William Blair Investment Management Portfolio holdings
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
BWX Technologies
BWXT
|
+$149M |
| 2 |
Maplebear
CART
|
+$145M |
| 3 |
BellRing Brands
BRBR
|
+$144M |
| 4 |
Oracle
ORCL
|
+$139M |
| 5 |
P
Everpure Inc
P
|
+$130M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Yum China
YUMC
|
+$217M |
| 2 |
Palo Alto Networks
PANW
|
+$192M |
| 3 |
e.l.f. Beauty
ELF
|
+$177M |
| 4 |
Stride
LRN
|
+$176M |
| 5 |
GTLS
Chart Industries
GTLS
|
+$153M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 35.89% |
| 2 | Consumer Discretionary | 15.09% |
| 3 | Financials | 13.13% |
| 4 | Healthcare | 10.3% |
| 5 | Industrials | 9.46% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
451
Power Integrations
POWI
$3.56B
| – | – |
-7,005
| Closed | -$354K |
|
452
Regal Rexnord
RRX
$11.5B
| – | – |
-781,091
| Closed | -$88.9M |
|
453
Sotera Health
SHC
$5.39B
| – | – |
-1,101,604
| Closed | -$12.8M |
|
454
Standard Motor Products
SMP
$881M
| – | – |
-337,135
| Closed | -$8.4M |
|
455
Stevanato
STVN
$5.8B
| – | – |
-38,728
| Closed | -$791K |
|
|
SUPV
456
Grupo Supervielle
SUPV
$720M
| – | – |
-1,449,137
| Closed | -$18.9M |
|
457
Tenable Holdings
TENB
$4.07B
| – | – |
-2,434,850
| Closed | -$85.2M |
|
458
Teleflex
TFX
$6B
| – | – |
-2,647
| Closed | -$366K |
|
459
TJX Companies
TJX
$168B
| – | – |
-10,014
| Closed | -$1.22M |
|
460
Veralto
VLTO
$23.6B
| – | – |
-9,128
| Closed | -$890K |
|
461
Clear Secure
YOU
$4.78B
| – | – |
-13,357
| Closed | -$346K |
|
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William Blair Investment Management's Q2 2025 Portfolio in Review
As of Q2 2025, William Blair Investment Management held 461 positions worth $37.7B, up 5.8% from $35.6B the previous quarter. Its ten largest holdings account for 30% of the portfolio.
William Blair Investment Management withdrew a net $2.27B in Q2 2025, closing 44 positions and reducing 257 holdings. Its most notable exit was The AZEK Co, an estimated $123M position sold in full.
By sector, the portfolio is most concentrated in Technology at 36% of assets, up from 33% a quarter earlier, followed by Consumer Discretionary and Financials.
Against the trend, William Blair Investment Management opened a new position in Maplebear worth $151M.
- William Blair Investment Management's largest Q2 2025 buy was Maplebear: 3,345,792 shares worth $151M.
- William Blair Investment Management added most to BWX Technologies in Q2 2025, an estimated $149M increase.
- William Blair Investment Management's biggest Q2 2025 reduction was Yum China, cutting an estimated $217M.
- William Blair Investment Management fully exited The AZEK Co in Q2 2025, selling an estimated $123M.
- William Blair Investment Management's ten largest holdings make up 30% of its $37.7B portfolio in Q2 2025.
- William Blair Investment Management opened 38 new positions and closed 44 in Q2 2025.
- William Blair Investment Management's portfolio value rose 5.8% quarter-over-quarter to $37.7B.
Based on William Blair Investment Management's 13F filing for Q2 2025, filed 29 Jul 2025.