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William Blair & Company

William Blair & Company Portfolio holdings

AUM $38.4B
1-Year Est. Return 25.71%
This Fund
S&P 500
This Quarter Est. Return
+8.27%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+665.86%
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
AIVI icon
1726
WisdomTree International AI Enhanced Value Fund
AIVI
$63.1M
$61K ﹤0.01%
1,450
– –
FV icon
1727
First Trust Dorsey Wright Focus 5 ETF
FV
$3.8B
$61K ﹤0.01%
1,236
+1
+0.1% +$49
IAT icon
1728
iShares US Regional Banks ETF
IAT
$687M
$61K ﹤0.01%
991
+91
+10% +$5.75K
SENS icon
1729
Senseonics Holdings Inc
SENS
$419M
$61K ﹤0.01%
+1,140
New +$74.1K
SPFF icon
1730
Global X SuperIncome Preferred ETF
SPFF
$143M
$61K ﹤0.01%
+5,200
New +$61.3K
RESE
1731
DELISTED
WisdomTree Emerging Markets ESG Fund
RESE
$61K ﹤0.01%
1,741
+7
+0.4% +$248
IYY icon
1732
iShares Dow Jones US ETF
IYY
$3.07B
$60K ﹤0.01%
510
– –
PGF icon
1733
Invesco Financial Preferred ETF
PGF
$668M
$60K ﹤0.01%
3,180
-707
-18% -$13.2K
PHAS
1734
DELISTED
PhaseBio Pharmaceuticals, Inc. Common Stock
PHAS
$60K ﹤0.01%
22,886
+4,886
+27% +$14.8K
TOVX icon
1735
Theriva Biologics
TOVX
$11M
$59K ﹤0.01%
864
+49
+6% +$4.62K
AUTL
1736
Autolus Therapeutics
AUTL
$564M
$58K ﹤0.01%
+11,169
New +$67K
AUGX
1737
DELISTED
Augmedix, Inc. Common Stock
AUGX
$58K ﹤0.01%
+18,425
New +$66.8K
ITEQ icon
1738
Amplify BlueStar Israel Technology ETF
ITEQ
$118M
$57K ﹤0.01%
900
– –
PXH icon
1739
Invesco FTSE RAFI Emerging Markets ETF
PXH
$1.97B
$57K ﹤0.01%
2,586
-648
-20% -$14.5K
ACOR
1740
DELISTED
Acorda Therapeutics
ACOR
$57K ﹤0.01%
1,192
– –
COHR icon
1741
Coherent
COHR
$69.6B
$55K ﹤0.01%
808
+40
+5% +$2.52K
LRGF icon
1742
iShares US Equity Factor ETF
LRGF
$3.71B
$55K ﹤0.01%
1,185
– –
PID icon
1743
Invesco International Dividend Achievers ETF
PID
$912M
$55K ﹤0.01%
3,000
– –
PSQ icon
1744
ProShares Short QQQ
PSQ
$642M
$55K ﹤0.01%
1,010
-500
-33% -$28.1K
DHR.PRA
1745
DELISTED
Danaher Corporation 4.75% Mandatory Convertible Preferred Stock, Series A
DHR.PRA
$55K ﹤0.01%
+25
New +$51.8K
DIM icon
1746
WisdomTree International MidCap Dividend Fund
DIM
$169M
$54K ﹤0.01%
800
– –
RSPM icon
1747
Invesco S&P 500 Equal Weight Materials ETF
RSPM
$184M
$53K ﹤0.01%
1,470
+5
+0.3% +$172
ADRE
1748
DELISTED
Invesco BLDRS Emerging Markets 50 ADR Index Fund
ADRE
$53K ﹤0.01%
1,150
– –
IVOV icon
1749
Vanguard S&P Mid-Cap 400 Value ETF
IVOV
$1.37B
$52K ﹤0.01%
622
+80
+15% +$6.71K
EMAN
1750
DELISTED
eMagin Corporation
EMAN
$52K ﹤0.01%
40,100
+5,000
+14% +$10K
68 69
70
71 72

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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.