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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
XT icon
1101
iShares Future Exponential Technologies ETF
XT
$4.01B
$575K ﹤0.01%
9,160
– –
USFR
1102
DELISTED
WisdomTree Bloomberg Floating Rate Treasury Fund
USFR
$573K ﹤0.01%
22,821
-17,750
-44% -$446K
BPMC
1103
DELISTED
Blueprint Medicines
BPMC
$571K ﹤0.01%
5,555
+2,486
+81% +$232K
AMED
1104
DELISTED
Amedisys
AMED
$570K ﹤0.01%
3,824
-10,855
-74% -$2.26M
PPLI
1105
People Inc
PPLI
$3.01B
$569K ﹤0.01%
5,322
-378
-7% -$41.7K
JCI icon
1106
Johnson Controls International
JCI
$91.7B
$569K ﹤0.01%
8,360
+519
+7% +$37.5K
CBRL icon
1107
Cracker Barrel
CBRL
$1.31B
$566K ﹤0.01%
4,045
– –
CDNS icon
1108
Cadence Design Systems
CDNS
$89.2B
$565K ﹤0.01%
3,730
+388
+12% +$59.1K
MBB icon
1109
iShares MBS ETF
MBB
$39.2B
$565K ﹤0.01%
5,228
-3,891
-43% -$422K
XPO icon
1110
XPO
XPO
$24.7B
$564K ﹤0.01%
11,924
-6,827
-36% -$342K
CVET
1111
DELISTED
Covetrus, Inc. Common Stock
CVET
$563K ﹤0.01%
31,027
-616
-2% -$14.1K
DFAT icon
1112
Dimensional US Targeted Value ETF
DFAT
$14.8B
$559K ﹤0.01%
12,601
– –
IEUR icon
1113
iShares Core MSCI Europe ETF
IEUR
$9.15B
$559K ﹤0.01%
9,970
-170
-2% -$9.91K
CRNC icon
1114
Cerence
CRNC
$389M
$555K ﹤0.01%
5,770
-98
-2% -$10.7K
IYF icon
1115
iShares US Financials ETF
IYF
$4.44B
$555K ﹤0.01%
6,722
– –
MAA icon
1116
Mid-America Apartment Communities
MAA
$15.6B
$552K ﹤0.01%
+2,954
New +$554K
CHDN icon
1117
Churchill Downs
CHDN
$6.2B
$551K ﹤0.01%
4,590
-100
-2% -$10.2K
CHE icon
1118
Chemed
CHE
$7.02B
$551K ﹤0.01%
+1,184
New +$558K
HST icon
1119
Host Hotels & Resorts
HST
$15.6B
$551K ﹤0.01%
33,759
-223
-0.7% -$3.62K
FIRY
1120
Firy Inc
FIRY
$158M
$551K ﹤0.01%
2,807
-7,500
-73% -$1.94M
SCHV
1121
Schwab US Large-Cap Value ETF
SCHV
$16.3B
$550K ﹤0.01%
24,453
+14,754
+152% +$341K
SE icon
1122
Sea Limited
SE
$75.5B
$547K ﹤0.01%
1,715
-19
-1% -$5.83K
IYH icon
1123
iShares US Healthcare ETF
IYH
$3.77B
$546K ﹤0.01%
9,885
-375
-4% -$21.4K
PFGC icon
1124
Performance Food Group
PFGC
$16.4B
$544K ﹤0.01%
+11,714
New +$539K
MITK icon
1125
Mitek Systems
MITK
$853M
$542K ﹤0.01%
29,312
-5,633
-16% -$114K
43 44
45
46 47

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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.