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AMTM · Amentum Holdings, Inc. · Held by Funds

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$21.76 +0.47 (+2.21%) At close · Oct 23
S&P 600 member Russell 1000 member Rebalance outlook locked
Market Cap
$5.32B
Shares
244.51M
Volume · Oct 23 2.08M Avg daily vol (3M) 2.02M

Registered funds — mutual funds, ETFs and closed-end funds — whose latest Form N-PORT portfolio report holds this exact listed security, matched by CUSIP. Each row is one fund position with its size, value and weight in that fund.

Fund Ownership of AMTM by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 16.06% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 2.29% 5,608,540
Index ETFs 13.77% 33,659,247
Active ETFs 1.10% 2,681,170
Active funds 12.62% 30,861,250
Unclassified 0.07% 180,897
All registered funds 29.85% 72,991,104
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Funds holding AMTM

320 fund positions
Fund Balance Value % of Fund Open
iShares Core S&P Small-Cap ETF 9,273,929 $191,692,112 0.17%
VANGUARD PRIMECAP CORE FUND 5,516,796 $114,032,173 0.63%
VANGUARD TOTAL STOCK MARKET INDEX FUND 4,653,337 $96,184,476 0.00%
Invesco Small Cap Value Fund 4,226,948 $93,838,246 0.84%
VANGUARD SMALL-CAP INDEX FUND 3,363,425 $69,521,995 0.04%
Invesco Value Opportunities Fund 2,945,078 $65,380,732 0.72%
Fidelity Value Fund 2,662,800 $59,114,160 0.56%
VANGUARD CAPITAL OPPORTUNITY FUND 2,506,552 $51,810,430 0.16%
VANGUARD SMALL-CAP VALUE INDEX FUND 2,129,618 $44,019,204 0.06%
PRIMECAP Odyssey Stock Fund 1,879,566 $41,726,365 0.91%
VANGUARD EXTENDED MARKET INDEX FUND 1,765,443 $36,491,707 0.04%
State Street(R) SPDR(R) Portfolio S&P 600(TM) Small Cap ETF 1,416,757 $29,284,367 0.17%
Invesco S&P SmallCap Momentum ETF 1,249,733 $27,744,073 0.91%
iShares S&P Small-Cap 600 Value ETF 1,325,120 $27,390,230 0.34%
U.S. Targeted Value Portfolio 1,120,249 $24,869,528 0.15%
Dimensional U.S. Targeted Value ETF 1,080,243 $23,981,395 0.17%
Invesco Aerospace & Defense ETF 1,045,746 $23,215,561 0.28%
Fidelity Stock Selector Small Cap Fund 941,533 $20,902,033 0.28%
VANGUARD TAX-MANAGED SMALL-CAP FUND 996,603 $20,599,784 0.18%
Fidelity Extended Market Index Fund 797,188 $18,518,677 0.04%
Dimensional US Small Cap Value ETF 800,538 $17,771,944 0.22%
Schwab U.S. Small-Cap ETF 738,806 $17,162,463 0.08%
PRIMECAP Odyssey Aggressive Growth Fund 768,234 $17,054,795 0.23%
State Street(R) SPDR(R) S & P 600(TM) Small Cap Value ETF 800,807 $16,552,681 0.34%
THRIVENT LARGE CAP VALUE FUND 642,939 $14,273,246 0.38%
U.S. SMALL CAP VALUE PORTFOLIO 639,128 $14,188,642 0.07%
THRIVENT LARGE CAP VALUE PORTFOLIO 661,340 $13,669,898 0.36%
Invesco S&P SmallCap 600 Revenue ETF 565,116 $13,127,645 0.70%
PRIMECAP Odyssey Growth Fund 583,572 $12,955,298 0.21%
iShares Russell Mid-Cap ETF 626,321 $12,946,055 0.02%
Fidelity Mid Cap Index Fund 577,886 $12,829,069 0.02%
VANGUARD S&P SMALL-CAP 600 INDEX FUND 531,449 $12,345,560 0.21%
Transamerica Mid Cap Value Opportunities 537,016 $11,921,755 1.54%
Fidelity Advisor Value Strategies Fund 481,300 $11,180,599 0.51%
Fidelity Series Small Cap Opportunities Fund 470,745 $10,450,539 0.22%
Bridge Builder Large Cap Growth Fund 487,243 $10,071,313 0.03%
Schwab U.S. Mid-Cap ETF 416,858 $9,683,611 0.07%
Dimensional U.S. Core Equity 2 ETF 389,934 $8,656,535 0.02%
VANGUARD S&P SMALL-CAP 600 VALUE INDEX FUND 337,304 $7,835,572 0.42%
Dimensional U.S. Small Cap ETF 341,404 $7,579,169 0.05%
Schwab Fundamental U.S. Small Company ETF 316,271 $7,346,975 0.08%
First Trust Industrials/Producer Durables AlphaDEX Fund 321,634 $7,140,275 0.96%
iShares Russell 1000 Value ETF 341,317 $7,055,022 0.01%
Royce Small-Cap Opportunity Fund 328,621 $6,792,596 0.48%
Fidelity Total Market Index Fund 291,022 $6,760,441 0.00%
Transamerica Small/Mid Cap Value 280,580 $6,228,876 0.96%
VANGUARD EXPLORER VALUE FUND 257,190 $5,974,524 0.48%
Bridge Builder Large Cap Value Fund 280,945 $5,807,133 0.02%
VIP Value Strategies Portfolio 280,400 $5,795,868 0.48%
Fidelity Series Total Market Index Fund 235,476 $5,470,107 0.00%
Showing 1–50 of 320 positions
Key facts CIK 2011286 CUSIP 023939101 13F (30d) 83 filings 83 filers Visit website Investor relations