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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
DHI icon
526
D.R. Horton
DHI
$42.3B
$4.01M 0.01%
36,994
-92
-0.2% -$8.86K
URI icon
527
United Rentals
URI
$72.4B
$4.01M 0.01%
12,064
+3,471
+40% +$1.24M
WEC icon
528
WEC Energy
WEC
$35.1B
$3.99M 0.01%
41,086
-2,695
-6% -$246K
ES icon
529
Eversource Energy
ES
$27.2B
$3.98M 0.01%
43,798
+505
+1% +$43.4K
AYX
530
DELISTED
Alteryx Inc
AYX
$3.98M 0.01%
65,791
-17,720
-21% -$1.22M
ELS icon
531
Equity Lifestyle Properties
ELS
$12.6B
$3.98M 0.01%
45,392
– –
CRWD icon
532
CrowdStrike
CRWD
$218B
$3.97M 0.01%
77,640
-30,968
-29% -$1.89M
VNQI icon
533
Vanguard Global ex-US Real Estate ETF
VNQI
$3.53B
$3.97M 0.01%
73,657
-826
-1% -$46.6K
IMGN
534
DELISTED
Immunogen Inc
IMGN
$3.97M 0.01%
535,485
+19,885
+4% +$124K
NVRO
535
DELISTED
NEVRO CORP.
NVRO
$3.97M 0.01%
48,975
+2,333
+5% +$234K
CAKE icon
536
Cheesecake Factory
CAKE
$5.33B
$3.95M 0.01%
100,933
+1,057
+1% +$44.5K
TCMD icon
537
Tactile Systems Technology
TCMD
$665M
$3.95M 0.01%
207,622
-2,254
-1% -$63.9K
LQD icon
538
iShares iBoxx $ Investment Grade Corporate Bond ETF
LQD
$33B
$3.94M 0.01%
29,707
+1,483
+5% +$197K
AEP icon
539
American Electric Power
AEP
$68.4B
$3.93M 0.01%
44,188
+4,337
+11% +$366K
EWU icon
540
iShares MSCI United Kingdom ETF
EWU
$4.16B
$3.93M 0.01%
118,473
+49,389
+71% +$1.63M
OSH
541
DELISTED
Oak Street Health, Inc.
OSH
$3.91M 0.01%
118,076
-1,152,084
-91% -$43.6M
LRCX icon
542
Lam Research
LRCX
$390B
$3.9M 0.01%
54,190
+17,060
+46% +$1.07M
MEDP icon
543
Medpace
MEDP
$16.5B
$3.89M 0.01%
17,892
-131
-0.7% -$27.4K
SPCE icon
544
Virgin Galactic
SPCE
$398M
$3.89M 0.01%
14,522
-13
-0.1% -$4.7K
CHKP icon
545
Check Point Software Technologies
CHKP
$13.1B
$3.88M 0.01%
33,317
-9,374
-22% -$1.09M
IXUS icon
546
iShares Core MSCI Total International Stock ETF
IXUS
$60.1B
$3.88M 0.01%
54,694
-7,613
-12% -$547K
GBCI icon
547
Glacier Bancorp
GBCI
$6.35B
$3.88M 0.01%
68,409
-461
-0.7% -$26.1K
TPL icon
548
Texas Pacific Land
TPL
$23.5B
$3.88M 0.01%
27,927
+9
+0% +$1.25K
CNNE icon
549
Cannae Holdings
CNNE
$649M
$3.87M 0.01%
110,226
-16,675
-13% -$553K
CRL icon
550
Charles River Laboratories
CRL
$12.8B
$3.85M 0.01%
10,224
-5,012
-33% -$1.95M
20 21
22
23 24

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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.