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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
SWK icon
576
Stanley Black & Decker
SWK
$15.7B
$3.48M 0.01%
18,447
+8,968
+95% +$1.66M
PEN icon
577
Penumbra
PEN
$12.8B
$3.47M 0.01%
12,065
+1,973
+20% +$522K
FTEC icon
578
Fidelity MSCI Information Technology Index ETF
FTEC
$21.3B
$3.46M 0.01%
25,553
+17,053
+201% +$2.21M
PLD icon
579
Prologis
PLD
$133B
$3.46M 0.01%
20,520
+4,928
+32% +$736K
PDP icon
580
Invesco Dorsey Wright Momentum ETF
PDP
$1.5B
$3.45M 0.01%
36,500
– –
PNC icon
581
PNC Financial Services
PNC
$101B
$3.39M 0.01%
16,908
+2,773
+20% +$564K
VRRM icon
582
Verra Mobility
VRRM
$744M
$3.38M 0.01%
218,781
+74,342
+51% +$1.13M
IGSB icon
583
iShares 1-5 Year Investment Grade Corporate Bond ETF
IGSB
$23B
$3.35M 0.01%
62,252
-4,675
-7% -$253K
SU icon
584
Suncor Energy
SU
$70.3B
$3.35M 0.01%
133,993
-12,377
-8% -$301K
NSSC icon
585
Napco Security Technologies
NSSC
$1.48B
$3.34M 0.01%
133,756
+3,130
+2% +$73.9K
KBE icon
586
State Street SPDR S&P Bank ETF
KBE
$1.66B
$3.33M 0.01%
61,132
-133
-0.2% -$7.37K
SRPT icon
587
Sarepta Therapeutics
SRPT
$1.77B
$3.32M 0.01%
36,896
-1,903
-5% -$163K
FCX icon
588
Freeport-McMoran
FCX
$97.5B
$3.32M 0.01%
79,592
-72,909
-48% -$2.77M
XM
589
DELISTED
Qualtrics International Inc. Class A Common Stock
XM
$3.3M 0.01%
+93,199
New +$3.62M
CARR icon
590
Carrier Global
CARR
$52.8B
$3.29M 0.01%
60,610
-2,455
-4% -$132K
MAR icon
591
Marriott International
MAR
$92.3B
$3.29M 0.01%
19,886
-10
-0.1% -$1.57K
TT icon
592
Trane Technologies
TT
$106B
$3.28M 0.01%
16,232
+1,843
+13% +$347K
PRO
593
DELISTED
PROS Holdings
PRO
$3.27M 0.01%
94,959
-3,500
-4% -$120K
ZBH icon
594
Zimmer Biomet
ZBH
$18.4B
$3.26M 0.01%
26,439
+284
+1% +$37.2K
IP icon
595
International Paper
IP
$22B
$3.25M 0.01%
69,226
-22,698
-25% -$1.12M
IYR icon
596
iShares US Real Estate ETF
IYR
$4.65B
$3.25M 0.01%
27,946
+828
+3% +$90.7K
VTIP icon
597
Vanguard Short-Term Inflation-Protected Securities Index Fund
VTIP
$19.1B
$3.24M 0.01%
62,971
+268
+0.4% +$13.9K
ATR icon
598
AptarGroup
ATR
$8.61B
$3.23M 0.01%
26,333
-16,471
-38% -$2.05M
CLF icon
599
Cleveland-Cliffs
CLF
$6.99B
$3.19M 0.01%
+146,567
New +$3.16M
VCYT icon
600
Veracyte
VCYT
$3.8B
$3.16M 0.01%
76,786
+1,229
+2% +$54.3K
22 23
24
25 26

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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.