William Blair Investment Management
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William Blair Investment Management’s ABM Industries ABM Stock Holding History

William Blair Investment Management’s Portfolio ABM Stock Details ABM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$17M Sell
385,260
-102,441
-21% -$4.2M 0.05% 268
2026
Q1 		$18.8M Buy
487,701
+16,581
+4% +$717K 0.06% 261
2025
Q4 		$19.9M Sell
471,120
-211,245
-31% -$9.28M 0.06% 272
2025
Q3 		$31.5M Sell
682,365
-41,347
-6% -$1.96M 0.08% 208
2025
Q2 		$34.2M Sell
723,712
-59,098
-8% -$2.86M 0.09% 177
2025
Q1 		$37.1M Sell
782,810
-36,000
-4% -$1.85M 0.1% 174
2024
Q4 		$41.9M Buy
818,810
+19,783
+2% +$1.08M 0.1% 175
2024
Q3 		$42.2M Sell
799,027
-25,664
-3% -$1.36M 0.1% 157
2024
Q2 		$41.7M Sell
824,691
-1,822
-0.2% -$85K 0.11% 155
2024
Q1 		$36.9M Sell
826,513
-570
-0.1% -$23.9K 0.1% 199
2023
Q4 		$37.1M Sell
827,083
-16,289
-2% -$688K 0.11% 185
2023
Q3 		$33.7M Sell
843,372
-59,261
-7% -$2.57M 0.11% 178
2023
Q2 		$38.5M Buy
902,633
+16,649
+2% +$721K 0.12% 169
2023
Q1 		$39.8M Buy
885,984
+2,359
+0.3% +$109K 0.14% 151
2022
Q4 		$39.3M Sell
883,625
-33,415
-4% -$1.47M 0.15% 143
2022
Q3 		$35.1M Sell
917,040
-16,285
-2% -$713K 0.14% 156
2022
Q2 		$40.5M Sell
933,325
-29,189
-3% -$1.35M 0.15% 151
2022
Q1 		$44.3M Sell
962,514
-11,702
-1% -$509K 0.13% 168
2021
Q4 		$39.8M Buy
974,216
+212,300
+28% +$9.59M 0.11% 212
2021
Q3 		$34.3M Buy
761,916
+760,336
+48,123% +$35.2M 0.1% 243
2021
Q2 		$70K Buy
+1,580
New +$79.3K ﹤0.01% 428
2015
Q4 		– Sell
-692,658
Closed -$18.9M – 445
2015
Q3 		$18.9M Buy
+692,658
New +$21.9M 0.04% 534

Other funds holding ABM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 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
Harris Associates
Harris Associates Chicago, Illinois $75.4B AUM 14.46% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
LSV Asset Management
LSV Asset Management Chicago, Illinois $55.1B AUM 45.38% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Pzena Investment Management
Pzena Investment Management New York $34.1B AUM 23.81% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $495B AUM 43.24% 1-Year Est. Return

William Blair Investment Management's ABM Position: Q2 2026 in Review

William Blair Investment Management reduced its ABM Industries (ABM) stake by 21% in Q2 2026, selling an estimated $4.2M and leaving 385,260 shares worth $17M. The position accounts for 0.05% of the portfolio, ranked #268.

William Blair Investment Management first reported a position in ABM in Q3 2015 and has held it in 22 quarters since. The position peaked at $44.3M in Q1 2022. 307 funds tracked by Wall St. Rank hold ABM as of Q2 2026.

  • William Blair Investment Management held 385,260 shares of ABM Industries worth $17M as of Q2 2026.
  • William Blair Investment Management sold 102,441 ABM Industries shares in Q2 2026, an estimated $4.2M.
  • ABM Industries made up 0.05% of William Blair Investment Management's portfolio in Q2 2026, its #268 holding.
  • William Blair Investment Management first reported a position in ABM Industries in Q3 2015 and has held it in 22 quarters since.
  • William Blair Investment Management's ABM Industries position peaked at $44.3M in Q1 2022.
  • 307 funds tracked by Wall St. Rank held ABM Industries as of Q2 2026.

Based on William Blair Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.