Amentum Holdings, Inc. (AMTM) — Institutional Holders, Q2 2026 (page 2)
466 institutional investment managers reported a AMTM position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $4.3B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 101 to 200. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
AMTM 13F holders ranked 101–200 of 466
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 101 | Vanguard Global Advisers#101 · 137,394 sh | 137,394 | $2.8M | <0.01% | +123.8% |
| 102 | VANGUARD ASSET MANAGEMENT, Ltd#102 · 127,793 sh | 127,793 | $2.6M | <0.01% | 0.0% |
| 103 | BESSEMER GROUP#103 · 126,107 sh | 126,107 | $2.6M | <0.01% | +0.1% |
| 104 | JPMORGAN CHASE#104 · 119,174 sh | 119,174 | $2.6M | <0.01% | +40.6% |
| 105 | South Dakota Investment Council#105 · 121,837 sh | 121,837 | $2.5M | 0.04% | -1.0% |
| 106 | SOROS FUND MANAGEMENT#106 · 118,276 sh | 118,276 | $2.4M | 0.03% | +9.9% |
| 107 | STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM#107 · 117,135 sh | 117,135 | $2.4M | <0.01% | -3.1% |
| 108 | ALGERT GLOBAL#108 · 102,220 sh | 102,220 | $2.1M | 0.03% | +1.2% |
| 109 | ALLIANCEBERNSTEIN L.P.#109 · 79,944 sh | 79,944 | $2.1M | <0.01% | +8.3% |
| 110 | TWINBEECH CAPITAL#110 · 99,727 sh | 99,727 | $2.1M | 0.37% | New |
| 111 | Strategic Global Advisors#111 · 99,103 sh | 99,103 | $2.0M | 0.29% | +3.5% |
| 112 | Quantinno Capital Management#112 · 99,067 sh | 99,067 | $2.0M | <0.01% | -31.9% |
| 113 | STATE OF WISCONSIN INVESTMENT BOARD#113 · 98,425 sh | 98,425 | $2.0M | <0.01% | -3.5% |
| 114 | GAMCO INVESTORS, ET AL#114 · 97,120 sh | 97,120 | $2.0M | 0.02% | +1.9% |
| 115 | LPL Financial#115 · 96,430 sh | 96,430 | $2.0M | <0.01% | +8.6% |
| 116 | ROYAL BANK OF CANADA#116 · 92,041 sh | 92,041 | $1.9M | <0.01% | -60.3% |
| 117 | Mraz, Amerine & Associates#117 · 90,200 sh | 90,200 | $1.9M | 0.27% | +25.3% |
| 118 | Pine Valley Investments Ltd Liability#118 · 89,488 sh | 89,488 | $1.8M | 0.07% | +12.9% |
| 119 | Holocene Advisors#119 · 89,037 sh | 89,037 | $1.8M | <0.01% | -27.7% |
| 120 | Illinois Municipal Retirement Fund#120 · 85,809 sh | 85,809 | $1.8M | 0.02% | +2.9% |
| 121 | BALYASNY ASSET MANAGEMENT L.P.#121 · 85,389 sh | 85,389 | $1.8M | <0.01% | +365.5% |
| 122 | WEALTH ENHANCEMENT ADVISORY SERVICES#122 · 76,516 sh | 76,516 | $1.6M | — | -3.3% |
| 123 | Dynamic Technology Lab Private Ltd#123 · 76,540 sh | 76,540 | $1.6M | 0.35% | +77.0% |
| 124 | GABELLI FUNDS#124 · 76,283 sh | 76,283 | $1.6M | 0.01% | +9.3% |
| 125 | OSAIC#125 · 76,280 sh | 76,280 | $1.6M | <0.01% | +181.9% |
| 126 | NEW YORK STATE COMMON RETIREMENT FUND#126 · 75,151 sh | 75,151 | $1.6M | <0.01% | -85.0% |
| 127 | BDF-GESTION#127 · 676 sh | 676 | $1.5M | — | -10.1% |
| 128 | Cascade Investment Advisors#128 · 72,340 sh | 72,340 | $1.5M | 0.82% | New |
| 129 | Police & Firemen's Retirement System of New Jersey#129 · 71,268 sh | 71,268 | $1.5M | 0.01% | +1.4% |
| 130 | Jupiter Topco#130 · 69,400 sh | 69,400 | $1.4M | <0.01% | — |
| 131 | Ridge Creek Global#131 · 68,418 sh | 68,418 | $1.4M | 1.10% | -3.0% |
