We are live on ! Find out more
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
MD icon
1976
Pediatrix Medical
MD
$2.2B
– –
-18,828
Closed -$535K
MGA icon
1977
Magna International
MGA
$18.8B
– –
-3,105
Closed -$234K
DFTX
1978
Definium Therapeutics
DFTX
$6.12B
– –
-885
Closed -$32K
MTW icon
1979
Manitowoc
MTW
$675M
– –
-27,532
Closed -$590K
NCLH icon
1980
Norwegian Cruise Line
NCLH
$8.84B
– –
-14,942
Closed -$399K
NCNO icon
1981
nCino
NCNO
$2.1B
– –
-31,482
Closed -$2.24M
NDRA icon
1982
ENDRA Life Sciences
NDRA
$5.84M
– –
-1
Closed -$61K
NG icon
1983
NovaGold Resources
NG
$3.33B
– –
-13,790
Closed -$95K
NGD
1984
DELISTED
New Gold Inc
NGD
– –
-13,000
Closed -$14K
PETS icon
1985
PetMed Express
PETS
$42.3M
– –
-25,129
Closed -$675K
PRGO icon
1986
Perrigo
PRGO
$1.78B
– –
-7,136
Closed -$338K
PWV icon
1987
Invesco Large Cap Value ETF
PWV
$1.72B
– –
-156
Closed -$7K
QRVO icon
1988
Qorvo
QRVO
$8.74B
– –
-12,266
Closed -$2.05M
RNR icon
1989
RenaissanceRe
RNR
$13.4B
– –
-2,549
Closed -$355K
SIL icon
1990
Global X Silver Miners ETF NEW
SIL
$4.75B
– –
-150
Closed -$5K
SKM icon
1991
SK Telecom
SKM
$13.2B
– –
-4,128
Closed -$205K
SPOT icon
1992
Spotify
SPOT
$100B
– –
-1,158
Closed -$261K
SPSC icon
1993
SPS Commerce
SPSC
$2.64B
– –
-1,400
Closed -$226K
SRS icon
1994
ProShares UltraShort Real Estate
SRS
$15.4M
$0 ﹤0.01%
1
– –
SSRM icon
1995
SSR Mining
SSRM
$6.48B
– –
-10,133
Closed -$147K
STLA icon
1996
Stellantis
STLA
$20.8B
– –
-10,040
Closed -$192K
TDW icon
1997
Tidewater
TDW
$4.12B
– –
-12,006
Closed -$145K
UPST icon
1998
Upstart Holdings
UPST
$3.03B
– –
-1,211
Closed -$383K
VERV
1999
DELISTED
Verve Therapeutics
VERV
– –
-4,875
Closed -$229K
WBD icon
2000
Warner Bros
WBD
$67.1B
– –
-3,436
Closed -$87K
78 79
80
81 82

Similar funds

SAM
Storebrand Asset Management Lysaker, Norway $34.8B AUM 25.49% 1-Year Est. Return
Chevy Chase Trust
Chevy Chase Trust Bethesda, Maryland $34.7B AUM 29.45% 1-Year Est. Return
VIA
Vanguard Investments Australia Victoria, Australia $34.6B AUM
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return
Pacer Advisors
Pacer Advisors Malvern, Pennsylvania $35.6B AUM 18.19% 1-Year Est. Return
Kayne Anderson Rudnick Investment Management
Kayne Anderson Rudnick Investment Management Los Angeles, California $34B AUM 6.31% 1-Year Est. Return
Viking Global Investors
Viking Global Investors Stamford, Connecticut $35.7B AUM 21.3% 1-Year Est. Return
First Manhattan
First Manhattan New York $36.1B AUM 11.5% 1-Year Est. Return

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.