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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
+9.84%
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
$31.2B
AUM Growth
+$2.49B
Cap. Flow
+$357M
Cap. Flow %
1.14%
Top 10 Hldgs %
20.4%
Holding
426
New
33
Increased
232
Reduced
127
Closed
31

Top Buys

Rank Stock Value
1
TECH icon
Bio-Techne
TECH
+$186M
2
TYL icon
Tyler Technologies
TYL
+$171M
3
NVDA icon
NVIDIA
NVDA
+$167M
4
NOW icon
ServiceNow
NOW
+$128M
5
BFAM icon
Bright Horizons
BFAM
+$109M

Top Sells

Rank Stock Value
1
PD icon
PagerDuty
PD
+$171M
2
BLDR icon
Builders FirstSource
BLDR
+$157M
3
PYPL icon
PayPal
PYPL
+$135M
4
NATI
National Instruments Corp
NATI
+$122M
5
LECO icon
Lincoln Electric
LECO
+$116M

Sector Composition

Rank Sector Weight
1 Technology 25.63%
2 Industrials 16.13%
3 Healthcare 15.71%
4 Consumer Discretionary 14.7%
5 Financials 8.24%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
KOS icon
126
Kosmos Energy
KOS
$1.52B
$60.7M 0.19%
10,139,062
-5,081,035
-33% -$33.1M
BURL icon
127
Burlington
BURL
$22.6B
$59.8M 0.19%
380,046
-65,429
-15% -$11.2M
INMD icon
128
InMode
INMD
$870M
$54.6M 0.18%
1,462,396
-41,043
-3% -$1.43M
ITGR icon
129
Integer Holdings
ITGR
$4.25B
$54.1M 0.17%
610,791
+11,380
+2% +$932K
ITUB icon
130
Itaú Unibanco
ITUB
$82.7B
$53.6M 0.17%
10,292,952
+599,931
+6% +$2.84M
META icon
131
Meta Platforms (Facebook)
META
$1.53T
$52.9M 0.17%
184,200
-23,814
-11% -$5.88M
GPRE icon
132
Green Plains
GPRE
$1.09B
$52.1M 0.17%
1,617,504
+112,546
+7% +$3.56M
PGTI
133
DELISTED
PGT, Inc.
PGTI
$51.6M 0.17%
1,769,561
+32,782
+2% +$863K
GSHD icon
134
Goosehead Insurance
GSHD
$2.32B
$50.8M 0.16%
807,870
+68,716
+9% +$3.95M
OEC icon
135
Orion
OEC
$377M
$49.6M 0.16%
2,337,014
-638,293
-21% -$15.4M
COLD icon
136
Americold
COLD
$4.13B
$49.5M 0.16%
1,532,735
+318,567
+26% +$9.49M
KRG icon
137
Kite Realty
KRG
$5.24B
$48.3M 0.16%
2,163,851
+39,722
+2% +$819K
TMO icon
138
Thermo Fisher Scientific
TMO
$224B
$47.4M 0.15%
90,791
+1,235
+1% +$666K
MDRX
139
DELISTED
Veradigm Inc. Common Stock
MDRX
$47.3M 0.15%
3,751,567
+327,836
+10% +$3.98M
BLMN icon
140
Bloomin' Brands
BLMN
$952M
$46.8M 0.15%
1,741,498
+32,016
+2% +$802K
KLIC icon
141
Kulicke & Soffa
KLIC
$4.76B
$46.6M 0.15%
783,763
+14,811
+2% +$764K
TEX icon
142
Terex
TEX
$7.74B
$46.1M 0.15%
771,091
+14,385
+2% +$714K
ASR icon
143
Grupo Aeroportuario del Sureste
ASR
$8.15B
$45.6M 0.15%
164,263
-16,535
-9% -$4.77M
GVA icon
144
Granite Construction
GVA
$5.49B
$45.5M 0.15%
1,144,430
+21,361
+2% +$817K
FROG icon
145
JFrog
FROG
$10.4B
$45.2M 0.14%
1,631,078
+1,047,250
+179% +$23.9M
HI
146
DELISTED
Hillenbrand
HI
$44.9M 0.14%
875,297
+15,502
+2% +$746K
KN icon
147
Knowles
KN
$3.29B
$44.6M 0.14%
2,468,974
+45,736
+2% +$769K
BERY
148
DELISTED
Berry Global Group, Inc.
BERY
$44.4M 0.14%
751,009
+377,689
+101% +$20.6M
IDA icon
149
Idacorp
IDA
$8.11B
$43.2M 0.14%
421,076
+60,709
+17% +$6.53M
PBF icon
150
PBF Energy
PBF
$8.22B
$43.2M 0.14%
1,054,623
+288,130
+38% +$10.9M
4 5
6
7 8

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William Blair Investment Management's Q2 2023 Portfolio in Review

As of Q2 2023, William Blair Investment Management held 426 positions worth $31.2B, up 8.7% from $28.7B the previous quarter. Its ten largest holdings account for 20% of the portfolio.

William Blair Investment Management's Q2 2023 filing shows 33 new, 232 increased, 127 reduced and 31 closed positions. Its largest new stake was Bio-Techne: 2,314,458 shares worth $189M. The largest sale was PagerDuty, an estimated $171M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, up from 25% a quarter earlier, followed by Industrials and Healthcare.

  • William Blair Investment Management's largest Q2 2023 buy was Bio-Techne: 2,314,458 shares worth $189M.
  • William Blair Investment Management added most to NVIDIA in Q2 2023, an estimated $167M increase.
  • William Blair Investment Management's biggest Q2 2023 reduction was Builders FirstSource, cutting an estimated $157M.
  • William Blair Investment Management fully exited PagerDuty in Q2 2023, selling an estimated $171M.
  • William Blair Investment Management's ten largest holdings make up 20% of its $31.2B portfolio in Q2 2023.
  • William Blair Investment Management opened 33 new positions and closed 31 in Q2 2023.
  • William Blair Investment Management's portfolio value rose 8.7% quarter-over-quarter to $31.2B.

Based on William Blair Investment Management's 13F filing for Q2 2023, filed 11 Aug 2023.