13FBOX
Amentum Holdings Inc. Ordinary Shares · 13F Institutional Holdings
Options Calculator Rankings
A

Amentum Holdings Inc. Ordinary Shares

AMTM
Institutions
466
Combined AUM (Q2 2026)
$4.60B
Combined Shares (Q2 2026)
222.0M
Overall Trend
Increase
All institutions combined
📥 Inflow (Q1 2026→Q2 2026)
+24.9M
202 · 59 New Buys · ≈
📤 Outflow (Q1 2026→Q2 2026)
-20.3M
248 · 85 Exit · ≈
⚖️ Net
+4.6M
Net Buy
💰 Net Value
≈ —
est. price
Latest AUM (Q2 2026)
$4.60B
Institutions
466
New Buys
59
Adds
143
Reduces
163
Exits
85
Unchanged
101
Ownership TrendPortfolio %Prev Q %RankQ2 2026 ValueQ2 2026 SharesPrev Q ValuePrev Q SharesShares ChangeAction
AMERICAN SECURITIES LLC
24.79%29.88%#1$930.7M45.0M$1.17B45.0M00.00%Unchanged
Invesco Ltd.
0.04%0.08%#85$515.8M25.0M$560.0M21.5M+3.5M+16.21%Add
BlackRock, Inc.
0.01%0.01%#168$370.1M17.9M$465.3M17.8M+65,701+0.37%Add
PRIMECAP MANAGEMENT CO/CA/
0.15%0.25%#48$253.9M12.3M$315.2M12.1M+200,210+1.66%Add
Legacy Advisors, LLC
15.21%1.07%#2$190.4M9.1M$9.1M9.1M+1,399+0.02%Add
VANGUARD PORTFOLIO MANAGEMENT LLC
0.01%0.01%#153$164.3M7.9M$204.8M7.9M+95,434+1.22%Add
VANGUARD CAPITAL MANAGEMENT LLC
<0.01%<0.01%#215$138.7M6.7M$173.5M6.7M+61,108+0.92%Add
FMR LLC
0.01%0.01%#172$117.4M5.7M$145.5M5.6M+100,789+1.81%Add
DIMENSIONAL FUND ADVISORS LP
0.02%0.02%#113$114.5M5.5M$98.8M3.8M+1.8M+46.21%Add
STATE STREET CORP
<0.01%<0.01%#209$106.5M5.2M$132.5M5.1M+72,731+1.43%Add
FRONTIER CAPITAL MANAGEMENT CO LLC
0.8%1.32%#20$85.7M4.1M$128.6M4.9M-786,239-15.95%Reduce
Troluce Capital Advisors LLC
7.59%1.6%#4$73.7M3.6M$26.1M1.0M+2.6M+256.54%Add
GEODE CAPITAL MANAGEMENT, LLC
<0.01%<0.01%#213$56.2M2.7M$73.4M2.8M-97,855-3.48%Reduce
GOLDMAN SACHS GROUP INC
<0.01%<0.01%#174$56.1M2.7M$29.5M1.1M+1.6M+139.68%Add
MORGAN STANLEY
<0.01%<0.01%#217$55.0M2.7M$43.3M1.8M+855,912+47.38%Add
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
0.06%0.1%#72$47.9M2.3M$72.6M2.8M-466,553-16.75%Reduce
THOMPSON SIEGEL & WALMSLEY LLC
0.85%0.7%#17$47.2M2.3M$39.8M1.5M+756,061+49.55%Add
SEGRA CAPITAL MANAGEMENT, LLC
9.33%19.06%#3$46.3M2.2M$47.3M1.8M+425,164+23.45%Add
MILLENNIUM MANAGEMENT LLC
0.01%0.01%#125$44.0M2.1M$16.5M631,055+1.5M+237.18%Add
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
0.01%0.01%#164$43.8M2.1M$53.9M2.1M+52,172+2.52%Add
THRIVENT FINANCIAL FOR LUTHERANS
0.07%0.1%#67$43.5M2.1M$54.8M2.1M+5,345+0.25%Add
BANK OF AMERICA CORP /DE/
