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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
CRM icon
51
Salesforce
CRM
$162B
$240M 0.65%
945,676
+220,837
+30% +$62.1M
EYE icon
52
National Vision
EYE
$1.77B
$236M 0.64%
4,920,741
+1,087,551
+28% +$58.2M
NKE icon
53
Nike
NKE
$61.3B
$231M 0.62%
1,383,700
+352,659
+34% +$58.2M
CHE icon
54
Chemed
CHE
$7.02B
$222M 0.6%
418,761
+76,904
+22% +$36.9M
LGND icon
55
Ligand Pharmaceuticals
LGND
$5.76B
$216M 0.58%
2,244,747
+39,114
+2% +$3.61M
ENTG icon
56
Entegris
ENTG
$23B
$214M 0.58%
1,541,682
-25,233
-2% -$3.53M
RVLV icon
57
Revolve Group
RVLV
$1.69B
$210M 0.57%
3,744,966
+466,908
+14% +$32.8M
MMSI icon
58
Merit Medical Systems
MMSI
$5.44B
$209M 0.57%
3,357,638
-25,024
-0.7% -$1.68M
HDB icon
59
HDFC Bank
HDB
$120B
$204M 0.55%
6,275,222
+728,614
+13% +$25.5M
HALO icon
60
Halozyme
HALO
$11.6B
$204M 0.55%
5,073,665
+76,957
+2% +$2.87M
INSP icon
61
Inspire Medical Systems
INSP
$1.71B
$203M 0.55%
884,191
-11,785
-1% -$2.88M
EL icon
62
Estee Lauder
EL
$31.8B
$202M 0.55%
545,092
+96,251
+21% +$32.7M
ZTS icon
63
Zoetis
ZTS
$31.1B
$198M 0.54%
811,523
+117,563
+17% +$25.8M
RBA icon
64
RB Global
RBA
$16.6B
$196M 0.53%
3,204,804
-42,402
-1% -$2.84M
ADBE icon
65
Adobe
ADBE
$105B
$194M 0.53%
342,616
+51,249
+18% +$32M
FSV icon
66
FirstService
FSV
$6.3B
$192M 0.52%
976,567
-15,060
-2% -$2.91M
NATI
67
DELISTED
National Instruments Corp
NATI
$192M 0.52%
4,391,377
+117,013
+3% +$4.97M
WK icon
68
Workiva
WK
$3.76B
$191M 0.52%
1,467,050
+328,993
+29% +$46.4M
AVLR
69
DELISTED
Avalara, Inc.
AVLR
$190M 0.51%
1,469,819
+226,160
+18% +$35.3M
CABO icon
70
Cable One
CABO
$192M
$189M 0.51%
106,934
-3,083
-3% -$5.47M
ACN icon
71
Accenture
ACN
$110B
$187M 0.51%
451,883
+121,340
+37% +$44.2M
BPMC
72
DELISTED
Blueprint Medicines
BPMC
$187M 0.51%
1,747,721
+30,557
+2% +$3.2M
AMD icon
73
Advanced Micro Devices
AMD
$774B
$186M 0.5%
1,291,761
+111,273
+9% +$15M
MRCY icon
74
Mercury Systems
MRCY
$6.55B
$183M 0.49%
3,317,822
-30,390
-0.9% -$1.54M
NOVT icon
75
Novanta
NOVT
$6.34B
$182M 0.49%
1,031,354
+37,826
+4% +$6.32M
1 2
3
4 5

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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.