Ken Griffin’s Aecom ACM Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $60.6M | Buy |
714,657
+199,914
| +39% | +$18.9M | 0.01% | 1180 |
|
|
2025
Q4 | $49.1M | Buy |
514,743
+430,049
| +508% | +$50.6M | 0.01% | 1433 |
|
|
2025
Q3 | $11.1M | Sell |
84,694
-56,911
| -40% | -$6.87M | ﹤0.01% | 3133 |
|
|
2025
Q2 | $16M | Buy |
141,605
+40,995
| +41% | +$4.26M | ﹤0.01% | 2418 |
|
|
2025
Q1 | $9.33M | Sell |
100,610
-25,161
| -20% | -$2.55M | ﹤0.01% | 2950 |
|
|
2024
Q4 | $13.4M | Buy |
125,771
+114,553
| +1,021% | +$12.5M | ﹤0.01% | 2606 |
|
|
2024
Q3 | $1.16M | Sell |
11,218
-9,275
| -45% | -$871K | ﹤0.01% | 6579 |
|
|
2024
Q2 | $1.81M | Sell |
20,493
-6,120
| -23% | -$558K | ﹤0.01% | 5516 |
|
|
2024
Q1 | $2.61M | Sell |
26,613
-255,101
| -91% | -$23.1M | ﹤0.01% | 5020 |
|
|
2023
Q4 | $26M | Buy |
+281,714
| New | +$23.9M | 0.01% | 1761 |
|
|
2023
Q3 | – | Sell |
-22,287
| Closed | -$1.92M | – | 14208 |
|
|
2023
Q2 | $1.89M | Buy |
22,287
+18,659
| +514% | +$1.53M | ﹤0.01% | 5245 |
|
|
2023
Q1 | $306K | Sell |
3,628
-214,068
| -98% | -$18.5M | ﹤0.01% | 9346 |
|
|
2022
Q4 | $18.5M | Buy |
217,696
+213,394
| +4,960% | +$16.8M | ﹤0.01% | 2040 |
|
|
2022
Q3 | $294K | Sell |
4,302
-60,031
| -93% | -$4.26M | ﹤0.01% | 9623 |
|
|
2022
Q2 | $4.2M | Sell |
64,333
-388,074
| -86% | -$27.1M | ﹤0.01% | 4134 |
|
|
2022
Q1 | $34.7M | Sell |
452,407
-138,204
| -23% | -$10.1M | 0.01% | 1405 |
|
|
2021
Q4 | $45.7M | Buy |
590,611
+68,582
| +13% | +$4.82M | 0.01% | 1239 |
|
|
2021
Q3 | $33M | Sell |
522,029
-850,470
| -62% | -$54.1M | 0.01% | 1488 |
|
|
2021
Q2 | $86.9M | Buy |
1,372,499
+29,948
| +2% | +$1.96M | 0.02% | 751 |
|
|
2021
Q1 | $86.1M | Buy |
1,342,551
+89,757
| +7% | +$5.11M | 0.02% | 663 |
|
|
2020
Q4 | $62.4M | Buy |
1,252,794
+837,506
| +202% | +$40M | 0.02% | 804 |
|
|
2020
Q3 | $17.4M | Sell |
415,288
-382,690
| -48% | -$14.6M | ﹤0.01% | 1691 |
|
|
2020
Q2 | $30M | Sell |
797,978
-3,552,992
| -82% | -$127M | 0.01% | 1177 |
|
|
2020
Q1 | $130M | Buy |
4,350,970
+1,139,582
| +35% | +$48.7M | 0.06% | 245 |
|
|
2019
Q4 | $139M | Buy |
3,211,388
+382,027
| +14% | +$15.8M | 0.06% | 282 |
|
|
2019
Q3 | $106M | Buy |
2,829,361
+2,623,737
| +1,276% | +$94.5M | 0.05% | 371 |
|
|
2019
Q2 | $7.78M | Buy |
205,624
+193,149
| +1,548% | +$6.42M | ﹤0.01% | 2488 |
|
|
2019
Q1 | $370K | Buy |
+12,475
| New | +$373K | ﹤0.01% | 7287 |
|
|
2018
Q4 | – | Sell |
-8,531
| Closed | -$260K | – | 9010 |
|
|
2018
Q3 | $279K | Sell |
8,531
-7,702
| -47% | -$254K | ﹤0.01% | 7684 |
|
|
2018
