William Blair & Company’s iShares US Utilities ETF IDU Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $63K | Hold |
543
| – | – | ﹤0.01% | 1666 |
|
|
2025
Q4 | $58.8K | Hold |
543
| – | – | ﹤0.01% | 1634 |
|
|
2025
Q3 | $60.2K | Hold |
543
| – | – | ﹤0.01% | 1614 |
|
|
2025
Q2 | $56.8K | Hold |
543
| – | – | ﹤0.01% | 1596 |
|
|
2025
Q1 | $55.1K | Sell |
543
-77
| -12% | -$7.69K | ﹤0.01% | 1577 |
|
|
2024
Q4 | $59.6K | Hold |
620
| – | – | ﹤0.01% | 1586 |
|
|
2024
Q3 | $63.3K | Hold |
620
| – | – | ﹤0.01% | 1603 |
|
|
2024
Q2 | $54.5K | Buy |
620
+480
| +343% | +$42.2K | ﹤0.01% | 1590 |
|
|
2024
Q1 | $11.8K | Hold |
140
| – | – | ﹤0.01% | 1710 |
|
|
2023
Q4 | $11.2K | Sell |
140
-51
| -27% | -$3.91K | ﹤0.01% | 1700 |
|
|
2023
Q3 | $14.1K | Hold |
191
| – | – | ﹤0.01% | 1697 |
|
|
2023
Q2 | $15.6K | Sell |
191
-200
| -51% | -$16.6K | ﹤0.01% | 1706 |
|
|
2023
Q1 | $32.7K | Sell |
391
-1,210
| -76% | -$101K | ﹤0.01% | 1639 |
|
|
2022
Q4 | $139K | Hold |
1,601
| – | – | ﹤0.01% | 1436 |
|
|
2022
Q3 | $130K | Buy |
1,601
+190
| +13% | +$17.1K | ﹤0.01% | 1466 |
|
|
2022
Q2 | $121K | Hold |
1,411
| – | – | ﹤0.01% | 1507 |
|
|
2022
Q1 | $128K | Hold |
1,411
| – | – | ﹤0.01% | 1605 |
|
|
2021
Q4 | $125K | Buy |
1,411
+51
| +4% | +$4.27K | ﹤0.01% | 1662 |
|
|
2021
Q3 | $107K | Buy |
1,360
+150
| +12% | +$12.4K | ﹤0.01% | 1607 |
|
|
2021
Q2 | $95K | Sell |
1,210
-280
| -19% | -$22.7K | ﹤0.01% | 1619 |
|
|
2021
Q1 | $119K | Sell |
1,490
-1,360
| -48% | -$105K | ﹤0.01% | 1571 |
|
|
2020
Q4 | $221K | Hold |
2,850
| – | – | ﹤0.01% | 1393 |
|
|
2020
Q3 | $208K | Hold |
2,850
| – | – | ﹤0.01% | 1282 |
|
|
2020
Q2 | $200K | Hold |
2,850
| – | – | ﹤0.01% | 1242 |
|
|
2020
Q1 | $197K | Buy |
2,850
+900
| +46% | +$71.8K | ﹤0.01% | 1172 |
|
|
2019
Q4 | $158K | Sell |
1,950
-100
| -5% | -$7.97K | ﹤0.01% | 1344 |
|
|
2019
Q3 | $167K | Sell |
2,050
-200
| -9% | -$15.6K | ﹤0.01% | 1308 |
|
|
2019
Q2 | $170K | Hold |
2,250
| – | – | ﹤0.01% | 1341 |
|
|
2019
Q1 | $166K | Hold |
2,250
| – | – | ﹤0.01% | 1337 |
|
|
2018
Q4 | $151K | Hold |
2,250
| – | – | ﹤0.01% | 1266 |
|
|
2018
Q3 | $151K | Sell |
2,250
-680
| -23% | -$45.9K | ﹤0.01% | 1332 |
|
|
2018
Q2 | $193K | Sell |
2,930
-50
| -2% | -$3.19K | ﹤0.01% | 1268 |
|
|
2018
Q1 | $190K | Buy |
+2,980
| New | +$188K | ﹤0.01% | 1213 |
|
|
2014
Q1 | – | Sell |
-5,430
| Closed | -$260K | – | 2049 |
|
|
2013
Q4 | $260K | Sell |
5,430
-9,944
| -65% | -$478K | ﹤0.01% | 1788 |
|
|
2013
Q3 | $721K | Sell |
15,374
-2,506
| -14% | -$120K | ﹤0.01% | 1436 |
|
|
2013
Q2 | $845K | Buy |
+17,880
| New | +$872K | ﹤0.01% | 1335 |
|
Other funds holding IDU
DWM
PRS
PCH
SPIA
William Blair & Company's IDU Position: Q1 2026 in Review
William Blair & Company held its iShares US Utilities ETF (IDU) position steady in Q1 2026 at 543 shares worth $63K. The position accounts for ﹤0.01% of the portfolio, ranked #1666.
William Blair & Company first reported a position in IDU in Q2 2013 and has held it in 36 quarters since. The position peaked at $845K in Q2 2013. 300 funds tracked by Wall St. Rank hold IDU as of Q1 2026.
- William Blair & Company held 543 shares of iShares US Utilities ETF worth $63K as of Q1 2026.
- William Blair & Company left its iShares US Utilities ETF share count unchanged in Q1 2026.
- iShares US Utilities ETF made up ﹤0.01% of William Blair & Company's portfolio in Q1 2026, its #1666 holding.
- William Blair & Company first reported a position in iShares US Utilities ETF in Q2 2013 and has held it in 36 quarters since.
- William Blair & Company's iShares US Utilities ETF position peaked at $845K in Q2 2013.
- 300 funds tracked by Wall St. Rank held iShares US Utilities ETF as of Q1 2026.
Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.