| 132 | Louisiana State Employees Retirement System#132 · 67,500 sh | 67,500 | $1.4M | — | -1.0% |
| 133 | NATIXIS#133 · 67,073 sh | 67,073 | $1.4M | <0.01% | New |
| 134 | Treasurer of the State of North Carolina#134 · 64,959 sh | 64,959 | $1.3M | <0.01% | -4.7% |
| 135 | Caption Management#135 · 64,000 sh | 64,000 | $1.3M | <0.01% | +194.6% |
| 136 | State of New Jersey Common Pension Fund D#136 · 61,033 sh | 61,033 | $1.3M | <0.01% | -13.1% |
| 137 | Kerrisdale Advisers#137 · 59,845 sh | 59,845 | $1.2M | 0.31% | +105.0% |
| 138 | WINTON GROUP Ltd#138 · 58,393 sh | 58,393 | $1.2M | 0.04% | +5.2% |
| 139 | FOX RUN MANAGEMENT, L.L.C.#139 · 56,706 sh | 56,706 | $1.2M | 0.19% | +67.1% |
| 140 | DELPHI MANAGEMENT#140 · 55,469 sh | 55,469 | $1.1M | 1.12% | +46.5% |
| 141 | Creative Planning#141 · 54,404 sh | 54,404 | $1.1M | <0.01% | -16.0% |
| 142 | MANUFACTURERS LIFE INSURANCE COMPANY, THE#142 · 273,618 sh | 273,618 | $1.1M | <0.01% | +568.7% |
| 143 | Advisors Asset Management#143 · 53,517 sh | 53,517 | $1.1M | 0.02% | +7.0% |
| 144 | State of Tennessee, Treasury Department#144 · 53,132 sh | 53,132 | $1.1M | <0.01% | +14.9% |
| 145 | Crestwood Advisors Group#145 · 53,002 sh | 53,002 | $1.1M | 0.02% | -6.7% |
| 146 | XTX Topco Ltd#146 · 52,938 sh | 52,938 | $1.1M | 0.01% | +122.6% |
| 147 | WOLVERINE ASSET MANAGEMENT#147 · 51,942 sh | 51,942 | $1.1M | <0.01% | 0.0% |
| 148 | VICTORY CAPITAL MANAGEMENT#148 · 50,740 sh | 50,740 | $1.0M | <0.01% | +1.8% |
| 149 | State of Alaska, Department of Revenue#149 · 50,689 sh | 50,689 | $1.0M | — | -33.2% |
| 150 | HAHN CAPITAL MANAGEMENT#150 · 49,705 sh | 49,705 | $1.0M | 0.62% | -2.8% |
| 151 | ENVESTNET ASSET MANAGEMENT#151 · 49,420 sh | 49,420 | $1.0M | <0.01% | -19.8% |
| 152 | INTECH INVESTMENT MANAGEMENT#152 · 48,767 sh | 48,767 | $1.0M | <0.01% | New |
| 153 | NATIXIS ADVISORS#153 · 48,328 sh | 48,328 | $998.0K | <0.01% | -11.2% |
| 154 | WEXFORD CAPITAL#154 · 47,870 sh | 47,870 | $989.5K | 0.13% | +34.9% |
| 155 | Bridgewater Associates#155 · 47,223 sh | 47,223 | $976.1K | <0.01% | +176.9% |
| 156 | PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO#156 · 45,464 sh | 45,464 | $939.7K | <0.01% | -5.0% |
| 157 | Hikari Tsushin#157 · 45,403 sh | 45,403 | $938.5K | 0.06% | 0.0% |
| 158 | AMALGAMATED BANK#158 · 44,063 sh | 44,063 | $911.0K | — | -24.5% |
| 159 | Arizona State Retirement System#159 · 43,751 sh | 43,751 | $904.3K | <0.01% | +0.5% |
| 160 | First National Advisers#160 · 43,079 sh | 43,079 | $890.4K | 0.13% | +238.1% |
| 161 | Cerity Partners#161 · 42,875 sh | 42,875 | $886.2K | <0.01% | +1.0% |
| 162 | Paragon Capital Management#162 · 42,651 sh | 42,651 | $881.6K | 0.41% | -1.2% |
| 163 | Entropy Technologies#163 · 42,286 sh | 42,286 | $874.1K | 0.03% | +57.2% |
| 164 | Zurcher Kantonalbank (Zurich Cantonalbank)#164 · 40,963 sh | 40,963 | $846.7K | <0.01% | 0.0% |
| 165 | JONES FINANCIAL COMPANIES LLLP#165 · 41,502 sh | 41,502 | $840.4K | <0.01% | +10.2% |
| 166 | Lido Advisors#166 · 40,309 sh | 40,309 | $833.2K | <0.01% | -19.9% |
