We are live on ! Find out more
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
HTGC icon
651
Hercules Capital
HTGC
$3.15B
$2.43M 0.01%
146,402
+2,460
+2% +$41.8K
FXH icon
652
First Trust Health Care AlphaDEX Fund
FXH
$1.11B
$2.43M 0.01%
20,404
+111
+0.5% +$13.6K
SRE icon
653
Sempra
SRE
$56.4B
$2.42M 0.01%
38,302
-2,778
-7% -$183K
SPDW icon
654
State Street SPDR Portfolio Developed World ex-US ETF
SPDW
$42.1B
$2.42M 0.01%
66,881
– –
WTFC icon
655
Wintrust Financial
WTFC
$11B
$2.42M 0.01%
30,078
+9,262
+44% +$684K
CALY
656
Callaway Golf Company
CALY
$3B
$2.42M 0.01%
87,390
-14,475
-14% -$440K
APPN icon
657
Appian
APPN
$2.45B
$2.39M 0.01%
25,787
+471
+2% +$52.2K
ET icon
658
Energy Transfer Partners
ET
$72.3B
$2.39M 0.01%
249,012
+25,786
+12% +$248K
SPEM icon
659
State Street SPDR Portfolio Emerging Markets ETF
SPEM
$17.7B
$2.38M 0.01%
55,869
-654
-1% -$28.4K
LHCG
660
DELISTED
LHC Group LLC
LHCG
$2.37M 0.01%
15,110
-9,860
-39% -$1.85M
JBTM
661
JBT Marel
JBTM
$6.01B
$2.37M 0.01%
16,848
-1,344
-7% -$193K
ARKK icon
662
ARK Innovation ETF
ARKK
$6.48B
$2.37M 0.01%
21,393
+6,224
+41% +$749K
VAW icon
663
Vanguard Materials ETF
VAW
$3.05B
$2.36M 0.01%
13,613
+687
+5% +$125K
STE icon
664
Steris
STE
$22.9B
$2.35M 0.01%
11,518
+456
+4% +$97.6K
EVER icon
665
EverQuote
EVER
$868M
$2.35M 0.01%
126,190
+50,376
+66% +$1.21M
RY icon
666
Royal Bank of Canada
RY
$298B
$2.32M 0.01%
23,318
-986
-4% -$100K
SLV icon
667
iShares Silver Trust
SLV
$31.6B
$2.32M 0.01%
113,009
+8,691
+8% +$195K
VLO icon
668
Valero Energy
VLO
$97.1B
$2.32M 0.01%
32,844
-1,225
-4% -$81.5K
CLX icon
669
Clorox
CLX
$12.7B
$2.29M 0.01%
13,838
-6,857
-33% -$1.18M
AMG icon
670
Affiliated Managers Group
AMG
$9.63B
$2.27M 0.01%
15,003
-27
-0.2% -$4.42K
OEF icon
671
iShares S&P 100 ETF
OEF
$20.5B
$2.27M 0.01%
11,478
-884
-7% -$180K
ITT icon
672
ITT
ITT
$19.3B
$2.26M 0.01%
26,345
-250
-0.9% -$23.5K
FBC
673
DELISTED
Flagstar Bancorp, Inc. New
FBC
$2.26M 0.01%
44,500
– –
SUSA icon
674
iShares ESG Optimized MSCI USA ETF
SUSA
$4.2B
$2.26M 0.01%
23,545
+538
+2% +$53.2K
BND icon
675
Vanguard Total Bond Market
BND
$161B
$2.25M 0.01%
26,297
-2,093
-7% -$181K
25 26
27
28 29

Similar funds

Parallax Volatility Advisers
Parallax Volatility Advisers San Francisco, California $38.6B AUM 45.89% 1-Year Est. Return
Credit Agricole
Credit Agricole Montrouge Cedex, France $38.1B AUM
Carson Wealth (CWM LLC)
Carson Wealth (CWM LLC) Omaha, Nebraska $38.1B AUM 19.66% 1-Year Est. Return
Nomura Holdings
Nomura Holdings Tokyo, Japan $37.7B AUM 34.44% 1-Year Est. Return
Fayez Sarofim & Co
Fayez Sarofim & Co Houston, Texas $39.1B AUM 15.14% 1-Year Est. Return
HF
HRT Financial New York $40.1B AUM 58.22% 1-Year Est. Return
First Manhattan
First Manhattan New York $36.1B AUM 11.5% 1-Year Est. Return
Viking Global Investors
Viking Global Investors Stamford, Connecticut $35.7B AUM 21.3% 1-Year Est. Return

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.