Mariner
ACM icon

Mariner’s Aecom ACM Stock Holding History

Mariner’s Portfolio ACM Stock Details ACM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$6.5M Sell
93,151
-112,519
-55% -$8.61M 0.01% 924
2026
Q1 		$17.4M Sell
205,670
-1,016,145
-83% -$96.3M 0.02% 516
2025
Q4 		$116M Buy
1,221,815
+30,794
+3% +$3.62M 0.14% 134
2025
Q3 		$155M Buy
1,191,021
+38,699
+3% +$4.67M 0.2% 96
2025
Q2 		$130M Buy
1,152,322
+28,798
+3% +$2.99M 0.19% 104
2025
Q1 		$104M Buy
1,123,524
+39,616
+4% +$4.02M 0.17% 114
2024
Q4 		$116M Buy
1,083,908
+40,228
+4% +$4.39M 0.19% 95
2024
Q3 		$108M Buy
1,043,680
+23,242
+2% +$2.18M 0.19% 102
2024
Q2 		$89.9M Buy
1,020,438
+77,671
+8% +$7.08M 0.17% 109
2024
Q1 		$92.5M Buy
942,767
+127,971
+16% +$11.6M 0.19% 108
2023
Q4 		$75.3M Buy
814,796
+76,735
+10% +$6.51M 0.18% 111
2023
Q3 		$61.3M Buy
738,061
+57,865
+9% +$4.99M 0.16% 124
2023
Q2 		$57.6M Buy
680,196
+22,982
+3% +$1.88M 0.15% 132
2023
Q1 		$55.4M Sell
657,214
-52,685
-7% -$4.54M 0.16% 131
2022
Q4 		$60.3M Buy
709,899
+21,234
+3% +$1.67M 0.19% 112
2022
Q3 		$47.1M Buy
688,665
+49,778
+8% +$3.53M 0.19% 126
2022
Q2 		$41.7M Buy
638,887
+48,942
+8% +$3.42M 0.17% 136
2022
Q1 		$45.3M Buy
589,945
+32,227
+6% +$2.37M 0.17% 133
2021
Q4 		$43.1M Buy
557,718
+53,005
+11% +$3.72M 0.18% 129
2021
Q3 		$31.9M Buy
504,713
+49,254
+11% +$3.14M 0.17% 148
2021
Q2 		$28.8M Buy
455,459
+66,134
+17% +$4.32M 0.18% 145
2021
Q1 		$25M Buy
389,325
+71,289
+22% +$4.06M 0.17% 148
2020
Q4 		$15.8M Buy
+318,036
New +$15.2M 0.12% 173
2017
Q2 		– Sell
-6,121
Closed -$218K – 502
2017
Q1 		$218K Buy
6,121
+358
+6% +$13.1K 0.01% 526
2016
Q4 		$210K Buy
+5,763
New +$191K 0.01% 511
2013
Q3 		– Sell
-7,673
Closed -$244K – 297
2013
Q2 		$244K Buy
+7,673
New +$232K 0.05% 228

Other funds holding ACM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $33B AUM 40.62% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
UBS AM
UBS AM Chicago, Illinois $550B AUM 43.33% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Mariner's ACM Position: Q2 2026 in Review

Mariner reduced its Aecom (ACM) stake by 55% in Q2 2026, selling an estimated $8.61M and leaving 93,151 shares worth $6.5M. The position accounts for 0.01% of the portfolio, ranked #924.

Mariner first reported a position in ACM in Q2 2013 and has held it in 26 quarters since. The position peaked at $155M in Q3 2025. 574 funds tracked by Wall St. Rank hold ACM as of Q2 2026.

  • Mariner held 93,151 shares of Aecom worth $6.5M as of Q2 2026.
  • Mariner sold 112,519 Aecom shares in Q2 2026, an estimated $8.61M.
  • Aecom made up 0.01% of Mariner's portfolio in Q2 2026, its #924 holding.
  • Mariner first reported a position in Aecom in Q2 2013 and has held it in 26 quarters since.
  • Mariner's Aecom position peaked at $155M in Q3 2025.
  • 574 funds tracked by Wall St. Rank held Aecom as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.