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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
BPOP icon
926
Popular Inc
BPOP
$11.3B
$983K ﹤0.01%
12,650
– –
TFI icon
927
State Street SPDR Nuveen ICE Municipal Bond ETF
TFI
$3.18B
$978K ﹤0.01%
18,973
+33
+0.2% +$1.72K
FLXN
928
DELISTED
Flexion Therapeutics, Inc.
FLXN
$978K ﹤0.01%
160,399
+10,299
+7% +$64.2K
DCI icon
929
Donaldson
DCI
$11.1B
$974K ﹤0.01%
16,965
-70
-0.4% -$4.51K
EFV icon
930
iShares MSCI EAFE Value ETF
EFV
$30.1B
$974K ﹤0.01%
19,161
-167
-0.9% -$8.65K
SMPL icon
931
Simply Good Foods
SMPL
$989M
$974K ﹤0.01%
28,240
+19,700
+231% +$708K
O icon
932
Realty Income
O
$59.6B
$973K ﹤0.01%
15,480
+326
+2% +$22K
NATI
933
DELISTED
National Instruments Corp
NATI
$971K ﹤0.01%
24,741
+165
+0.7% +$6.9K
QTEC icon
934
First Trust NASDAQ-100 Technology Index Fund
QTEC
$4.92B
$970K ﹤0.01%
6,145
-25
-0.4% -$4.06K
PCAR icon
935
PACCAR
PCAR
$68.8B
$969K ﹤0.01%
18,419
+197
+1% +$10.9K
RDS.A
936
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
$968K ﹤0.01%
21,724
+685
+3% +$27.6K
DHS icon
937
WisdomTree US High Dividend Fund
DHS
$1.6B
$967K ﹤0.01%
12,560
-270
-2% -$21.4K
LYB icon
938
LyondellBasell Industries
LYB
$20.2B
$966K ﹤0.01%
10,293
-918
-8% -$90.1K
XRAY icon
939
Dentsply Sirona
XRAY
$2.31B
$962K ﹤0.01%
16,578
-1,552
-9% -$95.7K
G icon
940
Genpact
G
$5.78B
$961K ﹤0.01%
20,227
-12,746
-39% -$633K
HQY icon
941
HealthEquity
HQY
$8.83B
$960K ﹤0.01%
14,827
+2,637
+22% +$183K
HUBS icon
942
HubSpot
HUBS
$12B
$957K ﹤0.01%
1,416
+120
+9% +$77.3K
BBEU icon
943
JPMorgan BetaBuilders Europe ETF
BBEU
$9.53B
$953K ﹤0.01%
16,706
-1,471
-8% -$87.5K
LNC icon
944
Lincoln National
LNC
$8.67B
$950K ﹤0.01%
13,818
+4,110
+42% +$268K
BBBY
945
Bed Bath & Beyond
BBBY
$423M
$949K ﹤0.01%
13,396
+8,494
+173% +$589K
EEFT icon
946
Euronet Worldwide
EEFT
$2.78B
$949K ﹤0.01%
7,455
+30
+0.4% +$3.98K
THRY icon
947
Thryv Holdings
THRY
$96.9M
$948K ﹤0.01%
31,545
+817
+3% +$25.6K
CIGI icon
948
Colliers International
CIGI
$5.41B
$947K ﹤0.01%
7,416
– –
PLAY icon
949
Dave & Buster's
PLAY
$370M
$947K ﹤0.01%
24,713
-14,308
-37% -$518K
TOTL icon
950
State Street DoubleLine Total Return Tactical ETF
TOTL
$4.01B
$943K ﹤0.01%
19,524
-118
-0.6% -$5.72K
36 37
38
39 40

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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.