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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
-0.67%
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
$25.3B
AUM Growth
-$1.68B
Cap. Flow
-$904M
Cap. Flow %
-3.57%
Top 10 Hldgs %
17.26%
Holding
421
New
18
Increased
147
Reduced
220
Closed
34

Top Buys

Rank Stock Value
1
CP icon
Canadian Pacific Kansas City
CP
+$223M
2
EHC icon
Encompass Health
EHC
+$216M
3
FTI icon
TechnipFMC
FTI
+$115M
4
POOL icon
Pool Corp
POOL
+$110M
5
MLM icon
Martin Marietta Materials
MLM
+$75.9M

Top Sells

Rank Stock Value
1
CNI icon
Canadian National Railway
CNI
+$256M
2
TEAM icon
Atlassian
TEAM
+$172M
3
NVDA icon
NVIDIA
NVDA
+$133M
4
AVLR
Avalara, Inc.
AVLR
+$127M
5
WOOF icon
Petco
WOOF
+$112M

Sector Composition

Rank Sector Weight
1 Technology 22.56%
2 Healthcare 18.06%
3 Industrials 16.24%
4 Consumer Discretionary 13.94%
5 Financials 10.86%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
INSM icon
101
Insmed
INSM
$29B
$76.6M 0.3%
3,556,584
+29,495
+0.8% +$707K
VRRM icon
102
Verra Mobility
VRRM
$717M
$75.2M 0.3%
4,895,762
+233,974
+5% +$3.8M
ACH
103
Accendra Health
ACH
$93.8M
$73.8M 0.29%
3,060,832
+309,361
+11% +$9.53M
BPMC
104
DELISTED
Blueprint Medicines
BPMC
$70.8M 0.28%
1,074,284
+9,156
+0.9% +$588K
PXD
105
DELISTED
Pioneer Natural Resource Co.
PXD
$69.6M 0.28%
+321,592
New +$73.5M
TWST icon
106
Twist Bioscience
TWST
$7.72B
$69.6M 0.28%
1,974,385
-743,000
-27% -$31.6M
AIN icon
107
Albany International
AIN
$1.82B
$68.2M 0.27%
865,587
+9,062
+1% +$779K
CERT icon
108
Certara
CERT
$1.23B
$67.7M 0.27%
5,097,996
-277,158
-5% -$5.12M
PLNT icon
109
Planet Fitness
PLNT
$3.64B
$66.9M 0.26%
1,159,848
+2,787
+0.2% +$201K
ULTA icon
110
Ulta Beauty
ULTA
$23B
$66.6M 0.26%
165,901
-5,447
-3% -$2.19M
RYAAY icon
111
Ryanair
RYAAY
$30.9B
$64.7M 0.26%
2,771,463
-3,736,167
-57% -$105M
CELH icon
112
Celsius Holdings
CELH
$6.98B
$63.2M 0.25%
2,089,380
-2,525,379
-55% -$79.1M
EFX icon
113
Equifax
EFX
$21.3B
$62.9M 0.25%
366,992
-130,097
-26% -$25.5M
TMO icon
114
Thermo Fisher Scientific
TMO
$223B
$62.4M 0.25%
122,968
-3,095
-2% -$1.73M
ERII icon
115
Energy Recovery
ERII
$402M
$55.3M 0.22%
2,542,209
+121,010
+5% +$2.72M
UNP icon
116
Union Pacific
UNP
$174B
$55.2M 0.22%
283,400
-7,661
-3% -$1.7M
WDAY icon
117
Workday
WDAY
$43B
$53.7M 0.21%
352,921
+37,184
+12% +$5.82M
BDC icon
118
Belden
BDC
$5.39B
$51.6M 0.2%
859,036
-113,982
-12% -$7.25M
AMD icon
119
Advanced Micro Devices
AMD
$790B
$50.6M 0.2%
799,032
-16,215
-2% -$1.38M
DLO icon
120
dLocal
DLO
$4.17B
$48.9M 0.19%
2,383,345
-303,549
-11% -$8.07M
NEE icon
121
NextEra Energy
NEE
$178B
$48.4M 0.19%
617,169
+8,972
+1% +$761K
MTDR icon
122
Matador Resources
MTDR
$6.47B
$46.2M 0.18%
943,606
-195,310
-17% -$10.5M
SNPS icon
123
Synopsys
SNPS
$79B
$45.7M 0.18%
149,434
-42,503
-22% -$14.4M
OEC icon
124
Orion
OEC
$367M
$43.3M 0.17%
3,244,808
-629,117
-16% -$10.2M
INMD icon
125
InMode
INMD
$878M
$42.7M 0.17%
1,465,952
-422,841
-22% -$13.1M
3 4
5
6 7

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William Blair Investment Management's Q3 2022 Portfolio in Review

As of Q3 2022, William Blair Investment Management held 421 positions worth $25.3B, down 6.2% from $27B the previous quarter. Its ten largest holdings account for 17% of the portfolio.

William Blair Investment Management withdrew a net $904M in Q3 2022, closing 34 positions and reducing 220 holdings. Its most notable exit was Atlassian, an estimated $172M position sold in full.

By sector, the portfolio is most concentrated in Technology at 23% of assets, down from 25% a quarter earlier, followed by Healthcare and Industrials.

Against the trend, William Blair Investment Management opened a new position in Pioneer Natural Resource Co. worth $69.6M.

  • William Blair Investment Management's largest Q3 2022 buy was Pioneer Natural Resource Co.: 321,592 shares worth $69.6M.
  • William Blair Investment Management added most to Canadian Pacific Kansas City in Q3 2022, an estimated $223M increase.
  • William Blair Investment Management's biggest Q3 2022 reduction was Canadian National Railway, cutting an estimated $256M.
  • William Blair Investment Management fully exited Atlassian in Q3 2022, selling an estimated $172M.
  • William Blair Investment Management's ten largest holdings make up 17% of its $25.3B portfolio in Q3 2022.
  • William Blair Investment Management opened 18 new positions and closed 34 in Q3 2022.
  • William Blair Investment Management's portfolio value fell 6.2% quarter-over-quarter to $25.3B.

Based on William Blair Investment Management's 13F filing for Q3 2022, filed 9 Nov 2022.