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William Blair & Company

William Blair & Company Portfolio holdings

AUM $38.4B
1-Year Est. Return 25.71%
This Fund
S&P 500
This Quarter Est. Return
+1.99%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+665.86%
AUM
$29.4B
AUM Growth
+$519M
Cap. Flow
+$281M
Cap. Flow %
0.96%
Top 10 Hldgs %
23.58%
Holding
1,987
New
99
Increased
752
Reduced
666
Closed
108

Top Buys

Rank Stock Value
1
ABNB icon
Airbnb
ABNB
+$45.2M
2
CHWY icon
Chewy
CHWY
+$31.5M
3
U icon
Unity
U
+$23.3M
4
RYAN icon
Ryan Specialty Holdings
RYAN
+$22.4M
5
AMZN icon
Amazon
AMZN
+$21.5M

Top Sells

Rank Stock Value
1
IDXX icon
Idexx Laboratories
IDXX
+$37.7M
2
GD icon
General Dynamics
GD
+$33.5M
3
ECL icon
Ecolab
ECL
+$31.7M
4
JNJ icon
Johnson & Johnson
JNJ
+$20.9M
5
UBER icon
Uber
UBER
+$19.2M

Sector Composition

Rank Sector Weight
1 Technology 26.19%
2 Healthcare 19.81%
3 Financials 11.61%
4 Consumer Discretionary 10.68%
5 Industrials 9.37%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
CPAY icon
776
Corpay
CPAY
$27.9B
$1.49M 0.01%
5,713
-4,068
-42% -$1.05M
ESGU icon
777
iShares ESG Aware MSCI USA ETF
ESGU
$18.5B
$1.49M 0.01%
15,130
-15,007
-50% -$1.52M
IVZ icon
778
Invesco
IVZ
$14.2B
$1.49M 0.01%
61,785
+342
+0.6% +$8.55K
HDV
779
iShares Core High Dividend ETF
HDV
$15.1B
$1.48M 0.01%
78,720
-230
-0.3% -$4.45K
SLB icon
780
SLB Ltd
SLB
$77.4B
$1.48M 0.01%
49,904
-12,897
-21% -$370K
GGG icon
781
Graco
GGG
$13.4B
$1.48M 0.01%
21,105
-3,031
-13% -$233K
SPLV icon
782
Invesco S&P 500 Low Volatility ETF
SPLV
$7.22B
$1.47M 0.01%
24,170
-3,946
-14% -$249K
NVO
783
Novo Nordisk
NVO
$204B
$1.46M 0.01%
30,498
+2,532
+9% +$122K
SIVB
784
DELISTED
SVB Financial Group
SIVB
$1.46M 0.01%
2,263
+233
+11% +$135K
VSTO
785
DELISTED
Vista Outdoor Inc.
VSTO
$1.46M 0.01%
36,156
+11,261
+45% +$464K
CIT
786
DELISTED
CIT Group Inc.
CIT
$1.46M 0.01%
28,044
+4,884
+21% +$250K
CDK
787
DELISTED
CDK Global, Inc.
CDK
$1.46M 0.01%
34,192
+833
+2% +$37.5K
BIP icon
788
Brookfield Infrastructure Partners
BIP
$18.4B
$1.45M ﹤0.01%
38,739
-1,223
-3% -$45.4K
IJJ icon
789
iShares S&P Mid-Cap 400 Value ETF
IJJ
$9.07B
$1.44M ﹤0.01%
13,998
-78
-0.6% -$8.2K
TLT icon
790
iShares 20+ Year Treasury Bond ETF
TLT
$40.8B
$1.44M ﹤0.01%
9,988
-1,128
-10% -$167K
PWR icon
791
Quanta Services
PWR
$101B
$1.42M ﹤0.01%
12,441
+737
+6% +$73.9K
VTHR icon
792
Vanguard Russell 3000 ETF
VTHR
$4.89B
$1.41M ﹤0.01%
7,129
– –
IEF icon
793
iShares 7-10 Year Treasury Bond ETF
IEF
$47.3B
$1.41M ﹤0.01%
12,241
-2,054
-14% -$240K
ORI icon
794
Old Republic International
ORI
$10.3B
$1.41M ﹤0.01%
60,739
-750
-1% -$18.6K
CRDF icon
795
Cardiff Oncology
CRDF
$78.6M
$1.4M ﹤0.01%
+210,760
New +$1.32M
XLP icon
796
State Street Consumer Staples Select Sector SPDR ETF
XLP
$14.9B
$1.4M ﹤0.01%
20,399
-1,097
-5% -$78.2K
GVA icon
797
Granite Construction
GVA
$5.42B
$1.4M ﹤0.01%
35,323
+18,923
+115% +$748K
EPAY
798
DELISTED
Bottomline Technologies Inc
EPAY
$1.4M ﹤0.01%
35,516
-4,336
-11% -$175K
TER icon
799
Teradyne
TER
$64.3B
$1.39M ﹤0.01%
12,768
+79
+0.6% +$9.6K
BNY
800
Bank of New York Mellon
BNY
$110B
$1.39M ﹤0.01%
26,826
-4,269
-14% -$222K
30 31
32
33 34

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William Blair & Company's Q3 2021 Portfolio in Review

As of Q3 2021, William Blair & Company held 1,987 positions worth $29.4B, up 1.8% from $28.9B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q3 2021 filing shows 99 new, 752 increased, 666 reduced and 108 closed positions. Its largest new stake was Ryan Specialty Holdings: 709,555 shares worth $24M. The largest sale was Idexx Laboratories, an estimated $37.7M.

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 Q3 2021 buy was Ryan Specialty Holdings: 709,555 shares worth $24M.
  • William Blair & Company added most to Airbnb in Q3 2021, an estimated $45.2M increase.
  • William Blair & Company's biggest Q3 2021 reduction was Idexx Laboratories, cutting an estimated $37.7M.
  • William Blair & Company fully exited Slack Technologies, Inc. in Q3 2021, selling an estimated $13.8M.
  • William Blair & Company's ten largest holdings make up 24% of its $29.4B portfolio in Q3 2021.
  • William Blair & Company opened 99 new positions and closed 108 in Q3 2021.
  • William Blair & Company's portfolio value rose 1.8% quarter-over-quarter to $29.4B.

Based on William Blair & Company's 13F filing for Q3 2021, filed 12 Nov 2021.