William Blair & Company’s iShares Global 100 ETF IOO Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $4.01M | Buy |
33,152
+31,027
| +1,460% | +$3.91M | 0.01% | 552 |
|
|
2025
Q4 | $269K | Sell |
2,125
-37
| -2% | -$4.6K | ﹤0.01% | 1348 |
|
|
2025
Q3 | $259K | Hold |
2,162
| – | – | ﹤0.01% | 1357 |
|
|
2025
Q2 | $233K | Sell |
2,162
-1,267
| -37% | -$126K | ﹤0.01% | 1360 |
|
|
2025
Q1 | $330K | Hold |
3,429
| – | – | ﹤0.01% | 1225 |
|
|
2024
Q4 | $346K | Buy |
3,429
+5
| +0.1% | +$502 | ﹤0.01% | 1235 |
|
|
2024
Q3 | $340K | Sell |
3,424
-57
| -2% | -$5.5K | ﹤0.01% | 1244 |
|
|
2024
Q2 | $336K | Buy |
3,481
+1,036
| +42% | +$95K | ﹤0.01% | 1232 |
|
|
2024
Q1 | $219K | Sell |
2,445
-133
| -5% | -$11.3K | ﹤0.01% | 1373 |
|
|
2023
Q4 | $208K | Sell |
2,578
-42
| -2% | -$3.21K | ﹤0.01% | 1386 |
|
|
2023
Q3 | $192K | Buy |
2,620
+1,373
| +110% | +$104K | ﹤0.01% | 1398 |
|
|
2023
Q2 | $94.8K | Buy |
1,247
+13
| +1% | +$949 | ﹤0.01% | 1525 |
|
|
2023
Q1 | $86.4K | Hold |
1,234
| – | – | ﹤0.01% | 1518 |
|
|
2022
Q4 | $79K | Sell |
1,234
-243
| -16% | -$15.6K | ﹤0.01% | 1515 |
|
|
2022
Q3 | $88K | Buy |
1,477
+32
| +2% | +$2.12K | ﹤0.01% | 1523 |
|
|
2022
Q2 | $93K | Buy |
1,445
+14
| +1% | +$972 | ﹤0.01% | 1549 |
|
|
2022
Q1 | $109K | Buy |
1,431
+222
| +18% | +$16.6K | ﹤0.01% | 1625 |
|
|
2021
Q4 | $94K | Buy |
1,209
+8
| +0.7% | +$605 | ﹤0.01% | 1703 |
|
|
2021
Q3 | $85K | Hold |
1,201
| – | – | ﹤0.01% | 1632 |
|
|
2021
Q2 | $85K | Buy |
1,201
+11
| +0.9% | +$766 | ﹤0.01% | 1632 |
|
|
2021
Q1 | $79K | Sell |
1,190
-375
| -24% | -$24.3K | ﹤0.01% | 1622 |
|
|
2020
Q4 | $98K | Sell |
1,565
-407
| -21% | -$24.2K | ﹤0.01% | 1555 |
|
|
2020
Q3 | $111K | Buy |
1,972
+780
| +65% | +$44K | ﹤0.01% | 1415 |
|
|
2020
Q2 | $63K | Buy |
1,192
+11
| +0.9% | +$549 | ﹤0.01% | 1423 |
|
|
2020
Q1 | $53K | Hold |
1,181
| – | – | ﹤0.01% | 1382 |
|
|
2019
Q4 | $64K | Buy |
1,181
+10
| +0.9% | +$515 | ﹤0.01% | 1466 |
|
|
2019
Q3 | $58K | Sell |
1,171
-500
| -30% | -$24.4K | ﹤0.01% | 1439 |
|
|
2019
Q2 | $82K | Buy |
1,671
+22
| +1% | +$1.06K | ﹤0.01% | 1447 |
|
|
2019
Q1 | $78K | Hold |
1,649
| – | – | ﹤0.01% | 1427 |
|
|
2018
Q4 | $70K | Buy |
1,649
+16
| +1% | +$729 | ﹤0.01% | 1355 |
|
|
2018
Q3 | $80K | Hold |
1,633
| – | – | ﹤0.01% | 1405 |
|
|
2018
Q2 | $75K | Buy |
1,633
+33
| +2% | +$1.54K | ﹤0.01% | 1373 |
|
|
2018
Q1 | $73K | Buy |
+1,600
| New | +$75.3K | ﹤0.01% | 1303 |
|
Other funds holding IOO
AAS
SI
William Blair & Company's IOO Position: Q1 2026 in Review
William Blair & Company increased its iShares Global 100 ETF (IOO) stake by 1,460% in Q1 2026, buying an estimated $3.91M and bringing the position to 33,152 shares worth $4.01M. The position accounts for 0.01% of the portfolio, ranked #552.
William Blair & Company first reported a position in IOO in Q1 2018 and has held it in 33 quarters since. 356 funds tracked by Wall St. Rank hold IOO as of Q1 2026.
- William Blair & Company held 33,152 shares of iShares Global 100 ETF worth $4.01M as of Q1 2026.
- William Blair & Company bought 31,027 iShares Global 100 ETF shares in Q1 2026, an estimated $3.91M.
- iShares Global 100 ETF made up 0.01% of William Blair & Company's portfolio in Q1 2026, its #552 holding.
- William Blair & Company first reported a position in iShares Global 100 ETF in Q1 2018 and has held it in 33 quarters since.
- 356 funds tracked by Wall St. Rank held iShares Global 100 ETF as of Q1 2026.
Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.