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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
IHF icon
1676
iShares US Healthcare Providers ETF
IHF
$1.27B
$40K ﹤0.01%
790
IQDG icon
1677
WisdomTree International Quality Dividend Growth Fund
IQDG
$731M
$40K ﹤0.01%
1,062
IQLT icon
1678
iShares MSCI Intl Quality Factor ETF
IQLT
$14.3B
$40K ﹤0.01%
1,064
BMVP icon
1679
Invesco Bloomberg MVP Multi-factor ETF
BMVP
$106M
$39K ﹤0.01%
990
MCHI icon
1680
iShares MSCI China ETF
MCHI
$6.21B
$39K ﹤0.01%
581
-66
-10% -$4.75K
XTN icon
1681
State Street SPDR S&P Transportation ETF
XTN
$392M
$39K ﹤0.01%
450
IBDP
1682
DELISTED
iShares iBonds Dec 2024 Term Corporate ETF
IBDP
$39K ﹤0.01%
1,500
FCVT icon
1683
First Trust SSI Strategic Convertible Securities ETF
FCVT
$103M
$38K ﹤0.01%
743
EWL icon
1684
iShares MSCI Switzerland ETF
EWL
$2.22B
$37K ﹤0.01%
785
-90
-10% -$4.47K
EWQ icon
1685
iShares MSCI France ETF
EWQ
$333M
$36K ﹤0.01%
963
NEAR icon
1686
iShares Short Maturity Bond ETF
NEAR
$4.88B
$36K ﹤0.01%
718
-1,499
-68% -$75.2K
NMTR
1687
DELISTED
9 Meters Biopharma
NMTR
$36K ﹤0.01%
1,400
ISCG icon
1688
iShares Morningstar Small-Cap Growth ETF
ISCG
$1.02B
$35K ﹤0.01%
720
STPZ icon
1689
PIMCO 1-5 Year US TIPS Index Exchange-Traded Fund
STPZ
$524M
$35K ﹤0.01%
645
COPX icon
1690
Global X Copper Miners ETF NEW
COPX
$8.22B
$34K ﹤0.01%
1,004
-46
-4% -$1.67K
DFJ icon
1691
WisdomTree Japan SmallCap Dividend Fund
DFJ
$402M
$34K ﹤0.01%
438
GSIE icon
1692
Goldman Sachs ActiveBeta International Equity ETF
GSIE
$6.14B
$34K ﹤0.01%
991
HYMB icon
1693
State Street SPDR Nuveen ICE High Yield Municipal Bond ETF
HYMB
$3.36B
$34K ﹤0.01%
1,140
-200
-15% -$6.07K
IGLB icon
1694
iShares 10+ Year Investment Grade Corporate Bond ETF
IGLB
$2.78B
$34K ﹤0.01%
488
ILCG icon
1695
iShares Morningstar Growth ETF
ILCG
$3.28B
$34K ﹤0.01%
520
FPEI icon
1696
First Trust Institutional Preferred Securities and Income ETF
FPEI
$1.94B
$33K ﹤0.01%
1,590
+17
+1% +$353
GBF icon
1697
iShares Government/Credit Bond ETF
GBF
$128M
$33K ﹤0.01%
270
-120
-31% -$14.8K
IXP icon
1698
iShares Global Comm Services ETF
IXP
$561M
$32K ﹤0.01%
380
DFTX
1699
Definium Therapeutics
DFTX
$5.75B
$32K ﹤0.01%
885
-177
-17% -$7.65K
SCHZ icon
1700
Schwab US Aggregate Bond ETF
SCHZ
$10.5B
$32K ﹤0.01%
+1,174
New +$32.2K

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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.