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William Blair Investment Management

William Blair Investment Management Portfolio holdings

AUM $33.3B
1-Year Est. Return 44.76%
This Fund
S&P 500
This Quarter Est. Return
+8.82%
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
$40.5B
AUM Growth
+$2.41B
Cap. Flow
+$166M
Cap. Flow %
0.41%
Top 10 Hldgs %
26.88%
Holding
451
New
40
Increased
141
Reduced
231
Closed
39

Top Buys

Rank Stock Value
1
META icon
Meta Platforms (Facebook)
META
+$732M
2
AAPL icon
Apple
AAPL
+$390M
3
TRU icon
TransUnion
TRU
+$198M
4
NVT icon
nVent Electric
NVT
+$164M
5
MANH icon
Manhattan Associates
MANH
+$159M

Top Sells

Rank Stock Value
1
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$1.17B
2
AXON
Axon Enterprise
AXON
+$211M
3
MMSI icon
Merit Medical Systems
MMSI
+$148M
4
BLDR icon
Builders FirstSource
BLDR
+$146M
5
TREX icon
Trex
TREX
+$144M

Sector Composition

Rank Sector Weight
1 Technology 34.33%
2 Consumer Discretionary 14.81%
3 Healthcare 14.4%
4 Financials 10.44%
5 Industrials 9.94%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
KLIC icon
226
Kulicke & Soffa
KLIC
$4.98B
$31.3M 0.08%
693,431
-21,060
-3% -$931K
OXM icon
227
Oxford Industries
OXM
$538M
$31.2M 0.08%
359,224
-11,043
-3% -$1.02M
MRK icon
228
Merck
MRK
$328B
$30.9M 0.08%
272,247
+33,950
+14% +$4.03M
ALRM icon
229
Alarm.com
ALRM
$2.72B
$30.9M 0.08%
564,431
-1,315,653
-70% -$80.8M
NWE icon
230
NorthWestern Energy
NWE
$4.34B
$30.8M 0.08%
538,700
-16,341
-3% -$873K
SNPS icon
231
Synopsys
SNPS
$79B
$30.7M 0.08%
60,682
-12,090
-17% -$6.49M
MOD icon
232
Modine Manufacturing
MOD
$10.6B
$30.5M 0.08%
+229,801
New +$25.4M
VITL icon
233
Vital Farms
VITL
$495M
$30.4M 0.07%
866,123
-213,380
-20% -$7.54M
IPAR icon
234
Interparfums
IPAR
$3.78B
$30.3M 0.07%
233,904
-623
-0.3% -$77.9K
SR icon
235
Spire
SR
$4.89B
$30.3M 0.07%
449,660
-13,592
-3% -$882K
SMP icon
236
Standard Motor Products
SMP
$877M
$30.2M 0.07%
910,633
-27,985
-3% -$873K
CACI icon
237
CACI
CACI
$15B
$30.2M 0.07%
+59,859
New +$27.7M
SBCF icon
238
Seacoast Banking Corp of Florida
SBCF
$3.44B
$30.2M 0.07%
1,132,357
-35,018
-3% -$924K
FRME icon
239
First Merchants
FRME
$2.72B
$29.8M 0.07%
800,717
-24,536
-3% -$908K
HWC icon
240
Hancock Whitney
HWC
$6.34B
$29.7M 0.07%
580,269
-17,780
-3% -$904K
DIOD icon
241
Diodes
DIOD
$4.93B
$29.7M 0.07%
462,953
-14,436
-3% -$1,000K
AAMI
242
Acadian Asset Management
AAMI
$3.27B
$29.6M 0.07%
1,164,037
-35,632
-3% -$854K
SITM icon
243
SiTime
SITM
$20.5B
$29.6M 0.07%
172,315
-35,783
-17% -$5.12M
AUB icon
244
Atlantic Union Bankshares
AUB
$6.06B
$29.1M 0.07%
773,800
+88,986
+13% +$3.35M
BLFS icon
245
BioLife Solutions
BLFS
$1.71B
$28.8M 0.07%
1,149,448
-422,122
-27% -$9.97M
USLM icon
246
United States Lime & Minerals
USLM
$3.42B
$28.7M 0.07%
294,140
+4,190
+1% +$336K
PDFS icon
247
PDF Solutions
PDFS
$2.19B
$28.6M 0.07%
902,277
+158,642
+21% +$5.15M
ANIP icon
248
ANI Pharmaceuticals
ANIP
$1.73B
$28.3M 0.07%
474,828
-14,558
-3% -$888K
WGO icon
249
Winnebago Industries
WGO
$915M
$28.1M 0.07%
483,949
-14,708
-3% -$842K
EEFT icon
250
Euronet Worldwide
EEFT
$2.66B
$28.1M 0.07%
282,695
-502,419
-64% -$50.8M
8 9
10
11 12

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William Blair Investment Management's Q3 2024 Portfolio in Review

As of Q3 2024, William Blair Investment Management held 451 positions worth $40.5B, up 6.3% from $38.1B the previous quarter. Its ten largest holdings account for 27% of the portfolio.

William Blair Investment Management's Q3 2024 filing shows 40 new, 141 increased, 231 reduced and 39 closed positions. Its largest new stake was nVent Electric: 2,380,715 shares worth $167M. The largest sale was Alphabet (Google) Class A, an estimated $1.17B.

By sector, the portfolio is most concentrated in Technology at 34% of assets, up from 34% a quarter earlier, followed by Consumer Discretionary and Healthcare.

  • William Blair Investment Management's largest Q3 2024 buy was nVent Electric: 2,380,715 shares worth $167M.
  • William Blair Investment Management added most to Meta Platforms (Facebook) in Q3 2024, an estimated $732M increase.
  • William Blair Investment Management's biggest Q3 2024 reduction was Alphabet (Google) Class A, cutting an estimated $1.17B.
  • William Blair Investment Management fully exited Axon Enterprise in Q3 2024, selling an estimated $211M.
  • William Blair Investment Management's ten largest holdings make up 27% of its $40.5B portfolio in Q3 2024.
  • William Blair Investment Management opened 40 new positions and closed 39 in Q3 2024.
  • William Blair Investment Management's portfolio value rose 6.3% quarter-over-quarter to $40.5B.

Based on William Blair Investment Management's 13F filing for Q3 2024, filed 8 Nov 2024.