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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 | |
|---|---|---|---|---|---|---|
351
Xtrackers Harvest CSI 300 China A-Shares ETF
ASHR
$1.6B
| $2.8M | 0.01% |
101,579
+13,479
| +15% | +$356K |
|
352
Unilever
UL
$133B
| $2.77M | 0.01% |
40,270
+7,027
| +21% | +$493K |
|
353
Humana
HUM
$46.7B
| $2.64M | 0.01% |
10,811
-3,017
| -22% | -$752K |
|
354
ASML
ASML
$695B
| $2.58M | 0.01% |
3,215
-1,000
| -24% | -$718K |
|
355
Banco Bilbao Vizcaya Argentaria
BBVA
$157B
| $2.42M | 0.01% |
157,462
+5,877
| +4% | +$84.7K |
|
356
iShares MSCI India ETF
INDA
$6.58B
| $2.41M | 0.01% |
43,200
| – | – |
|
357
AstraZeneca
AZN
$246B
| $2.3M | 0.01% |
16,439
+2,349
| +17% | +$329K |
|
358
Sumitomo Mitsui Financial
SMFG
$166B
| $1.98M | 0.01% |
131,226
-70,920
| -35% | -$1.02M |
|
359
Keysight
KEYS
$60.6B
| $1.97M | 0.01% |
12,028
-5,339
| -31% | -$814K |
|
|
LOMA
360
Loma Negra
LOMA
$1.13B
| $1.96M | 0.01% |
+179,109
| New | +$2.07M |
|
361
Zoetis
ZTS
$30.4B
| $1.95M | 0.01% |
12,501
-168,560
| -93% | -$26.7M |
|
362
RELX
RELX
$60.2B
| $1.93M | 0.01% |
35,461
-10,739
| -23% | -$568K |
|
363
Corteva
CTVA
$50.4B
| $1.58M | ﹤0.01% |
21,252
-9,868
| -32% | -$657K |
|
364
Trip.com Group
TCOM
$28.7B
| $1.37M | ﹤0.01% |
23,355
-15,713
| -40% | -$944K |
|
365
Shopify
SHOP
$194B
| $1.31M | ﹤0.01% |
11,352
-791,064
| -99% | -$79.1M |
|
366
Marvell Technology
MRVL
$195B
| $1.19M | ﹤0.01% |
15,403
+541
| +4% | +$33.8K |
|
367
iShares MSCI India Small-Cap ETF
SMIN
$771M
| $1.11M | ﹤0.01% |
14,442
+2,650
| +22% | +$191K |
|
|
BPMC
368
DELISTED
Blueprint Medicines
BPMC
| $1.1M | ﹤0.01% |
8,574
-1,421,094
| -99% | -$148M |
|
369
WisdomTree India Earnings Fund ETF
EPI
$2.04B
| $997K | ﹤0.01% |
21,000
| – | – |
|
|
GTLS
370
DELISTED
Chart Industries
GTLS
| $675K | ﹤0.01% |
4,100
-1,038,346
| -100% | -$153M |
|
371
Acadia Healthcare
ACHC
$2.95B
| $529K | ﹤0.01% |
23,309
-4,375,246
| -99% | -$104M |
|
372
Flex
FLEX
$46B
| $522K | ﹤0.01% |
10,460
-2,207
| -17% | -$86K |
|
373
Amdocs
DOX
$6.08B
| $516K | ﹤0.01% |
5,650
+133
| +2% | +$11.9K |
|
374
Allegion
ALLE
$14.1B
| $510K | ﹤0.01% |
3,542
-57
| -2% | -$7.79K |
|
375
Crown Holdings
CCK
$13.1B
| $495K | ﹤0.01% |
4,811
-78
| -2% | -$7.43K |
|
Similar funds
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.