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William Blair Investment Management

William Blair Investment Management Portfolio holdings

AUM $30.3B
1-Year Est. Return 33.75%
This Fund
S&P 500
This Quarter Est. Return
+9.84%
1 Year Est. Return
+33.75%
3 Year Est. Return
+108.55%
5 Year Est. Return
+126.9%
10 Year Est. Return
+788.31%
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
WDAY icon
151
Workday
WDAY
$44.8B
$43.1M 0.14%
190,612
-25,390
-12% -$5.09M
CRI icon
152
Carter's
CRI
$1.46B
$43M 0.14%
592,975
+100,797
+20% +$6.81M
GXO icon
153
GXO Logistics
GXO
$5.37B
$42.8M 0.14%
681,004
+244,339
+56% +$13.7M
ODFL icon
154
Old Dominion Freight Line
ODFL
$43.4B
$42.3M 0.14%
228,910
+83,862
+58% +$13.6M
TMHC
155
DELISTED
Taylor Morrison
TMHC
$42M 0.13%
861,959
-282,226
-25% -$12.2M
ELS icon
156
Equity Lifestyle Properties
ELS
$12.4B
$41.7M 0.13%
623,818
+92,115
+17% +$6.13M
TPH
157
DELISTED
Tri Pointe Homes
TPH
$41.4M 0.13%
1,261,040
-387,380
-24% -$11.3M
CODI icon
158
Compass Diversified
CODI
$927M
$41.1M 0.13%
1,895,620
+33,714
+2% +$670K
MTG icon
159
MGIC Investment
MTG
$6.23B
$40.9M 0.13%
2,588,929
+47,597
+2% +$706K
MMS icon
160
Maximus
MMS
$2.84B
$40.7M 0.13%
481,852
+8,913
+2% +$733K
ICE icon
161
Intercontinental Exchange
ICE
$84.9B
$40.5M 0.13%
358,514
+4,753
+1% +$515K
BOOT icon
162
Boot Barn
BOOT
$5.02B
$40.5M 0.13%
477,754
+31,357
+7% +$2.3M
BDC icon
163
Belden
BDC
$5.26B
$40.4M 0.13%
422,293
+7,886
+2% +$675K
CBZ icon
164
CBIZ
CBZ
$2.96B
$40.1M 0.13%
752,151
+14,287
+2% +$735K
ZIP icon
165
ZipRecruiter
ZIP
$405M
$39.3M 0.13%
2,213,243
+144,587
+7% +$2.38M
HR icon
166
Healthcare Realty
HR
$6.56B
$38.9M 0.12%
2,062,029
+299,615
+17% +$5.79M
SMP icon
167
Standard Motor Products
SMP
$889M
$38.8M 0.12%
1,034,234
+19,207
+2% +$701K
CVX icon
168
Chevron
CVX
$386B
$38.6M 0.12%
+245,536
New +$39.4M
ABM icon
169
ABM Industries
ABM
$2.83B
$38.5M 0.12%
902,633
+16,649
+2% +$721K
NTCT icon
170
NETSCOUT
NTCT
$2.81B
$38.3M 0.12%
1,237,998
+22,775
+2% +$669K
LOPE icon
171
Grand Canyon Education
LOPE
$3.76B
$38.3M 0.12%
370,759
-111,928
-23% -$12.3M
LZB icon
172
La-Z-Boy
LZB
$1.66B
$38.2M 0.12%
1,335,433
+24,925
+2% +$696K
ATKR icon
173
Atkore
ATKR
$3.17B
$38.2M 0.12%
+244,797
New +$32.1M
IDXX icon
174
Idexx Laboratories
IDXX
$46.2B
$37.7M 0.12%
75,041
-279
-0.4% -$134K
SP
175
DELISTED
SP Plus Corporation
SP
$37.4M 0.12%
956,821
+17,682
+2% +$636K
5 6
7
8 9

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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.