders than closures). Total institutional holders: 487.

Hedge Fund Ownership: AMTM

How many hedge funds hold AMTM — quarterly history vs. share price
Quarterly hedge fund ownership of AMTM vs. share price

Market Analysis: AMTM

Analyst Price Targets

Avg. Price Target
--

Analyst Recommendations

Stock Performance

Real-time

Company Profile: AMTM

-- --

Institutional ownership data sourced from SEC EDGAR Form 13F-HR filings.

Is It Too Late to Buy Amentum Holdings Inc (AMTM) Based on Hedge Fund 13F Filings?

Signal Freshness measures how much AMTM has moved relative to its sector benchmark (XLI) since the 2026 Q2 13F filing. A stock that has barely outrun its sector is still a relatively fresh entry point — the fund's thesis has not yet been priced in by the broader market.

Since Quarter End June 30, 2026 · 47d ago
AMTM
+3.9%
XLI
+0.7%

AMTM outperformed XLI by +3.2% since June 30, 2026.

Since 13F Filing Date August 14, 2026 · 2d ago
AMTM
+0.0%
XLI
+0.0%

Since the filing became public, AMTM outperformed XLI by +0.0% .

Interpretation: The stock is tracking its sector benchmark closely. The signal remains fresh and the entry point is still near the fund's implied reference. Learn more →

Smart Money Signal ?
Limited Smart Money Interest

No strong consensus or elite conviction detected among institutional holders.

36 top-rated funds 9 high-conviction
Consensus
6.8
/ 10
breadth
×
Elite
5.2
/ 10
conviction
Hedge Fund Positioning: AMTM
2026 Q2 Stats Unlock in 3 days 480 + Investors

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

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

Statistics: AMTM

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Valuation Measures Data as of: --

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PEG Ratio (5yr expected) --
Price/Sales (ttm) --
Price/Book (mrq) --
Enterprise Value/Revenue --
Enterprise Value/EBITDA --
Beta (5Y Monthly) --
Short Ratio (Days to Cover) --
Short % of Float --

Financial Highlights

Profitability
Profit Margin --
Return on Assets (ttm) --
Return on Equity (ttm) --
Income Statement & Cash Flow
Revenue (ttm) --
Net Income Avi to Common (ttm) --
Diluted EPS (ttm) --
Total Cash (mrq) --
Total Debt/Equity (mrq) --
Levered Free Cash Flow (ttm) --

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.
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 Troluce Capital Advisors LLC 7.59% 3,565,399 $73.7M
3 Grizzlyrock Capital, LLC 4.60% 318,363 $6.6M
4 AWH Capital, L.P. 3.41% 235,250 $4.9M
5 Permian Investment Partners, LP 3.25% 1,433,028 $29.6M
6 Avenir Corp 2.04% 811,726 $16.8M
7 Soviero Asset Management, LP 1.56% 180,000 $3.7M
8 Soviero Asset Management, LP 1.30% 150,000 $3.1M
9 Hudson Value Partners, LLC 1.30% 250,185 $5.2M
10 Arvin Capital Management LP 1.21% 450,000 $9.3M
11 Arvin Capital Management LP 1.12% 416,705 $8.6M
12 683 Capital Management, LLC 1.12% 1,100,000 $22.7M
13 Ridge Creek Global, Inc 1.10% 68,418 $1.4M
14 Cacti Asset Management LLC 0.91% 881,692 $18.2M
15 Feynman Point Asset Management LLC 0.91% 24,075 $498K
16 De Lisle Partners LLP 0.85% 374,818 $7.7M
17 Segra Capital Management, LLC 0.83% 200,000 $4.1M
18 Cascade Investment Advisors, Inc. 0.82% 72,340 $1.5M
19 Frontier Capital Management Co LLC 0.80% 4,143,971 $85.7M
20 Verbena Value LP 0.64% 186,200 $3.8M
21 Hahn Capital Management LLC 0.62% 49,705 $1.0M
22 Shapiro Capital Management LLC 0.60% 475,970 $9.8M
23 Rovida Investment Management Ltd 0.44% 315,000 $6.5M
24 Aristotle Capital Boston, LLC 0.43% 307,836 $6.4M
25 Dba Trading, LLC 0.41% 31,196 $814K
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: 53 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.

Is it too late to buy Amentum Holdings Inc (AMTM) following the 2026 Q2 hedge fund 13F filings?

As of today, AMTM has moved +0.0% since the 2026 Q2 13F filing date (August 14, 2026), compared to +0.0% for the XLI sector ETF — an outperformance of +0.0%. Since the quarter end (June 30, 2026), AMTM has gained +3.9% vs +0.7% for XLI. The stock is tracking its sector benchmark closely. The signal remains fresh and the entry point is still near the fund's implied reference.

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.

Disclaimer: The information on this page is for informational purposes only and does not constitute investment advice, a recommendation, or an offer to buy or sell any security. Institutional holdings data is sourced from SEC Form 13F filings and reflects positions as of the filing date. Past performance of any fund or portfolio is not indicative of future results. 13Foresight is not a registered investment adviser. Always conduct your own due diligence before making investment decisions.

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