William Blair Investment Management Portfolio holdings
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
GE Aerospace
GE
|
+$248M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$247M |
| 3 |
Applied Materials
AMAT
|
+$214M |
| 4 |
Teva Pharmaceuticals
TEVA
|
+$172M |
| 5 |
Canadian Natural Resources
CNQ
|
+$165M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$444M |
| 2 |
Microsoft
MSFT
|
+$343M |
| 3 |
Amazon
AMZN
|
+$295M |
| 4 |
TSMC
TSM
|
+$236M |
| 5 |
Twist Bioscience
TWST
|
+$201M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 37.42% |
| 2 | Healthcare | 13.71% |
| 3 | Industrials | 12.98% |
| 4 | Financials | 10.06% |
| 5 | Consumer Discretionary | 8.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
VNET
451
VNET Group
VNET
$1.86B
| – | – |
-308,997
| Closed | -$2.59M |
|
452
Verra Mobility
VRRM
$667M
| – | – |
-388,617
| Closed | -$5.55M |
|
453
WaFd
WAFD
$2.67B
| – | – |
-352,838
| Closed | -$11.1M |
|
454
Advanced Drainage Systems
WMS
$10.3B
| – | – |
-655,684
| Closed | -$89.9M |
|
455
WillScot Mobile Mini Holdings
WSC
$3.79B
| – | – |
-1,494,201
| Closed | -$25.9M |
|
456
Willis Towers Watson
WTW
$31.9B
| – | – |
-712
| Closed | -$207K |
|
|
SILA
457
DELISTED
Sila Realty Trust
SILA
| – | – |
-1,387,324
| Closed | -$32.9M |
|
|
FIGR
458
Figure Technology Solutions
FIGR
$8.09B
| – | – |
-120,255
| Closed | -$4.08M |
|
|
BGSI
459
Boyd Group Services
BGSI
$2.39B
| – | – |
-135,248
| Closed | -$17.3M |
|
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William Blair Investment Management's Q2 2026 Portfolio in Review
As of Q2 2026, William Blair Investment Management held 459 positions worth $33.3B, up 9.9% from $30.3B the previous quarter. Its ten largest holdings account for 29% of the portfolio.
William Blair Investment Management withdrew a net $2.39B in Q2 2026, closing 56 positions and reducing 231 holdings. Its most notable exit was Coherent, an estimated $159M position sold in full.
By sector, the portfolio is most concentrated in Technology at 37% of assets, up from 36% a quarter earlier, followed by Healthcare and Industrials.
Against the trend, William Blair Investment Management opened a new position in GE Aerospace worth $296M.
- William Blair Investment Management's largest Q2 2026 buy was GE Aerospace: 790,801 shares worth $296M.
- William Blair Investment Management added most to Alphabet (Google) Class A in Q2 2026, an estimated $247M increase.
- William Blair Investment Management's biggest Q2 2026 reduction was Apple, cutting an estimated $444M.
- William Blair Investment Management fully exited Coherent in Q2 2026, selling an estimated $159M.
- William Blair Investment Management's ten largest holdings make up 29% of its $33.3B portfolio in Q2 2026.
- William Blair Investment Management opened 46 new positions and closed 56 in Q2 2026.
- William Blair Investment Management's portfolio value rose 9.9% quarter-over-quarter to $33.3B.
Based on William Blair Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.