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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
DOX icon
1351
Amdocs
DOX
$6.12B
$280K ﹤0.01%
3,694
+8
+0.2% +$619
ENV
1352
DELISTED
ENVESTNET, INC.
ENV
$279K ﹤0.01%
3,472
-12,638
-78% -$966K
MGV icon
1353
Vanguard Morningstar Mega Cap Value ETF
MGV
$13.7B
$278K ﹤0.01%
2,841
– –
IDCC icon
1354
InterDigital
IDCC
$8.84B
$277K ﹤0.01%
4,080
– –
TILT icon
1355
FlexShares Morningstar US Market Factors Tilt Index Fund
TILT
$2.27B
$277K ﹤0.01%
1,641
– –
KDNY
1356
DELISTED
Chinook Therapeutics, Inc. Common Stock
KDNY
$276K ﹤0.01%
21,650
+10,900
+101% +$143K
EWH icon
1357
iShares MSCI Hong Kong ETF
EWH
$1.21B
$274K ﹤0.01%
11,413
-70
-0.6% -$1.8K
ONC
1358
BeOne Medicines Ltd
ONC
$40.3B
$272K ﹤0.01%
750
-50
-6% -$16.3K
BUSE icon
1359
First Busey Corp
BUSE
$2.6B
$271K ﹤0.01%
11,000
– –
XNTK icon
1360
State Street SPDR NYSE Technology ETF
XNTK
$2.28B
$271K ﹤0.01%
1,734
– –
TRGP icon
1361
Targa Resources
TRGP
$57.9B
$269K ﹤0.01%
5,468
-848
-13% -$37.3K
XHB icon
1362
State Street SPDR S&P Homebuilders ETF
XHB
$1.6B
$269K ﹤0.01%
3,753
+50
+1% +$3.76K
TKR icon
1363
Timken Company
TKR
$9.08B
$266K ﹤0.01%
4,073
-54
-1% -$4.01K
AL
1364
DELISTED
Air Lease Corp
AL
$265K ﹤0.01%
6,735
– –
CORP icon
1365
PIMCO Investment Grade Corporate Bond Index Exchange-Traded Fund
CORP
$1.58B
$265K ﹤0.01%
2,334
-1,429
-38% -$164K
CXM icon
1366
Sprinklr
CXM
$1.57B
$265K ﹤0.01%
+15,128
New +$282K
FFIV icon
1367
F5
FFIV
$23.8B
$263K ﹤0.01%
1,321
-33
-2% -$6.6K
SAM icon
1368
Boston Beer
SAM
$1.89B
$263K ﹤0.01%
515
-195
-27% -$133K
XLG icon
1369
Invesco S&P 500 Top 50 ETF
XLG
$11B
$262K ﹤0.01%
7,950
– –
DRE
1370
DELISTED
Duke Realty Corp.
DRE
$262K ﹤0.01%
5,464
+50
+0.9% +$2.52K
BIO icon
1371
Bio-Rad Laboratories Class A
BIO
$9.61B
$261K ﹤0.01%
350
-12
-3% -$8.99K
FTS icon
1372
Fortis
FTS
$28.9B
$261K ﹤0.01%
5,897
– –
SPOT icon
1373
Spotify
SPOT
$102B
$261K ﹤0.01%
1,158
+50
+5% +$11.8K
TTC icon
1374
Toro Company
TTC
$9.25B
$261K ﹤0.01%
2,678
– –
WTRG icon
1375
Essential Utilities
WTRG
$11.5B
$261K ﹤0.01%
5,654
+100
+2% +$4.84K
53 54
55
56 57

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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.