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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
EWP icon
1826
iShares MSCI Spain ETF
EWP
$2.22B
$2K ﹤0.01%
+69
New +$1.93K
FALN icon
1827
iShares Fallen Angels USD Bond ETF
FALN
$1.6B
$2K ﹤0.01%
53
IMCV icon
1828
iShares Morningstar Mid-Cap Value ETF
IMCV
$1.16B
$2K ﹤0.01%
30
PJP icon
1829
Invesco Pharmaceuticals ETF
PJP
$499M
$2K ﹤0.01%
28
PSP icon
1830
Invesco Global Listed Private Equity ETF
PSP
$248M
$2K ﹤0.01%
25
SDIV icon
1831
Global X SuperDividend ETF
SDIV
$1.21B
$2K ﹤0.01%
38
XSLV icon
1832
Invesco S&P SmallCap Low Volatility ETF
XSLV
$249M
$2K ﹤0.01%
42
DSKEW
1833
DELISTED
Daseke, Inc. Warrant
DSKEW
$2K ﹤0.01%
10,000
NORW
1834
DELISTED
Global X MSCI Norway ETF
NORW
$2K ﹤0.01%
130
EPOL icon
1835
iShares MSCI Poland ETF
EPOL
$825M
$1K ﹤0.01%
55
EWI icon
1836
iShares MSCI Italy ETF
EWI
$1.08B
$1K ﹤0.01%
20
EWUS icon
1837
iShares MSCI United Kingdom Small-Cap ETF
EWUS
$43.4M
$1K ﹤0.01%
15
EWW icon
1838
iShares MSCI Mexico ETF
EWW
$1.9B
$1K ﹤0.01%
20
EWZS icon
1839
iShares MSCI Brazil Small-Cap ETF
EWZS
$209M
$1K ﹤0.01%
60
FCOM icon
1840
Fidelity MSCI Communication Services Index ETF
FCOM
$1.76B
$1K ﹤0.01%
+25
New +$1.38K
FIW icon
1841
First Trust Water ETF
FIW
$1.92B
$1K ﹤0.01%
9
FSTA icon
1842
Fidelity MSCI Consumer Staples Index ETF
FSTA
$1.42B
$1K ﹤0.01%
+30
New +$1.3K
GURU icon
1843
Global X Guru Index ETF
GURU
$64M
$1K ﹤0.01%
+24
New +$1.18K
NORW icon
1844
Global X MSCI Norway ETF
NORW
$87.7M
$1K ﹤0.01%
26
XES icon
1845
State Street SPDR S&P Oil & Gas Equipment & Services ETF
XES
$390M
$1K ﹤0.01%
23
-50
-68% -$2.65K
AGT
1846
DELISTED
iShares MSCI Argentina and Global Exposure ETF
AGT
$1K ﹤0.01%
40
AGL icon
1847
Agilon Health
AGL
$1.45B
-600
Closed -$609K
AIEQ icon
1848
Amplify AI Powered Equity ETF
AIEQ
$124M
$0 ﹤0.01%
+6
New +$251
AIN icon
1849
Albany International
AIN
$1.81B
-4,434
Closed -$396K
ALSN icon
1850
Allison Transmission
ALSN
$10.2B
-15,176
Closed -$603K

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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.