William Blair & Company
IYZ icon

William Blair & Company’s iShares US Telecommunications ETF IYZ Stock Holding History

William Blair & Company’s Portfolio IYZ Stock Details IYZ Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$371K Buy
8,778
+22
+0.3% +$934 ﹤0.01% 1331
2026
Q1 		$344K Buy
8,756
+26
+0.3% +$973 ﹤0.01% 1283
2025
Q4 		$296K Buy
8,730
+723
+9% +$23.7K ﹤0.01% 1317
2025
Q3 		$258K Sell
8,007
-166
-2% -$5.11K ﹤0.01% 1359
2025
Q2 		$243K Sell
8,173
-47
-0.6% -$1.29K ﹤0.01% 1343
2025
Q1 		$225K Buy
8,220
+119
+1% +$3.29K ﹤0.01% 1364
2024
Q4 		$217K Buy
8,101
+49
+0.6% +$1.31K ﹤0.01% 1414
2024
Q3 		$203K Sell
8,052
-8,155
-50% -$188K ﹤0.01% 1434
2024
Q2 		$352K Buy
16,207
+4,200
+35% +$89K ﹤0.01% 1212
2024
Q1 		$264K Sell
12,007
-860
-7% -$19.3K ﹤0.01% 1299
2023
Q4 		$293K Sell
12,867
-65
-0.5% -$1.39K ﹤0.01% 1260
2023
Q3 		$275K Buy
12,932
+1,078
+9% +$23.8K ﹤0.01% 1268
2023
Q2 		$262K Hold
11,854
– – ﹤0.01% 1301
2023
Q1 		$275K Hold
11,854
– – ﹤0.01% 1275
2022
Q4 		$266K Sell
11,854
-735
-6% -$16.4K ﹤0.01% 1277
2022
Q3 		$263K Hold
12,589
– – ﹤0.01% 1281
2022
Q2 		$316K Hold
12,589
– – ﹤0.01% 1241
2022
Q1 		$376K Hold
12,589
– – ﹤0.01% 1271
2021
Q4 		$414K Buy
12,589
+191
+2% +$6.15K ﹤0.01% 1289
2021
Q3 		$402K Hold
12,398
– – ﹤0.01% 1240
2021
Q2 		$412K Hold
12,398
– – ﹤0.01% 1221
2021
Q1 		$401K Buy
12,398
+4,383
+55% +$138K ﹤0.01% 1223
2020
Q4 		$242K Hold
8,015
– – ﹤0.01% 1352
2020
Q3 		$218K Sell
8,015
-7,633
-49% -$216K ﹤0.01% 1262
2020
Q2 		$431K Buy
15,648
+7,082
+83% +$192K ﹤0.01% 984
2020
Q1 		$213K Buy
8,566
+3,825
+81% +$109K ﹤0.01% 1145
2019
Q4 		$142K Hold
4,741
– – ﹤0.01% 1364
2019
Q3 		$138K Hold
4,741
– – ﹤0.01% 1342
2019
Q2 		$140K Hold
4,741
– – ﹤0.01% 1382
2019
Q1 		$141K Sell
4,741
-2,075
-30% -$59.4K ﹤0.01% 1359
2018
Q4 		$180K Buy
6,816
+2,210
+48% +$61.9K ﹤0.01% 1247
2018
Q3 		$137K Hold
4,606
– – ﹤0.01% 1344
2018
Q2 		$127K Hold
4,606
– – ﹤0.01% 1324
2018
Q1 		$124K Buy
+4,606
New +$131K ﹤0.01% 1249

Other funds holding IYZ

Focus Partners Wealth
Focus Partners Wealth Boston, Massachusetts $97.6B AUM 29.43% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
LPL Financial
LPL Financial San Diego, California $445B AUM 25.58% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Wells Fargo
Wells Fargo San Francisco, California $617B AUM 30.33% 1-Year Est. Return
MML Investors Services
MML Investors Services Springfield, Massachusetts $49B AUM 25.55% 1-Year Est. Return
Raymond James Financial
Raymond James Financial St Petersburg, Florida $369B AUM 28.27% 1-Year Est. Return
MWM
MinichMacGregor Wealth Management Saratoga Springs, New York $659M AUM 41.82% 1-Year Est. Return
Citigroup
Citigroup New York $303B AUM 53.02% 1-Year Est. Return
ASN
Advisory Services Network Atlanta, Georgia $8.83B AUM 38.5% 1-Year Est. Return

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

William Blair & Company increased its iShares US Telecommunications ETF (IYZ) stake by 0.25% in Q2 2026, buying an estimated $934 and bringing the position to 8,778 shares worth $371K. The position accounts for ﹤0.01% of the portfolio, ranked #1331.

William Blair & Company first reported a position in IYZ in Q1 2018 and has held it in 34 quarters since. The position peaked at $431K in Q2 2020. 211 funds tracked by Wall St. Rank hold IYZ as of Q2 2026.

  • William Blair & Company held 8,778 shares of iShares US Telecommunications ETF worth $371K as of Q2 2026.
  • William Blair & Company bought 22 iShares US Telecommunications ETF shares in Q2 2026, an estimated $934.
  • iShares US Telecommunications ETF made up ﹤0.01% of William Blair & Company's portfolio in Q2 2026, its #1331 holding.
  • William Blair & Company first reported a position in iShares US Telecommunications ETF in Q1 2018 and has held it in 34 quarters since.
  • William Blair & Company's iShares US Telecommunications ETF position peaked at $431K in Q2 2020.
  • 211 funds tracked by Wall St. Rank held iShares US Telecommunications ETF as of Q2 2026.

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