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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
PSR icon
1776
Invesco Active US Real Estate Fund
PSR
$59.2M
$10K ﹤0.01%
94
– –
WCLD
1777
WisdomTree Cloud Computing Fund
WCLD
$302M
$10K ﹤0.01%
173
– –
USLB
1778
DELISTED
Invesco Russell 1000 Low Beta Equal Weight ETF
USLB
$10K ﹤0.01%
250
– –
ECH icon
1779
iShares MSCI Chile ETF
ECH
$1.03B
$9K ﹤0.01%
359
– –
IYT icon
1780
iShares US Transportation ETF
IYT
$2.27B
$9K ﹤0.01%
148
– –
ELD icon
1781
WisdomTree Emerging Markets Local Debt Fund
ELD
$143M
$8K ﹤0.01%
265
+1
+0.4% +$32
FXU icon
1782
First Trust Utilities AlphaDEX Fund
FXU
$827M
$8K ﹤0.01%
261
-256
-50% -$7.95K
IGE icon
1783
iShares North American Natural Resources ETF
IGE
$786M
$8K ﹤0.01%
283
– –
RXI icon
1784
iShares Global Consumer Discretionary ETF
RXI
$274M
$8K ﹤0.01%
50
-10
-17% -$1.69K
TIPX icon
1785
State Street SPDR Bloomberg 1-10 Year TIPS ETF
TIPX
$2.04B
$8K ﹤0.01%
400
– –
DFE icon
1786
WisdomTree Europe SmallCap Dividend Fund
DFE
$168M
$7K ﹤0.01%
95
– –
PWV icon
1787
Invesco Large Cap Value ETF
PWV
$1.78B
$7K ﹤0.01%
156
– –
QDF icon
1788
FlexShares Quality Dividend Index Fund
QDF
$2.28B
$7K ﹤0.01%
124
– –
RGLS
1789
DELISTED
Regulus Therapeutics
RGLS
$7K ﹤0.01%
1,070
– –
SCHC icon
1790
Schwab International Small-Cap Equity ETF
SCHC
$5.67B
$7K ﹤0.01%
171
-212
-55% -$9.01K
SLVP icon
1791
iShares MSCI Global Silver and Metals Miners ETF
SLVP
$976M
$7K ﹤0.01%
557
– –
AGQ icon
1792
ProShares Ultra Silver
AGQ
$1.46B
$6K ﹤0.01%
+200
New +$7.85K
CHIQ icon
1793
Global X MSCI China Consumer Discretionary ETF
CHIQ
$123M
$6K ﹤0.01%
200
-196
-49% -$5.96K
EBND icon
1794
State Street SPDR Bloomberg Emerging Markets Local Bond ETF
EBND
$2.27B
$6K ﹤0.01%
243
-7
-3% -$182
PPA icon
1795
Invesco Aerospace & Defense ETF
PPA
$8.74B
$6K ﹤0.01%
80
-400
-83% -$29.4K
SPEU icon
1796
State Street SPDR Portfolio Europe ETF
SPEU
$742M
$6K ﹤0.01%
135
– –
XHS icon
1797
State Street SPDR S&P Health Care Services ETF
XHS
$207M
$6K ﹤0.01%
60
– –
GPL
1798
DELISTED
Great Panther Mining Limited
GPL
$6K ﹤0.01%
1,300
-400
-24% -$2.11K
AIA icon
1799
iShares Asia 50 ETF
AIA
$5.04B
$5K ﹤0.01%
66
– –
FAN icon
1800
First Trust Global Wind Energy ETF
FAN
$288M
$5K ﹤0.01%
+244
New +$5.25K
70 71
72
73 74

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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.