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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
NTGR icon
451
NETGEAR
NTGR
$658M
– –
-1,214,575
Closed -$38.8M
NVST icon
452
Envista
NVST
$4.61B
– –
-7,175
Closed -$300K
PAR icon
453
PAR Technology
PAR
$741M
– –
-104,227
Closed -$6.41M
PINC
454
DELISTED
Premier
PINC
– –
-10,848
Closed -$420K
PODD icon
455
Insulet
PODD
$10.1B
– –
-767,661
Closed -$218M
PRCH icon
456
Porch Group
PRCH
$1.83B
– –
-871,884
Closed -$15.4M
ROK icon
457
Rockwell Automation
ROK
$50.1B
– –
-33,984
Closed -$9.99M
SASR
458
DELISTED
Sandy Spring Bancorp Inc
SASR
– –
-806,163
Closed -$36.9M
FBMS
459
DELISTED
The First Bancshares, Inc.
FBMS
– –
-763,006
Closed -$29.6M
ZEN
460
DELISTED
ZENDESK INC
ZEN
– –
-1,343,577
Closed -$156M
TMX
461
DELISTED
Terminix Global Holdings, Inc.
TMX
– –
-3,564,167
Closed -$149M
COR
462
DELISTED
Coresite Realty Corporation
COR
– –
-138,569
Closed -$19.2M
CCMP
463
DELISTED
CMC Materials, Inc. Common Stock
CCMP
– –
-242,796
Closed -$29.9M
ATVI
464
DELISTED
Activision Blizzard
ATVI
– –
-750,056
Closed -$58M
OZON
465
DELISTED
Ozon Holdings PLC American Depositary Shares, each ADS representing one ordinary share
OZON
– –
-637,322
Closed -$32.2M
15 16 17 18
19

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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.