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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
GPL
1926
DELISTED
Great Panther Mining Limited
GPL
$2K ﹤0.01%
1,100
-200
-15% -$680
BUZZ icon
1927
VanEck Social Sentiment ETF
BUZZ
$99.2M
$1K ﹤0.01%
37
-600
-94% -$15K
FCOM icon
1928
Fidelity MSCI Communication Services Index ETF
FCOM
$1.81B
$1K ﹤0.01%
25
– –
FIW icon
1929
First Trust Water ETF
FIW
$1.94B
$1K ﹤0.01%
9
– –
FSTA icon
1930
Fidelity MSCI Consumer Staples Index ETF
FSTA
$1.42B
$1K ﹤0.01%
30
– –
GURU icon
1931
Global X Guru Index ETF
GURU
$63.5M
$1K ﹤0.01%
24
– –
PBP icon
1932
Invesco S&P 500 BuyWrite ETF
PBP
$362M
$1K ﹤0.01%
+26
New +$615
SDIV icon
1933
Global X SuperDividend ETF
SDIV
$1.21B
$1K ﹤0.01%
38
– –
SPYX icon
1934
State Street SPDR S&P 500 Fossil Fuel Reserves Free ETF
SPYX
$2.84B
$1K ﹤0.01%
+15
New +$568
XES icon
1935
State Street SPDR S&P Oil & Gas Equipment & Services ETF
XES
$364M
$1K ﹤0.01%
23
– –
DSKEW
1936
DELISTED
Daseke, Inc. Warrant
DSKEW
$1K ﹤0.01%
10,000
– –
ADAP
1937
DELISTED
Adaptimmune Therapeutics
ADAP
– –
-40,000
Closed -$207K
AES icon
1938
AES
AES
$10.5B
– –
-9,708
Closed -$222K
AIEQ icon
1939
Amplify AI Powered Equity ETF
AIEQ
$123M
– –
-6
Closed –
ALLE icon
1940
Allegion
ALLE
$14.4B
– –
-2,725
Closed -$360K
ALLK
1941
DELISTED
Allakos
ALLK
– –
-12,300
Closed -$1.3M
AOM icon
1942
iShares Core Moderate Allocation ETF
AOM
$1.78B
– –
-700
Closed -$31K
APO icon
1943
Apollo Global Management
APO
$73.4B
– –
-88,555
Closed -$5.45M
ARW icon
1944
Arrow Electronics
ARW
$10.4B
– –
-1,829
Closed -$205K
ASAN icon
1945
Asana
ASAN
$2.13B
– –
-58,355
Closed -$6.06M
BBRE icon
1946
JPMorgan BetaBuilders MSCI US REIT ETF
BBRE
$1.27B
– –
-5
Closed –
BLMN icon
1947
Bloomin' Brands
BLMN
$938M
– –
-35,726
Closed -$893K
BW icon
1948
Babcock & Wilcox
BW
$1.39B
– –
-20,001
Closed -$128K
BY icon
1949
Byline Bancorp
BY
$1.76B
– –
-16,200
Closed -$398K
CERS icon
1950
Cerus
CERS
$474M
– –
-35,151
Closed -$214K
76 77
78
79 80

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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.