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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
HBT icon
1876
HBT Financial
HBT
$1.33B
– –
-14,500
Closed -$252K
HLI icon
1877
Houlihan Lokey
HLI
$8.63B
– –
-5,904
Closed -$483K
INVH icon
1878
Invitation Homes
INVH
$17.7B
– –
-6,053
Closed -$226K
IX icon
1879
ORIX
IX
$44.1B
– –
-26,220
Closed -$444K
IXC icon
1880
iShares Global Energy ETF
IXC
$2.74B
– –
-290
Closed -$8K
JD icon
1881
JD.com
JD
$42.7B
– –
-7,122
Closed -$568K
JEF icon
1882
Jefferies Financial Group
JEF
$12.6B
– –
-11,144
Closed -$364K
JETS icon
1883
US Global Jets ETF
JETS
$825M
– –
-1,087
Closed -$26K
JXI icon
1884
iShares Global Utilities ETF
JXI
$307M
– –
-190
Closed -$11K
KN icon
1885
Knowles
KN
$3.33B
– –
-12
Closed –
LDOS icon
1886
Leidos
LDOS
$17.6B
– –
-2,092
Closed -$212K
LSPD icon
1887
Lightspeed Commerce
LSPD
$1.35B
– –
-2,517
Closed -$210K
LYRA
1888
DELISTED
LYRA THERAPEUTICS INC
LYRA
– –
-1,100
Closed -$442K
MASI
1889
DELISTED
Masimo
MASI
– –
-1,845
Closed -$447K
MGC icon
1890
Vanguard Morningstar Mega Cap ETF
MGC
$10.4B
– –
-619
Closed -$94K
MUFG icon
1891
Mitsubishi UFJ Financial
MUFG
$257B
– –
-40,000
Closed -$217K
NANR icon
1892
State Street SPDR S&P North American Natural Resources ETF
NANR
$812M
– –
-175
Closed -$7K
NTES icon
1893
NetEase
NTES
$79.5B
– –
-3,286
Closed -$379K
NVCR icon
1894
NovoCure
NVCR
$2.05B
– –
-1,775
Closed -$394K
NVR icon
1895
NVR
NVR
$16.8B
– –
-48
Closed -$239K
OGS icon
1896
ONE Gas
OGS
$5.05B
– –
-2,705
Closed -$200K
OR icon
1897
OR Royalties Inc
OR
$6.31B
– –
-11,265
Closed -$154K
OTLY
1898
Oatly Group
OTLY
$420M
– –
-918
Closed -$449K
PEY icon
1899
Invesco High Yield Equity Dividend Achievers ETF
PEY
$1.16B
– –
-650
Closed -$13K
PFI icon
1900
Invesco Dorsey Wright Financial Momentum ETF
PFI
$60.1M
– –
-250
Closed -$13K
74 75
76
77 78

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HF
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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.