Follow-The-Filings

Security

AMTM

Amentum Holdings Inc. · COM

Equity holders as of 2026 Q1 (each manager’s latest book)

16 owners 2 new 1 exit max 0.7% (Ruane, Cunniff & Goldfarb...)

grid → activity →
owners 16
max % 0.7%
tracked value $689M
qoq N 2 A 4 R 8 E 1

holders

sorted by % of portfolio · long equity only · exits show last held size

manager % port activity shares value history
Ruane, Cunniff & Goldfarb L.P. 2026 Q1 0.7% Reduce -0.38 pp 1,622,982 $42M hist
Ancora Advisors LLC 2026 Q1 0.4% Add +0.15 pp 703,119 $18M hist
Steve Cohen - Point72 Asset Management, L.P. 2026 Q1 0.1% Add +0.03 pp 1,630,563 $43M hist
Joel Greenblatt - Gotham Asset Management, LLC 2026 Q1 0.0% Reduce -0.03 pp 521,041 $14M hist
Two Sigma Investments, LP 2025 Q4 stale 0.0% Exit -0.03 pp 637,986 $19M hist
George Soros - Soros Fund Management LLC 2026 Q1 0.0% Reduce -0.01 pp 107,606 $3M hist
Vanguard Group Inc. 2025 Q4 stale 0.0% Reduce 0.00 pp 15,411,745 $447M hist
Norges Bank 2025 Q4 stale 0.0% Exit -0.01 pp 2,294,097 $67M hist
Israel Englander - Millennium Management LLC 2026 Q1 0.0% Add +0.01 pp 631,055 $16M hist
Cliff Asness - Aqr Capital Management LLC 2026 Q1 0.0% Reduce -0.02 pp 507,843 $13M hist
Lee Ainslie - Maverick Capital Ltd 2026 Q1 0.0% New 0.0% 46,335 $1M hist
Ken Griffin - Citadel Advisors LLC 2026 Q1 0.0% Add 0.00 pp 80,638 $2M hist
D. E. Shaw & Co., Inc. 2026 Q1 0.0% New 0.0% 66,171 $2M hist
Natixis Advisors, LLC 2026 Q1 0.0% Reduce 0.00 pp 54,406 $1M hist
Dmitry Balyasny - Balyasny Asset Management L.P. 2026 Q1 0.0% Reduce -0.01 pp 18,345 $478 hist
Ray Dalio - Bridgewater Associates, LP 2026 Q1 0.0% Reduce 0.00 pp 17,052 $445 hist
Marshall Wace - Marshall Wace, LLP exited 2026 Q1 last 2025 Q4 0.0% Exit 0.00 pp 35,084 $1M hist

16 current · 1 exited last period · options excluded

financials

US-GAAP annual · as tagged in Form 10-K · fiscal years · values link to the SEC filing

Income statement

Metric FY2024 FY2025
Revenue $8.39B $14.39B
Gross profit * — $1.51B
Gross margin * — 10.5%
Net income -$82M $66M
Net margin * -1.0% 0.5%

Balance sheet

Metric FY2024 FY2025
Total current assets $3.08B $3.11B
Total non-current assets * $8.89B $8.35B
Total assets $11.97B $11.46B
Total current liabilities $1.96B $2.35B
Total non-current liabilities * $5.46B $4.49B
Total equity $4.46B $4.5B

Cash flow

Metric FY2024 FY2025
Cash from operations $47M $543M
Cash from investing $475M $228M
Cash from financing -$382M -$790M
Net change in cash $147M -$15M

Source: SEC companyfacts (US-GAAP 10-K) · * = computed (not a single XBRL tag) · fiscal year as labeled by the issuer · not adjusted or audited by Follow-The-Filings

ownership over time

filing count by report period · click a bar for that quarter’s holders