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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
IFRA icon
1701
iShares US Infrastructure ETF
IFRA
$4.6B
$79K ﹤0.01%
2,053
+12
+0.6% +$440
AWRE icon
1702
Aware
AWRE
$27.7M
$75K ﹤0.01%
23,664
– –
DBEU icon
1703
Xtrackers MSCI Europe Hedged Equity ETF
DBEU
$799M
$73K ﹤0.01%
2,000
– –
GOCO
1704
DELISTED
GoHealth
GOCO
$73K ﹤0.01%
1,291
+78
+6% +$5.21K
EWX icon
1705
State Street SPDR S&P Emerging Markets Small Cap ETF
EWX
$693M
$72K ﹤0.01%
1,220
– –
JHML icon
1706
John Hancock Multifactor Large Cap ETF
JHML
$1.2B
$72K ﹤0.01%
1,207
– –
SCHM icon
1707
Schwab US Mid-Cap ETF
SCHM
$15.1B
$71K ﹤0.01%
2,631
+1,461
+125% +$39K
EWZ icon
1708
iShares MSCI Brazil ETF
EWZ
$8.95B
$70K ﹤0.01%
2,489
+27
+1% +$811
PFXF icon
1709
VanEck Preferred Securities ex Financials ETF
PFXF
$2.45B
$70K ﹤0.01%
3,200
– –
BLV icon
1710
Vanguard Long-Term Bond ETF
BLV
$5.74B
$68K ﹤0.01%
664
+385
+138% +$39.8K
DFEB icon
1711
FT Vest US Equity Deep Buffer ETF February
DFEB
$463M
$68K ﹤0.01%
1,933
– –
OTRK
1712
DELISTED
Ontrak
OTRK
$68K ﹤0.01%
119
-4
-3% -$2.81K
SLYV icon
1713
State Street SPDR S&P 600 Small Cap Value ETF
SLYV
$5.08B
$68K ﹤0.01%
800
– –
EPP icon
1714
iShares MSCI Pacific ex Japan ETF
EPP
$2.28B
$67K ﹤0.01%
1,413
+841
+147% +$41.6K
PSK icon
1715
State Street SPDR ICE Preferred Securities ETF
PSK
$686M
$67K ﹤0.01%
1,564
+1,134
+264% +$48.5K
SRVR icon
1716
Pacer Data & Infrastructure Real Estate ETF
SRVR
$381M
$67K ﹤0.01%
+1,541
New +$62.6K
HEWG
1717
DELISTED
iShares Currency Hedged MSCI Germany ETF
HEWG
$67K ﹤0.01%
2,039
– –
BKLN icon
1718
Invesco Senior Loan ETF
BKLN
$6.74B
$66K ﹤0.01%
2,975
-953
-24% -$21K
MDYG icon
1719
State Street SPDR S&P 400 Mid Cap Growth ETF
MDYG
$2.94B
$66K ﹤0.01%
810
-308
-28% -$24.7K
BGY icon
1720
BlackRock Enhanced International Dividend Trust
BGY
$529M
$65K ﹤0.01%
10,312
-315
-3% -$1.96K
QQQM icon
1721
Invesco NASDAQ 100 ETF
QQQM
$102B
$65K ﹤0.01%
400
– –
DM
1722
DELISTED
Desktop Metal, Inc.
DM
$65K ﹤0.01%
+1,305
New +$87.8K
PFLD icon
1723
AAM Low Duration Preferred and Income Securities ETF
PFLD
$408M
$63K ﹤0.01%
+2,500
New +$62.6K
SPAB icon
1724
State Street SPDR Portfolio Aggregate Bond ETF
SPAB
$9.94B
$63K ﹤0.01%
2,141
-581
-21% -$17.3K
IMCG icon
1725
iShares Morningstar Mid-Cap Growth ETF
IMCG
$4.12B
$62K ﹤0.01%
846
-36
-4% -$2.62K
67 68
69
70 71

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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.