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William Blair Investment Management Portfolio holdings
AUM
$33.3B
1-Year Est. Return
44.76%
This Fund
S&P 500
This Quarter
Est. Return
+17.18%
1 Year Est. Return
+44.76%
3 Year Est. Return
+140.8%
5 Year Est. Return
+166.51%
10 Year Est. Return
+978.6%
AUM
$37.7B
AUM Growth
+$2.06B
(+5.8%)
Cap. Flow
-$2.27B
Cap. Flow
% of AUM
-6.03%
Top 10 Holdings %
Top 10 Hldgs %
30.35%
Holding
461
New
38
Increased
117
Reduced
257
Closed
44
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 | |
|---|---|---|---|---|---|---|
326
Old Dominion Freight Line
ODFL
$44.1B
| $10.5M | 0.03% |
64,485
-80,934
| -56% | -$12.9M |
|
327
Vertex Pharmaceuticals
VRTX
$133B
| $10.1M | 0.03% |
22,608
-56,724
| -72% | -$26.1M |
|
328
TKO Group
TKO
$14.3B
| $9.92M | 0.03% |
+54,541
| New | +$8.76M |
|
329
Cellebrite
CLBT
$3.77B
| $8.84M | 0.02% |
552,546
-121,105
| -18% | -$2.16M |
|
330
Applied Materials
AMAT
$435B
| $8.41M | 0.02% |
45,938
-52,460
| -53% | -$8.31M |
|
|
THS
331
DELISTED
Treehouse Foods
THS
| $8.2M | 0.02% |
422,498
-253,986
| -38% | -$5.69M |
|
332
Kinsale Capital Group
KNSL
$8.52B
| $8.06M | 0.02% |
16,661
-20,998
| -56% | -$9.79M |
|
333
Carrier Global
CARR
$52.2B
| $7.75M | 0.02% |
105,864
-120,947
| -53% | -$8.21M |
|
334
Quanterix
QTRX
$131M
| $7.5M | 0.02% |
1,127,981
+21,918
| +2% | +$122K |
|
335
Vita Coco
COCO
$3.81B
| $7.48M | 0.02% |
207,066
-441,125
| -68% | -$14.7M |
|
336
SM Energy
SM
$7.7B
| $7.46M | 0.02% |
301,909
-399,528
| -57% | -$9.67M |
|
337
Intercorp Financial Services
IFS
$6.08B
| $7.15M | 0.02% |
187,534
+84,169
| +81% | +$2.89M |
|
|
RYZ
338
Ryerson Holding Corp
RYZ
$1.5B
| $7.15M | 0.02% |
331,475
-489,636
| -60% | -$10.6M |
|
339
Orion
OEC
$367M
| $6.64M | 0.02% |
633,446
-2,852,608
| -82% | -$32.3M |
|
340
Workday
WDAY
$43.1B
| $6.61M | 0.02% |
27,544
-985
| -3% | -$240K |
|
341
Atlassian
TEAM
$39.4B
| $6.53M | 0.02% |
32,150
-473,386
| -94% | -$98.6M |
|
342
Abbott
ABT
$192B
| $6.43M | 0.02% |
47,284
-23,203
| -33% | -$3.06M |
|
343
Pampa Energía
PAM
$4.29B
| $6.22M | 0.02% |
89,640
+5,450
| +6% | +$409K |
|
344
Watsco Inc
WSO
$12.7B
| $5.83M | 0.02% |
13,202
-15,635
| -54% | -$7.25M |
|
345
Coca-Cola Femsa
KOF
$23.1B
| $5.54M | 0.01% |
+57,258
| New | +$5.43M |
|
346
Dr. Reddy's Laboratories
RDY
$10.3B
| $5.49M | 0.01% |
365,494
| – | – |
|
347
BBVA Argentina
BBAR
$3.26B
| $5.49M | 0.01% |
333,654
+20,286
| +6% | +$388K |
|
348
Banco Santander Chile
BSAC
$16.1B
| $4.28M | 0.01% |
169,653
-61,251
| -27% | -$1.48M |
|
349
Millicom
TIGO
$16.2B
| $4.18M | 0.01% |
+111,655
| New | +$3.83M |
|
350
SAP
SAP
$235B
| $3.81M | 0.01% |
12,521
-3,277
| -21% | -$939K |
|
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GAM
VIA
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.