| 167 | Vanguard Investments Australia, Ltd.#167 · 39,488 sh | 39,488 | $816.2K | <0.01% | 0.0% |
| 168 | HARBOR CAPITAL ADVISORS#168 · 39,501 sh | 39,501 | $816.0K | — | New |
| 169 | DBA TRADING#169 · 31,196 sh | 31,196 | $813.6K | 0.41% | 0.0% |
| 170 | VIRGINIA RETIREMENT SYSTEMS ET Al#170 · 38,800 sh | 38,800 | $802.0K | <0.01% | +100.0% |
| 171 | TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY#171 · 37,772 sh | 37,772 | $781.0K | <0.01% | 0.0% |
| 172 | YOUSIF CAPITAL MANAGEMENT#172 · 37,746 sh | 37,746 | $780.2K | — | -0.3% |
| 173 | COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS#173 · 36,500 sh | 36,500 | $754.5K | <0.01% | -4.0% |
| 174 | AXQ CAPITAL#174 · 35,915 sh | 35,915 | $742.4K | 0.08% | New |
| 175 | Wilmington Savings Fund Society, FSB#175 · 35,425 sh | 35,425 | $732.2K | — | +21.6% |
| 176 | OREGON PUBLIC EMPLOYEES RETIREMENT FUND#176 · 35,000 sh | 35,000 | $723.5K | <0.01% | -0.3% |
| 177 | NISA INVESTMENT ADVISORS#177 · 34,922 sh | 34,922 | $721.8K | — | -3.6% |
| 178 | Universal- Beteiligungs- und Servicegesellschaft mbH#178 · 33,813 sh | 33,813 | $698.9K | <0.01% | -2.4% |
| 179 | CAPTRUST FINANCIAL ADVISORS#179 · 33,730 sh | 33,730 | $697.2K | <0.01% | +5.6% |
| 180 | TOWER BRIDGE ADVISORS#180 · 33,261 sh | 33,261 | $687.5K | 0.06% | -6.8% |
| 181 | Lebenthal Global Advisors#181 · 33,000 sh | 33,000 | $682.1K | 0.09% | New |
| 182 | Old West Investment Management#182 · 32,875 sh | 32,875 | $679.5K | 0.07% | +51.0% |
| 183 | Neuberger Berman Group#183 · 32,120 sh | 32,120 | $663.9K | <0.01% | +56.3% |
| 184 | Clear Harbor Asset Management#184 · 31,780 sh | 31,780 | $656.9K | 0.04% | -5.9% |
| 185 | CITIGROUP#185 · 31,486 sh | 31,486 | $650.8K | <0.01% | -22.6% |
| 186 | MARCO INVESTMENT MANAGEMENT#186 · 31,391 sh | 31,391 | $648.9K | 0.04% | New |
| 187 | Williams Jones Wealth Management#187 · 31,209 sh | 31,209 | $645.1K | <0.01% | -4.0% |
| 188 | DOVER ADVISORS#188 · 22,219 sh | 22,219 | $644.4K | 0.26% | +5.0% |
| 189 | Blackstone#189 · 31,027 sh | 31,027 | $641.3K | <0.01% | New |
| 190 | Steadtrust#190 · 30,400 sh | 30,400 | $628.4K | 0.32% | -33.0% |
| 191 | Maryland State Retirement & Pension System#191 · 29,838 sh | 29,838 | $616.8K | 0.01% | 0.0% |
| 192 | Legal Advantage Investments#192 · 28,900 sh | 28,900 | $597.4K | — | 0.0% |
| 193 | GROUP ONE TRADING, L.P.#193 · 27,710 sh | 27,710 | $572.8K | <0.01% | New |
| 194 | Corient Private Wealth#194 · 27,543 sh | 27,543 | $569.3K | <0.01% | -6.7% |
| 195 | Jain Global#195 · 27,519 sh | 27,519 | $568.8K | <0.01% | New |
| 196 | BLAIR WILLIAM#196 · 27,278 sh | 27,278 | $563.8K | <0.01% | -44.7% |
| 197 | Pictet Asset Management Holding SA#197 · 26,893 sh | 26,893 | $555.9K | <0.01% | 0.0% |
| 198 | National Philanthropic#198 · 26,844 sh | 26,844 | $554.9K | <0.01% | -0.8% |
| 199 | Ameritas Advisory Services#199 · 26,747 sh | 26,747 | $552.9K | 0.01% | New |
| 200 | SIT INVESTMENT ASSOCIATES#200 · 26,202 sh | 26,202 | $542.0K | 0.01% | 0.0% |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.