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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
USEQ
1826
DELISTED
Invesco Russell 1000 Enhanced Equal Weight ETF
USEQ
$23K ﹤0.01%
580
– –
CZA icon
1827
Invesco Zacks Mid-Cap ETF
CZA
$192M
$22K ﹤0.01%
230
– –
DIG icon
1828
ProShares Ultra Energy
DIG
$76.9M
$22K ﹤0.01%
1,144
– –
HYD icon
1829
VanEck High Yield Muni ETF
HYD
$4.45B
$22K ﹤0.01%
350
– –
IGM icon
1830
iShares Expanded Tech Sector ETF
IGM
$10.7B
$22K ﹤0.01%
300
– –
INTF icon
1831
iShares International Equity Factor ETF
INTF
$3.72B
$22K ﹤0.01%
765
– –
MJ icon
1832
Amplify Alternative Harvest ETF
MJ
$105M
$22K ﹤0.01%
163
-11
-6% -$1.73K
OXY.WS icon
1833
Occidental Petroleum Corp Warrants
OXY.WS
$32B
$22K ﹤0.01%
1,755
+1
+0.1% +$14
GII icon
1834
State Street SPDR S&P Global Infrastructure ETF
GII
$932M
$21K ﹤0.01%
390
– –
EQC.PRD
1835
DELISTED
Equity Commonwealth 6 1/2% Series D Cumulative Convertible Preferred Shares
EQC.PRD
$21K ﹤0.01%
+714
New +$21.7K
HYLS icon
1836
First Trust Exchange-Traded Fund IV First Trust Tactical High Yield ETF
HYLS
$1.63B
$20K ﹤0.01%
412
– –
ARDX icon
1837
Ardelyx
ARDX
$997M
$19K ﹤0.01%
17,500
-1,500
-8% -$1.78K
STZ.B
1838
DELISTED
CONSTELLATION BRANDS, INC. CLASS B
STZ.B
$19K ﹤0.01%
75
-47
-39% -$10.7K
EWD icon
1839
iShares MSCI Sweden ETF
EWD
$595M
$18K ﹤0.01%
397
+47
+13% +$2.19K
TLH icon
1840
iShares 10-20 Year Treasury Bond ETF
TLH
$10.9B
$18K ﹤0.01%
124
+31
+33% +$4.59K
XTL icon
1841
State Street SPDR S&P Telecom ETF
XTL
$586M
$18K ﹤0.01%
179
– –
CPAAW
1842
DELISTED
Conyers Park III Acquisition Corp. Warrants
CPAAW
$17K ﹤0.01%
+19,138
New +$19.1K
RSPT icon
1843
Invesco S&P 500 Equal Weight Technology ETF
RSPT
$5.87B
$16K ﹤0.01%
500
– –
SDVY icon
1844
First Trust SMID Cap Rising Dividend Achievers ETF
SDVY
$11.8B
$16K ﹤0.01%
515
– –
CUT icon
1845
Invesco MSCI Global Timber ETF
CUT
$33.8M
$15K ﹤0.01%
400
– –
KBWD icon
1846
Invesco KBW High Dividend Yield Financial ETF
KBWD
$428M
$15K ﹤0.01%
+725
New +$15K
OPTT icon
1847
Ocean Power Technologies
OPTT
$49.9M
$15K ﹤0.01%
10,000
– –
PPH icon
1848
VanEck Pharmaceutical ETF
PPH
$938M
$15K ﹤0.01%
+200
New +$14.9K
VNM icon
1849
VanEck Vietnam ETF
VNM
$504M
$15K ﹤0.01%
700
-383
-35% -$7.79K
IBDT icon
1850
iShares iBonds Dec 2028 Term Corporate ETF
IBDT
$4.06B
$14K ﹤0.01%
500
-500
-50% -$14.2K
72 73
74
75 76

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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.