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William Blair & Company

William Blair & Company Portfolio holdings

AUM $34.9B
1-Year Est. Return 18.88%
This Fund
S&P 500
This Quarter Est. Return
+8.27%
1 Year Est. Return
+18.88%
3 Year Est. Return
+73.84%
5 Year Est. Return
+90.13%
10 Year Est. Return
+563.35%
AUM
$31.9B
AUM Growth
+$2.51B
Cap. Flow
+$830M
Cap. Flow %
2.6%
Top 10 Hldgs %
23.75%
Holding
2,051
New
174
Increased
889
Reduced
606
Closed
88

Top Buys

Rank Stock Value
1
AMZN icon
Amazon
AMZN
+$66.8M
2
PODD icon
Insulet
PODD
+$47M
3
XMTR icon
Xometry
XMTR
+$44.1M
4
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$43.7M
5
AON icon
Aon
AON
+$36.1M

Top Sells

Rank Stock Value
1
PYPL icon
PayPal
PYPL
+$73.8M
2
ATVI
Activision Blizzard
ATVI
+$46.9M
3
OSH
Oak Street Health, Inc.
OSH
+$43.6M
4
DIS icon
Walt Disney
DIS
+$34M
5
PGR icon
Progressive
PGR
+$32.6M

Sector Composition

Rank Sector Weight
1 Technology 26.2%
2 Healthcare 19.21%
3 Financials 10.7%
4 Consumer Discretionary 10.6%
5 Industrials 10.38%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
NICE icon
801
Nice
NICE
$5.97B
$1.55M ﹤0.01%
5,119
-205
-4% -$59.2K
CIVB icon
802
Civista Bancshares
CIVB
$589M
$1.54M ﹤0.01%
63,300
-4,000
-6% -$98.4K
DDOG icon
803
Datadog
DDOG
$84B
$1.53M ﹤0.01%
8,618
+1,327
+18% +$225K
FDS icon
804
Factset
FDS
$10.2B
$1.53M ﹤0.01%
3,158
+149
+5% +$66.8K
PWR icon
805
Quanta Services
PWR
$101B
$1.52M ﹤0.01%
13,272
+831
+7% +$95.8K
KAI icon
806
Kadant
KAI
$3.99B
$1.52M ﹤0.01%
6,598
+380
+6% +$84.7K
GGT
807
Gabelli Multimedia Trust
GGT
$174M
$1.51M ﹤0.01%
177,135
-15,732
-8% -$142K
MIDD icon
808
Middleby
MIDD
$6.08B
$1.5M ﹤0.01%
7,635
+3,096
+68% +$565K
VTHR icon
809
Vanguard Russell 3000 ETF
VTHR
$4.85B
$1.5M ﹤0.01%
6,954
-175
-2% -$36.9K
MMSI icon
810
Merit Medical Systems
MMSI
$5.32B
$1.5M ﹤0.01%
24,014
+20
+0.1% +$1.34K
NOVT icon
811
Novanta
NOVT
$6.29B
$1.49M ﹤0.01%
8,444
+193
+2% +$32.2K
EXP icon
812
Eagle Materials
EXP
$6.57B
$1.49M ﹤0.01%
8,936
-190
-2% -$29.2K
PAYC icon
813
Paycom
PAYC
$9.69B
$1.49M ﹤0.01%
3,576
+104
+3% +$49.2K
TMUS icon
814
T-Mobile US
TMUS
$190B
$1.48M ﹤0.01%
12,734
-14,680
-54% -$1.73M
HUBS icon
815
HubSpot
HUBS
$10.5B
$1.45M ﹤0.01%
2,206
+790
+56% +$598K
FSLY icon
816
Fastly Inc
FSLY
$3.66B
$1.45M ﹤0.01%
40,981
-7,905
-16% -$344K
FLIC
817
DELISTED
First of Long Island Corp
FLIC
$1.45M ﹤0.01%
+67,076
New +$1.42M
STT icon
818
State Street
STT
$50.7B
$1.45M ﹤0.01%
15,540
+2,820
+22% +$266K
DTD icon
819
WisdomTree US Total Dividend Fund
DTD
$1.69B
$1.44M ﹤0.01%
22,287
+11
+0% +$685
BDSI
820
DELISTED
BioDelivery Sciences International, Inc.
BDSI
$1.44M ﹤0.01%
463,083
-239,060
-34% -$804K
IQV icon
821
IQVIA
IQV
$39.3B
$1.43M ﹤0.01%
5,084
+113
+2% +$29.3K
TTD icon
822
Trade Desk
TTD
$6.49B
$1.43M ﹤0.01%
15,626
-1,804
-10% -$158K
GPC icon
823
Genuine Parts
GPC
$18.7B
$1.43M ﹤0.01%
10,188
-746
-7% -$98.7K
EXC icon
824
Exelon
EXC
$47B
$1.43M ﹤0.01%
34,615
-1,969
-5% -$74.2K
SUI icon
825
Sun Communities
SUI
$14.7B
$1.43M ﹤0.01%
6,793
+1,024
+18% +$202K
31 32
33
34 35

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William Blair & Company's Q4 2021 Portfolio in Review

As of Q4 2021, William Blair & Company held 2,051 positions worth $31.9B, up 8.5% from $29.4B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q4 2021 filing shows 174 new, 889 increased, 606 reduced and 88 closed positions. Its largest new stake was Portillo's: 759,814 shares worth $28.5M. The largest sale was PayPal, an estimated $73.8M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, up from 26% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q4 2021 buy was Portillo's: 759,814 shares worth $28.5M.
  • William Blair & Company added most to Amazon in Q4 2021, an estimated $66.8M increase.
  • William Blair & Company's biggest Q4 2021 reduction was PayPal, cutting an estimated $73.8M.
  • William Blair & Company fully exited Asana in Q4 2021, selling an estimated $6.06M.
  • William Blair & Company's ten largest holdings make up 24% of its $31.9B portfolio in Q4 2021.
  • William Blair & Company opened 174 new positions and closed 88 in Q4 2021.
  • William Blair & Company's portfolio value rose 8.5% quarter-over-quarter to $31.9B.

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