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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
COST icon
76
Costco
COST
$419B
$175M 0.47%
308,908
+94,552
+44% +$48.4M
BBBY
77
Bed Bath & Beyond
BBBY
$407M
$175M 0.47%
3,259,786
+190,127
+6% +$14.4M
VRNS icon
78
Varonis Systems
VRNS
$4.84B
$173M 0.47%
3,536,585
-89,120
-2% -$5.08M
ZNGA
79
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
$169M 0.46%
26,343,092
+8,229,034
+45% +$56.8M
LECO icon
80
Lincoln Electric
LECO
$15.5B
$166M 0.45%
1,189,367
-14,104
-1% -$1.96M
VCYT icon
81
Veracyte
VCYT
$3.73B
$162M 0.44%
3,943,073
-53,139
-1% -$2.35M
KRNT icon
82
Kornit Digital
KRNT
$815M
$159M 0.43%
1,043,608
+686,870
+193% +$106M
TXG icon
83
10x Genomics
TXG
$7.62B
$159M 0.43%
1,066,422
-43,464
-4% -$6.66M
HQY icon
84
HealthEquity
HQY
$8.83B
$158M 0.43%
3,568,161
-201,638
-5% -$11.7M
CERT icon
85
Certara
CERT
$1.24B
$157M 0.43%
5,540,678
+1,034,482
+23% +$34.8M
HHR
86
DELISTED
HeadHunter Group PLC American Depositary Shares
HHR
$157M 0.42%
3,068,713
+103,984
+4% +$5.66M
CPRT icon
87
Copart
CPRT
$27.2B
$156M 0.42%
4,127,976
+462,740
+13% +$17.2M
NVDA icon
88
NVIDIA
NVDA
$5.27T
$152M 0.41%
5,158,930
+2,462,900
+91% +$67.8M
SKIN icon
89
SkinHealth Systems
SKIN
$91.1M
$151M 0.41%
6,251,906
+4,370,217
+232% +$113M
NFLX icon
90
Netflix
NFLX
$311B
$137M 0.37%
+2,270,340
New +$145M
INTU icon
91
Intuit
INTU
$92B
$137M 0.37%
212,555
+45,645
+27% +$28.2M
INSM icon
92
Insmed
INSM
$29B
$134M 0.36%
4,914,140
-61,901
-1% -$1.77M
SBUX icon
93
Starbucks
SBUX
$122B
$133M 0.36%
1,140,735
+422,496
+59% +$47.6M
PEGA icon
94
Pegasystems
PEGA
$5.44B
$133M 0.36%
2,378,470
-150,026
-6% -$8.88M
CELH icon
95
Celsius Holdings
CELH
$7.11B
$132M 0.36%
5,303,481
+520,755
+11% +$14.4M
SYK icon
96
Stryker
SYK
$134B
$127M 0.34%
475,543
+130,683
+38% +$34.3M
WOLF icon
97
Wolfspeed
WOLF
$1.57B
$126M 0.34%
1,128,400
-284,339
-20% -$31.7M
TXN icon
98
Texas Instruments
TXN
$257B
$124M 0.34%
659,880
+150,290
+29% +$28.9M
TWST icon
99
Twist Bioscience
TWST
$7.72B
$124M 0.34%
1,606,330
+408,746
+34% +$42M
MAR icon
100
Marriott International
MAR
$91.1B
$121M 0.33%
734,615
+209,208
+40% +$32.9M
2 3
4
5 6

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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.