AMTM — Amentum Holdings, Inc.Today's name, from the SEC's present-day ticker list — a present-day mapping, not the name as of each filing.

Congress trades
5
all time
Members · 12m
0
0 buys · 0 sells · by trade date
Latest filing
11-06
2024-11-06
Rows filed past the STOCK Act's 45-day window, stated on the row, never editorialised; both dates and the receipt stay on every row.
0
every row filed inside 45 days
13F holders
404
all listed · 2026-03-31
Congress: statutory ranges, filed up to 45 days after the trade · 13F: quarter-end snapshots, filed up to 45 days lateras of 2026-10-29
Congress 5Institutional 404

Congress · disclosure timeline

By trade date · 24 months · 1 row ▲ buy, ▼ sell; height = lower bound (log scale). Trade date, not filing date — the filing lag is in the table below.

1 dated disclosure in the window, placed by trade date; magnitudes are the disclosed lower bounds, against gridlines at $15K, $250K, $5M.

Members active in AMTM

12 months · most active first Rows = number of disclosures, not dollars. Net = lower bound of the net range. Committees as of each member's latest trade in the window (roster snapshot 2026-10-29).

No member disclosed AMTM in the trailing 12 months.

Congressional disclosures

Newest filed firstAll 5 rows ↗
Latest congressional filings mentioning AMTM
FiledMemberSide · OwnerTraded · LagAmountRange · FlagsSrc
2024-11-06William R. Keating D–MA-9SELLTraded 10-31 +6d$1K–$15K
2024-10-15Thomas H. Kean, Jr. R–NJ-7EXCHANGETraded 09-30 +15d$1K–$15K
2024-10-15Thomas H. Kean, Jr. R–NJ-7EXCHANGETraded 09-30 +15d$1K–$15K
2024-10-15Thomas H. Kean, Jr. R–NJ-7EXCHANGETraded 09-30 +15d$1K–$15K
2024-10-15Thomas H. Kean, Jr. R–NJ-7EXCHANGETraded 09-30 +15d$1K–$15K

13F holders · Quarter ended 2026-03-31Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt. · longs only

Top institutional holders of AMTM for quarter 2026-03-31, 1–25 of 404 holders
#FilerValueSecuritiesFlagsderived by Public Filings from this build's reviewed ticker-mapping holders list for this share class; that list carries each holder's share count, share change and filed date, which this table does not show, but no document links — the EDGAR link opens the filer's 13F list·§
1Invesco Ltd.$560M1
derived ·§ EDGAR ↗
2BlackRock, Inc.$465M1
derived ·§ EDGAR ↗
3PRIMECAP MANAGEMENT CO/CA/$315M1
derived ·§ EDGAR ↗
4VANGUARD PORTFOLIO MANAGEMENT LLC$205M1
derived ·§ EDGAR ↗
5VANGUARD CAPITAL MANAGEMENT LLC$173M1
derived ·§ EDGAR ↗
6FMR LLC$145M1
derived ·§ EDGAR ↗
7STATE STREET CORP$132M1
derived ·§ EDGAR ↗
8FRONTIER CAPITAL MANAGEMENT CO LLC$129M1
derived ·§ EDGAR ↗
9DIMENSIONAL FUND ADVISORS LP$98.8M1
derived ·§ EDGAR ↗
10GEODE CAPITAL MANAGEMENT, LLC$73.4M1
derived ·§ EDGAR ↗
11MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.$72.6M1
derived ·§ EDGAR ↗
12Focus Partners Wealth$67.9M1
derived ·§ EDGAR ↗
13BANK OF AMERICA CORP /DE/$62.7M1
derived ·§ EDGAR ↗
14MORGAN STANLEY$58.3M1
derived ·§ EDGAR ↗
15Arvin Capital Management LP$54.0M1
derived ·§ EDGAR ↗
16CHARLES SCHWAB INVESTMENT MANAGEMENT INC$53.9M1
derived ·§ EDGAR ↗
17UBS Group AG$44.6M1
derived ·§ EDGAR ↗
18Point72 Asset Management, L.P.$42.5M1
derived ·§ EDGAR ↗
19Ruane, Cunniff & Goldfarb L.P.$42.3M1
derived ·§ EDGAR ↗
20SEGRA CAPITAL MANAGEMENT, LLC$42.1M1
derived ·§ EDGAR ↗
21Permian Investment Partners, LP$40.9M1
derived ·§ EDGAR ↗
22BRIGHTLINE CAPITAL MANAGEMENT, LLC$36.4M1
derived ·§ EDGAR ↗
23Verition Fund Management LLC$33.9M1
derived ·§ EDGAR ↗
24VOYA INVESTMENT MANAGEMENT LLC$31.3M1
derived ·§ EDGAR ↗
25Troluce Capital Advisors LLC$26.1M1
derived ·§ EDGAR ↗
Show all 404 holders
Truncated by Public Filings. All 350 13F filers reporting this share class are listed. Method ↗

Crowding — not available in this build. No holder rows for the selected period, so no percentile can be ranked.

Congress ↔ notable managers · AMTM

Congress · last 90 days

Buyers
0 — —
Sellers
0 — —

filed 2026-07-31 → 2026-10-29 · statutory ranges

Notable managers · quarter ended 2026-03-31

Adding
1 Moore Capital Management $22.8M held

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · AMENTUM HOLDINGS INC

Merged timeline of congressional filings and notable-manager moves on AMTM
DateWhoChangeSize
2026-05-15Moore Capital Management 13FADD+398,296 sh
2026-05-15Ruane Cunniff & Goldfarb 13FTRIM−771,147 sh
2026-05-15Gotham Asset Management 13FTRIM−114,389 sh
2026-05-15Soros Fund Management 13FTRIM−1,697 sh
2026-05-15Bridgewater Associates 13FTRIM−1,199 sh

5 newest, by filing date · 13F rows are quarter-end snapshots, not trades

Congress vs filers

12 months
Congress net (rows)no rows
Congress net ($ bound)$0
Filersnot computedThe filer side needs per-issuer quarter-over-quarter actions, which the published aggregate does not carry for this issuer. Convergence and divergence are stated only when both sides are computed.