<0.01%<0.01%#221$42.2M2.0M$62.7M2.4M-362,144-15.06%Reduce
Verition Fund Management LLC
0.06%0.11%#73$41.7M2.0M$33.9M1.3M+721,388+55.58%Add
VAN ECK ASSOCIATES CORP
0.03%0.01%#107$41.1M2.0M$14.3M547,644+1.4M+263.17%Add
VOYA INVESTMENT MANAGEMENT LLC
0.04%0.03%#93$40.8M2.0M$31.3M1.2M+774,700+64.59%Add
UBS Group AG
<0.01%0.01%#190$31.9M1.5M$44.6M1.7M-165,592-9.68%Reduce
NORGES BANK
<0.01%<0.01%#211$31.3M1.5M$31.2M1.7M-200,313-11.67%Reduce
Permian Investment Partners, LP
3.25%4.52%#7$29.6M1.4M$40.9M1.6M-133,972-8.55%Reduce
SUSQUEHANNA INTERNATIONAL GROUP, LLP
<0.01%<0.01%#235$26.0M1.3M$32.9M1.3M-4,697-0.37%Reduce
CACTI ASSET MANAGEMENT LLC
1.16%1.39%#12$23.0M881,692$23.0M881,69200.00%Unchanged
683 Capital Management, LLC
1.12%1.05%#14$22.7M1.1M$20.2M775,000+325,000+41.94%Add
LOOMIS SAYLES & CO L P
0.03%0.04%#103$21.5M1.0M$28.2M1.1M-38,814-3.59%Reduce
Qube Research & Technologies Ltd
0.02%<0.01%#115$21.4M1.0M$2.0M77,369+957,026+1,236.96%Add
NORTHERN TRUST CORP
<0.01%<0.01%#224$21.3M1.0M$25.7M984,105+45,787+4.65%Add
CITADEL ADVISORS LLC
<0.01%<0.01%#228$20.1M974,284$13.2M506,838+467,446+92.23%Add
VANGUARD FIDUCIARY TRUST CO
<0.01%0.01%#183$20.0M968,451$24.7M947,460+20,991+2.22%Add
Bank of New York Mellon Corp
<0.01%<0.01%#214$18.2M878,084$23.7M908,599-30,515-3.36%Reduce
Arvin Capital Management LP
2.34%8.97%#9$17.9M866,705$73.5M2.8M-2.0M-69.24%Reduce
Russell Investments Group, Ltd.
0.01%0.02%#129$17.4M840,642$18.6M713,828+126,814+17.77%Add
AVENIR CORP
2.04%2.67%#10$16.8M811,726$21.9M841,099-29,373-3.49%Reduce
WELLS FARGO & COMPANY/MN
<0.01%<0.01%#223$15.5M750,214$16.6M636,674+113,540+17.83%Add
PRINCIPAL FINANCIAL GROUP INC
0.01%0.01%#151$15.3M742,381$19.4M744,728-2,347-0.32%Reduce
Ancora Advisors LLC
0.29%0.64%#38$14.8M715,652$18.3M703,119+12,533+1.78%Add
ROYCE & ASSOCIATES LP
0.12%0.14%#52$14.4M697,368$14.3M549,778+147,590+26.85%Add
HRT FINANCIAL LP
0.03%#105$13.9M671,847$00+671,847New Buy
Point72 Asset Management, L.P.
0.01%0.05%#126$13.4M649,984$42.5M1.6M-980,579-60.14%Reduce
Caption Management, LLC
0.06%0.22%#71$12.7M614,000$37.4M1.4M-818,822-57.15%Reduce
AQR CAPITAL MANAGEMENT LLC
<0.01%0.01%#184$12.4M601,900$13.2M507,843+94,057+18.52%Add
FIRST TRUST ADVISORS LP
0.01%<0.01%#157$11.3M547,907$5.9M228,083+319,824+140.22%Add
Ruane, Cunniff & Goldfarb L.P.
0.17%0.7%#45$11.1M537,213$42.3M1.6M-1.1M-66.90%Reduce

🧭 Institutional Sector Flow Heatmap

Net Outflow Net Inflow