Boston Partners
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Boston Partners’s Allison Transmission ALSN Stock Holding History

Boston Partners’s Portfolio ALSN Stock Details ALSN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$358M Buy
3,176,528
+319,918
+11% +$38.8M 0.32% 103
2026
Q1 		$334M Buy
2,856,610
+540,370
+23% +$61.4M 0.35% 94
2025
Q4 		$227M Buy
2,316,240
+277,811
+14% +$24.4M 0.23% 154
2025
Q3 		$173M Buy
2,038,429
+1,101,824
+118% +$98.1M 0.18% 177
2025
Q2 		$88.9M Sell
936,605
-137,286
-13% -$13.3M 0.1% 217
2025
Q1 		$103M Sell
1,073,891
-16,346
-1% -$1.73M 0.12% 199
2024
Q4 		$118M Sell
1,090,237
-348,938
-24% -$38.1M 0.14% 187
2024
Q3 		$139M Sell
1,439,175
-111,992
-7% -$9.6M 0.16% 190
2024
Q2 		$118M Sell
1,551,167
-54,376
-3% -$4.17M 0.15% 195
2024
Q1 		$130M Sell
1,605,543
-52,899
-3% -$3.57M 0.15% 195
2023
Q4 		$96.5M Sell
1,658,442
-89,072
-5% -$4.97M 0.13% 215
2023
Q3 		$102M Buy
1,747,514
+29,912
+2% +$1.76M 0.14% 196
2023
Q2 		$97.2M Sell
1,717,602
-111,455
-6% -$5.48M 0.13% 197
2023
Q1 		$83.1M Sell
1,829,057
-23,049
-1% -$1.04M 0.11% 195
2022
Q4 		$77.5M Sell
1,852,106
-13,466
-0.7% -$553K 0.1% 191
2022
Q3 		$64M Sell
1,865,572
-85,407
-4% -$3.19M 0.09% 204
2022
Q2 		$75.3M Sell
1,950,979
-20,677
-1% -$790K 0.11% 205
2022
Q1 		$77.1M Buy
1,971,656
+13,881
+0.7% +$546K 0.09% 211
2021
Q4 		$71.3M Sell
1,957,775
-4,039,547
-67% -$143M 0.09% 221
2021
Q3 		$212M Sell
5,997,322
-2,376,325
-28% -$90.7M 0.27% 131
2021
Q2 		$333M Sell
8,373,647
-765,692
-8% -$32.6M 0.42% 76
2021
Q1 		$374M Buy
9,139,339
+2,729,004
+43% +$114M 0.5% 59
2020
Q4 		$276M Buy
+6,410,335
New +$258M 0.43% 76
2015
Q2 		– Sell
-363,481
Closed -$11.6M – 705
2015
Q1 		$11.6M Buy
+363,481
New +$11.7M 0.02% 383

Other funds holding ALSN

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return
LSV Asset Management
LSV Asset Management Chicago, Illinois $55.1B AUM 45.38% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
LCOV
London Company of Virginia Richmond, Virginia $17.5B AUM 29.92% 1-Year Est. Return

Boston Partners's ALSN Position: Q2 2026 in Review

Boston Partners increased its Allison Transmission (ALSN) stake by 11% in Q2 2026, buying an estimated $38.8M and bringing the position to 3,176,528 shares worth $358M. The position accounts for 0.32% of the portfolio, ranked #103.

Boston Partners first reported a position in ALSN in Q1 2015 and has held it in 24 quarters since. The position peaked at $374M in Q1 2021. 570 funds tracked by Wall St. Rank hold ALSN as of Q2 2026.

  • Boston Partners held 3,176,528 shares of Allison Transmission worth $358M as of Q2 2026.
  • Boston Partners bought 319,918 Allison Transmission shares in Q2 2026, an estimated $38.8M.
  • Allison Transmission made up 0.32% of Boston Partners's portfolio in Q2 2026, its #103 holding.
  • Boston Partners first reported a position in Allison Transmission in Q1 2015 and has held it in 24 quarters since.
  • Boston Partners's Allison Transmission position peaked at $374M in Q1 2021.
  • 570 funds tracked by Wall St. Rank held Allison Transmission as of Q2 2026.

Based on Boston Partners's 13F filing for Q2 2026, filed 4 Aug 2026.