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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
+11.26%
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
$28.7B
AUM Growth
+$2.56B
Cap. Flow
+$530M
Cap. Flow %
1.85%
Top 10 Hldgs %
19.55%
Holding
425
New
24
Increased
254
Reduced
112
Closed
32

Top Buys

Rank Stock Value
1
RACE icon
Ferrari
RACE
+$191M
2
TSM icon
TSMC
TSM
+$128M
3
KOS icon
Kosmos Energy
KOS
+$111M
4
FIVE icon
Five Below
FIVE
+$111M
5
AMD icon
Advanced Micro Devices
AMD
+$86.5M

Top Sells

Rank Stock Value
1
HALO icon
Halozyme
HALO
+$211M
2
SYK icon
Stryker
SYK
+$153M
3
WH icon
Wyndham Hotels & Resorts
WH
+$113M
4
FTI icon
TechnipFMC
FTI
+$92.8M
5
AZTA icon
Azenta
AZTA
+$78.7M

Sector Composition

Rank Sector Weight
1 Technology 25.27%
2 Industrials 16.92%
3 Consumer Discretionary 15.22%
4 Healthcare 14.65%
5 Financials 9.04%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
ABM icon
151
ABM Industries
ABM
$2.84B
$39.8M 0.14%
885,984
+2,359
+0.3% +$109K
BRC icon
152
Brady Corp
BRC
$4.48B
$39.6M 0.14%
736,488
+2,698
+0.4% +$141K
IDA icon
153
Idacorp
IDA
$8.21B
$39M 0.14%
360,367
+47,670
+15% +$5.01M
SIG icon
154
Signet Jewelers
SIG
$3.6B
$38.9M 0.14%
500,391
+46,412
+10% +$3.44M
GSHD icon
155
Goosehead Insurance
GSHD
$2.33B
$38.6M 0.13%
739,154
+250,480
+51% +$10.9M
LZB icon
156
La-Z-Boy
LZB
$1.64B
$38.1M 0.13%
1,310,508
+9,051
+0.7% +$257K
HUBG icon
157
HUB Group
HUBG
$2.46B
$38M 0.13%
906,284
+2,922
+0.3% +$127K
CBRL icon
158
Cracker Barrel
CBRL
$1.31B
$37.8M 0.13%
332,720
+97,673
+42% +$10.7M
IDXX icon
159
Idexx Laboratories
IDXX
$45B
$37.7M 0.13%
75,320
-2,379
-3% -$1.14M
IPAR icon
160
Interparfums
IPAR
$3.78B
$37.5M 0.13%
263,609
+34,836
+15% +$4.29M
SMP icon
161
Standard Motor Products
SMP
$877M
$37.5M 0.13%
1,015,027
+5,553
+0.6% +$211K
MYE icon
162
Myers Industries
MYE
$1.23B
$37.4M 0.13%
1,746,829
+334,207
+24% +$7.6M
MMS icon
163
Maximus
MMS
$2.85B
$37.2M 0.13%
472,939
+1,645
+0.3% +$127K
ICE icon
164
Intercontinental Exchange
ICE
$85B
$36.9M 0.13%
353,761
-10,430
-3% -$1.09M
TEX icon
165
Terex
TEX
$7.8B
$36.6M 0.13%
756,706
-270,392
-26% -$13.8M
CBZ icon
166
CBIZ
CBZ
$2.96B
$36.5M 0.13%
737,864
-143,641
-16% -$6.92M
WERN icon
167
Werner Enterprises
WERN
$2.27B
$36.5M 0.13%
802,287
+2,462
+0.3% +$112K
MTX icon
168
Minerals Technologies
MTX
$2.25B
$36M 0.13%
596,629
+69,867
+13% +$4.35M
BDC icon
169
Belden
BDC
$5.39B
$36M 0.13%
414,407
-332,702
-45% -$27.6M
CSGS
170
DELISTED
CSG Systems International
CSGS
$35.7M 0.12%
665,260
+130,947
+25% +$7.45M
URBN icon
171
Urban Outfitters
URBN
$6.63B
$35.7M 0.12%
1,287,936
-359,389
-22% -$9.67M
ELS icon
172
Equity Lifestyle Properties
ELS
$12.4B
$35.7M 0.12%
531,703
+144,515
+37% +$9.81M
CODI icon
173
Compass Diversified
CODI
$909M
$35.5M 0.12%
1,861,906
+392,572
+27% +$8.04M
CRI icon
174
Carter's
CRI
$1.43B
$35.4M 0.12%
492,178
+1,023
+0.2% +$78.3K
INVX
175
Innovex International
INVX
$2.12B
$35.4M 0.12%
1,232,567
+7,191
+0.6% +$213K
5 6
7
8 9

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William Blair Investment Management's Q1 2023 Portfolio in Review

As of Q1 2023, William Blair Investment Management held 425 positions worth $28.7B, up 9.8% from $26.1B the previous quarter. Its ten largest holdings account for 20% of the portfolio.

William Blair Investment Management's Q1 2023 filing shows 24 new, 254 increased, 112 reduced and 32 closed positions. Its largest new stake was Ferrari: 749,761 shares worth $203M. The largest sale was Halozyme, an estimated $211M.

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

  • William Blair Investment Management's largest Q1 2023 buy was Ferrari: 749,761 shares worth $203M.
  • William Blair Investment Management added most to TSMC in Q1 2023, an estimated $128M increase.
  • William Blair Investment Management's biggest Q1 2023 reduction was Wyndham Hotels & Resorts, cutting an estimated $113M.
  • William Blair Investment Management fully exited Halozyme in Q1 2023, selling an estimated $211M.
  • William Blair Investment Management's ten largest holdings make up 20% of its $28.7B portfolio in Q1 2023.
  • William Blair Investment Management opened 24 new positions and closed 32 in Q1 2023.
  • William Blair Investment Management's portfolio value rose 9.8% quarter-over-quarter to $28.7B.

Based on William Blair Investment Management's 13F filing for Q1 2023, filed 12 May 2023.