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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
PSXP
1001
DELISTED
PHILLIPS 66 PARTNERS LP
PSXP
$882K ﹤0.01%
24,460
-6,260
-20% -$233K
PAAS icon
1002
Pan American Silver
PAAS
$21.6B
$880K ﹤0.01%
35,250
+3,701
+12% +$93.2K
GRMN
1003
Garmin
GRMN
$60B
$879K ﹤0.01%
6,453
+107
+2% +$15.5K
RGEN icon
1004
Repligen
RGEN
$9.25B
$877K ﹤0.01%
3,313
+225
+7% +$60.6K
RVLV icon
1005
Revolve Group
RVLV
$1.73B
$870K ﹤0.01%
15,533
+2,456
+19% +$173K
LNT icon
1006
Alliant Energy
LNT
$18B
$868K ﹤0.01%
14,123
+10
+0.1% +$573
VXUS icon
1007
Vanguard Total International Stock ETF
VXUS
$163B
$866K ﹤0.01%
13,617
+3,080
+29% +$198K
FLG
1008
Flagstar Bank National Association
FLG
$5.82B
$863K ﹤0.01%
23,551
-373
-2% -$14.2K
FITB
1009
Fifth Third Bancorp
FITB
$51.8B
$862K ﹤0.01%
19,796
+356
+2% +$15.6K
CMA
1010
DELISTED
Comerica
CMA
$861K ﹤0.01%
9,897
+46
+0.5% +$3.95K
UP icon
1011
Wheels Up
UP
$198M
$855K ﹤0.01%
921
-1
-0.1% -$1.17K
SONO icon
1012
Sonos
SONO
$1.85B
$854K ﹤0.01%
28,665
+7,075
+33% +$225K
SCHX icon
1013
Schwab US Large- Cap ETF
SCHX
$74.6B
$853K ﹤0.01%
44,946
+14,022
+45% +$259K
VOX icon
1014
Vanguard Communication Services ETF
VOX
$5.85B
$853K ﹤0.01%
6,292
+618
+11% +$86K
LTCH
1015
DELISTED
Latch, Inc. Common Stock
LTCH
$853K ﹤0.01%
112,729
+11,123
+11% +$98.3K
HHH icon
1016
Howard Hughes
HHH
$4.03B
$846K ﹤0.01%
8,722
+190
+2% +$16.6K
BECN
1017
DELISTED
Beacon Roofing Supply, Inc.
BECN
$841K ﹤0.01%
14,657
+1,000
+7% +$53.9K
FNV icon
1018
Franco-Nevada
FNV
$46B
$837K ﹤0.01%
6,055
+315
+5% +$43.5K
ALB icon
1019
Albemarle
ALB
$15.5B
$835K ﹤0.01%
3,573
+601
+20% +$149K
EEMA icon
1020
iShares MSCI Emerging Markets Asia ETF
EEMA
$860M
$832K ﹤0.01%
10,144
-41
-0.4% -$3.47K
BBBY
1021
Bed Bath & Beyond
BBBY
$442M
$828K ﹤0.01%
15,441
+2,045
+15% +$154K
IS
1022
DELISTED
ironSource Ltd.
IS
$828K ﹤0.01%
+106,953
New +$1.05M
PZA icon
1023
Invesco National AMT-Free Municipal Bond ETF
PZA
$4.26B
$824K ﹤0.01%
30,377
-251
-0.8% -$6.77K
EVRG icon
1024
Evergy
EVRG
$19.2B
$821K ﹤0.01%
11,965
+1,547
+15% +$101K
VMW
1025
DELISTED
VMware, Inc
VMW
$821K ﹤0.01%
7,085
+4,818
+213% +$633K
39 40
41
42 43

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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.