Q2 | $536K | Sell |
16,233
-3,196
| -16% | -$110K | ﹤0.01% | 6254 |
|
|
2018
Q1 | $692K | Buy |
+19,429
| New | +$717K | ﹤0.01% | 5342 |
|
|
2017
Q3 | – | Sell |
-71,237
| Closed | -$2.34M | – | 7462 |
|
|
2017
Q2 | $2.3M | Buy |
71,237
+47,941
| +206% | +$1.59M | ﹤0.01% | 2988 |
|
|
2017
Q1 | $829K | Sell |
23,296
-1,194,249
| -98% | -$43.7M | ﹤0.01% | 4276 |
|
|
2016
Q4 | $44.3M | Buy |
1,217,545
+446,600
| +58% | +$14.8M | 0.04% | 434 |
|
|
2016
Q3 | $22.9M | Buy |
770,945
+595,038
| +338% | +$19.2M | 0.02% | 787 |
|
|
2016
Q2 | $5.59M | Buy |
175,907
+80,936
| +85% | +$2.56M | 0.01% | 1730 |
|
|
2016
Q1 | $2.92M | Buy |
+94,971
| New | +$2.64M | ﹤0.01% | 2276 |
|
|
2015
Q4 | – | Sell |
-4,867
| Closed | -$146K | – | 8663 |
|
|
2015
Q3 | $134K | Buy |
4,867
+2,915
| +149% | +$84.6K | ﹤0.01% | 6644 |
|
|
2015
Q2 | $65K | Sell |
1,952
-182,756
| -99% | -$6.03M | ﹤0.01% | 7467 |
|
|
2015
Q1 | $5.69M | Buy |
184,708
+144,603
| +361% | +$4.13M | 0.01% | 1900 |
|
|
2014
Q4 | $1.22M | Sell |
40,105
-107,266
| -73% | -$3.35M | ﹤0.01% | 3516 |
|
|
2014
Q3 | $4.97M | Buy |
147,371
+107,372
| +268% | +$3.81M | 0.01% | 1990 |
|
|
2014
Q2 | $1.29M | Buy |
39,999
+37,534
| +1,523% | +$1.21M | ﹤0.01% | 3187 |
|
|
2014
Q1 | $79K | Sell |
2,465
-114,562
| -98% | -$3.49M | ﹤0.01% | 6394 |
|
|
2013
Q4 | $3.44M | Buy |
117,027
+57,496
| +97% | +$1.74M | ﹤0.01% | 2018 |
|
|
2013
Q3 | $1.86M | Buy |
59,531
+52,886
| +796% | +$1.66M | ﹤0.01% | 2471 |
|
|
2013
Q2 | $211K | Buy |
+6,645
| New | +$201K | ﹤0.01% | 4622 |
|
Other funds holding ACM
VCM
VPM
Ken Griffin's ACM Position: Q1 2026 in Review
Ken Griffin increased its Aecom (ACM) stake by 39% in Q1 2026, buying an estimated $18.9M and bringing the position to 714,657 shares worth $60.6M. The position accounts for 0.01% of the portfolio, ranked #1180.
Ken Griffin first reported a position in ACM in Q2 2013 and has held it in 47 quarters since. The position peaked at $139M in Q4 2019. 620 funds tracked by Wall St. Rank hold ACM as of Q1 2026.
- Ken Griffin held 714,657 shares of Aecom worth $60.6M as of Q1 2026.
- Ken Griffin bought 199,914 Aecom shares in Q1 2026, an estimated $18.9M.
- Aecom made up 0.01% of Ken Griffin's portfolio in Q1 2026, its #1180 holding.
- Ken Griffin first reported a position in Aecom in Q2 2013 and has held it in 47 quarters since.
- Ken Griffin's Aecom position peaked at $139M in Q4 2019.
- 620 funds tracked by Wall St. Rank held Aecom as of Q1 2026.
Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.