William Blair & Company’s iShares Russell 1000 Growth ETF IWF Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q2
$121M Sell
973,601
-90,503
-9% -$10.9M 0.31% 70
2026
Q1
$113M Buy
1,064,104
+12,032
+1% +$1.37M 0.33% 73
2025
Q4
$124M Buy
1,052,072
+48,880
+5% +$5.79M 0.33% 71
2025
Q3
$117M Buy
1,003,192
+6,820
+0.7% +$759K 0.31% 77
2025
Q2
$106M Buy
996,372
+113,880
+13% +$10.9M 0.29% 84
2025
Q1
$79.7M Buy
882,492
+16,072
+2% +$1.59M 0.24% 97
2024
Q4
$87M Buy
866,420
+60,256
+7% +$5.93M 0.25% 94
2024
Q3
$75.7M Sell
806,164
-3,968
-0.5% -$360K 0.22% 102
2024
Q2
$73.8M Buy
810,132
+67,484
+9% +$5.76M 0.23% 101
2024
Q1
$62.6M Buy
742,648
+72,508
+11% +$5.84M 0.2% 113
2023
Q4
$50.8M Sell
670,140
-12,872
-2% -$910K 0.17% 120
2023
Q3
$45.4M Buy
683,012
+39,720
+6% +$2.74M 0.17% 120
2023
Q2
$44.3M Buy
643,292
+202,124
+46% +$12.9M 0.16% 127
2023
Q1
$26.9M Sell
441,168
-1,880
-0.4% -$108K 0.11% 170
2022
Q4
$23.7M Sell
443,048
-36,664
-8% -$2.02M 0.1% 172
2022
Q3
$25.2M Buy
479,712
+75,940
+19% +$4.47M 0.12% 167
2022
Q2
$0 Buy
403,772
+33,584
+9% +$2.02M ﹤0.01% 1901
2022
Q1
$0 Sell
370,188
-1,788
-0.5% -$122K ﹤0.01% 1955
2021
Q4
$28.4M Buy
371,976
+1,108
+0.3% +$82.1K 0.09% 202
2021
Q3
$25.4M Buy
370,868
+30,624
+9% +$2.17M 0.09% 204
2021
Q2
$23.1M Buy
340,244
+14,676
+5% +$946K 0.08% 209
2021
Q1
$19.8M Sell
325,568
-15,240
-4% -$928K 0.07% 222
2020
Q4
$0 Buy
340,808
+10,728
+3% +$611K ﹤0.01% 1839
2020
Q3
$17.9M Buy
330,080
+4,264
+1% +$225K 0.08% 202
2020
Q2
$15.6M Buy
325,816
+3,692
+1% +$163K 0.07% 207
2020
Q1
$12.1M Buy
322,124
+54,944
+21% +$2.37M 0.08% 209
2019
Q4
$11.8M Buy
267,180
+3,528
+1% +$147K 0.06% 250
2019
Q3
$10.5M Buy
263,652
+14,396
+6% +$577K 0.06% 249
2019
Q2
$9.8M Buy
249,256
+15,396
+7% +$596K 0.06% 262
2019
Q1
$8.85M Sell
233,860
-24,836
-10% -$892K 0.05% 277
2018
Q4
$8.47M Buy
258,696
+12,452
+5% +$439K 0.06% 257
2018
Q3
$9.6M Buy
246,244
+1,584
+0.6% +$60K 0.06% 263
2018
Q2
$8.8M Sell
244,660
-616
-0.3% -$21.7K 0.06% 260
2018
Q1
$8.35M Sell
245,276
-16,004
-6% -$561K 0.06% 264
2017
Q4
$8.8M Sell
261,280
-70,780
-21% -$2.32M 0.06% 257
2017
Q3
$10.4M Sell
332,060
-1,548
-0.5% -$47.4K 0.08% 233
2017
Q2
$9.93M Buy
333,608
+2,348
+0.7% +$68.9K 0.07% 239
2017
Q1
$9.38M Sell
331,260
-9,504
-3% -$264K 0.08% 233
2016
Q4
$8.94M Sell
340,764
-7,120
-2% -$185K 0.08% 227
2016
Q3
$9.06M Sell
347,884
-30,752
-8% -$800K 0.08% 229
2016
Q2
$9.5M Buy
378,636
+64,396
+20% +$1.61M 0.09% 212
2016
Q1
$7.84M Sell
314,240
-14,052
-4% -$332K 0.07% 227
2015
Q4
$8.16M Buy
328,292
+7,864
+2% +$196K 0.08% 227
2015
Q3
$7.45M Buy
320,428
+137,036
+75% +$3.37M 0.06% 260
2015
Q2
$4.54M Sell
183,392
-320
-0.2% -$8.05K 0.01% 1098
2015
Q1
$4.54M Buy
183,712
+9,100
+5% +$222K 0.01% 1066
2014
Q4
$4.17M Sell
174,612
-410,692
-70% -$9.61M 0.01% 1083
2014
Q3
$13.4M Sell
585,304
-408
-0.1% -$9.35K 0.02% 735
2014
Q2
$13.3M Sell
585,712
-4,328
-0.7% -$95K 0.02% 753
2014
Q1
$12.8M Sell
590,040
-5,424
-0.9% -$116K 0.02% 735
2013
Q4
$12.8M Buy
595,464
+13,840
+2% +$284K 0.02% 720
2013
Q3
$11.4M Buy
581,624
+3,552
+0.6% +$68K 0.02% 690
2013
Q2
$10.5M Buy
+578,072
New +$10.6M 0.02% 701

Other funds holding IWF

William Blair & Company's IWF Position: Q2 2026 in Review

William Blair & Company reduced its iShares Russell 1000 Growth ETF (IWF) stake by 8.5% in Q2 2026, selling an estimated $10.9M and leaving 973,601 shares worth $121M. The position accounts for 0.31% of the portfolio, ranked #70.

William Blair & Company first reported a position in IWF in Q2 2013 and has held it in 53 quarters since. The position peaked at $124M in Q4 2025. 2,499 funds tracked by Wall St. Rank hold IWF as of Q2 2026.

  • William Blair & Company held 973,601 shares of iShares Russell 1000 Growth ETF worth $121M as of Q2 2026.
  • William Blair & Company sold 90,503 iShares Russell 1000 Growth ETF shares in Q2 2026, an estimated $10.9M.
  • iShares Russell 1000 Growth ETF made up 0.31% of William Blair & Company's portfolio in Q2 2026, its #70 holding.
  • William Blair & Company first reported a position in iShares Russell 1000 Growth ETF in Q2 2013 and has held it in 53 quarters since.
  • William Blair & Company's iShares Russell 1000 Growth ETF position peaked at $124M in Q4 2025.
  • 2,499 funds tracked by Wall St. Rank held iShares Russell 1000 Growth ETF as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.