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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
+5.73%
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
$37B
AUM Growth
+$1.55B
Cap. Flow
+$474M
Cap. Flow %
1.28%
Top 10 Hldgs %
16.63%
Holding
465
New
34
Increased
192
Reduced
193
Closed
38

Top Buys

Rank Stock Value
1
MSFT icon
Microsoft
MSFT
+$206M
2
AMZN icon
Amazon
AMZN
+$159M
3
NFLX icon
Netflix
NFLX
+$145M
4
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$127M
5
SKIN icon
SkinHealth Systems
SKIN
+$113M

Top Sells

Rank Stock Value
1
PODD icon
Insulet
PODD
+$218M
2
EHC icon
Encompass Health
EHC
+$200M
3
FCFS icon
FirstCash
FCFS
+$170M
4
GDDY icon
GoDaddy
GDDY
+$167M
5
ZEN
ZENDESK INC
ZEN
+$156M

Sector Composition

Rank Sector Weight
1 Technology 26.95%
2 Healthcare 17.95%
3 Consumer Discretionary 15.98%
4 Industrials 14.09%
5 Financials 7.71%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
BAP icon
151
Credicorp
BAP
$30.2B
$54.8M 0.15%
449,032
+25,541
+6% +$3.13M
CWST icon
152
Casella Waste Systems
CWST
$5.92B
$53.3M 0.14%
623,647
-162,781
-21% -$13.6M
SMP icon
153
Standard Motor Products
SMP
$891M
$52.8M 0.14%
1,006,957
-85,488
-8% -$4.29M
ECPG icon
154
Encore Capital Group
ECPG
$2.03B
$52.5M 0.14%
845,257
+95,158
+13% +$5.36M
MEI icon
155
Methode Electronics
MEI
$595M
$52.2M 0.14%
1,061,103
-97,034
-8% -$4.37M
KRG icon
156
Kite Realty
KRG
$5.24B
$51.6M 0.14%
2,370,490
-191,529
-7% -$4.1M
GDYN icon
157
Grid Dynamics Holdings
GDYN
$625M
$51.4M 0.14%
1,354,315
-88,710
-6% -$3.07M
ROP icon
158
Roper Technologies
ROP
$38.8B
$51.4M 0.14%
104,541
+13,661
+15% +$6.5M
CDXS icon
159
Codexis
CDXS
$177M
$51.1M 0.14%
1,634,837
-736,360
-31% -$24.2M
ARGO
160
DELISTED
Argo Group International Holdings, Ltd.
ARGO
$50.9M 0.14%
876,442
-70,079
-7% -$3.95M
MTDR icon
161
Matador Resources
MTDR
$6.48B
$50.7M 0.14%
1,372,476
-739,759
-35% -$30.3M
MTRN icon
162
Materion
MTRN
$5.96B
$49.6M 0.13%
539,369
-47,087
-8% -$3.92M
HUBG icon
163
HUB Group
HUBG
$2.39B
$49.6M 0.13%
1,176,650
-96,502
-8% -$3.84M
ERII icon
164
Energy Recovery
ERII
$400M
$49.1M 0.13%
2,283,424
+977,186
+75% +$20.4M
DBI icon
165
Designer Brands
DBI
$315M
$48.8M 0.13%
3,434,292
-278,039
-7% -$3.98M
LHCG
166
DELISTED
LHC Group LLC
LHCG
$48.7M 0.13%
355,050
+98,094
+38% +$13.4M
CBZ icon
167
CBIZ
CBZ
$2.96B
$48.2M 0.13%
1,231,734
-110,554
-8% -$4.12M
GPRE icon
168
Green Plains
GPRE
$1.08B
$48.1M 0.13%
1,382,480
-115,305
-8% -$4.29M
WLY icon
169
John Wiley & Sons Class A
WLY
$2.49B
$47.9M 0.13%
836,814
-73,785
-8% -$3.99M
GOOS
170
Canada Goose Holdings
GOOS
$844M
$47.8M 0.13%
1,288,845
-32,530
-2% -$1.33M
PLD icon
171
Prologis
PLD
$132B
$47.4M 0.13%
281,309
-612
-0.2% -$91.3K
KN icon
172
Knowles
KN
$3.34B
$46.9M 0.13%
2,010,075
+29,646
+1% +$626K
PRGS icon
173
Progress Software
PRGS
$1.75B
$46.7M 0.13%
968,185
-84,646
-8% -$4.21M
HI
174
DELISTED
Hillenbrand
HI
$46.4M 0.13%
892,067
-74,927
-8% -$3.58M
UMH
175
UMH Properties
UMH
$1.38B
$46M 0.12%
1,683,975
-141,709
-8% -$3.41M
5 6
7
8 9

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William Blair Investment Management's Q4 2021 Portfolio in Review

As of Q4 2021, William Blair Investment Management held 465 positions worth $37B, up 4.4% from $35.5B the previous quarter. Its ten largest holdings account for 17% of the portfolio.

William Blair Investment Management's Q4 2021 filing shows 34 new, 192 increased, 193 reduced and 38 closed positions. Its largest new stake was Netflix: 2,270,340 shares worth $137M. The largest sale was Insulet, an estimated $218M.

By sector, the portfolio is most concentrated in Technology at 27% of assets, up from 25% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • William Blair Investment Management's largest Q4 2021 buy was Netflix: 2,270,340 shares worth $137M.
  • William Blair Investment Management added most to Microsoft in Q4 2021, an estimated $206M increase.
  • William Blair Investment Management's biggest Q4 2021 reduction was Encompass Health, cutting an estimated $200M.
  • William Blair Investment Management fully exited Insulet in Q4 2021, selling an estimated $218M.
  • William Blair Investment Management's ten largest holdings make up 17% of its $37B portfolio in Q4 2021.
  • William Blair Investment Management opened 34 new positions and closed 38 in Q4 2021.
  • William Blair Investment Management's portfolio value rose 4.4% quarter-over-quarter to $37B.

Based on William Blair Investment Management's 13F filing for Q4 2021, filed 14 Feb 2022.