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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
AVY icon
751
Avery Dennison
AVY
$13.5B
$1.67M 0.01%
8,037
+492
+7% +$106K
SWK icon
752
Stanley Black & Decker
SWK
$15.5B
$1.66M 0.01%
9,479
-2,059
-18% -$402K
EA
753
DELISTED
Electronic Arts
EA
$1.66M 0.01%
11,670
-74
-0.6% -$10.4K
KMPR icon
754
Kemper
KMPR
$1.58B
$1.66M 0.01%
24,790
-2,874
-10% -$195K
BOOT icon
755
Boot Barn
BOOT
$4.94B
$1.66M 0.01%
18,625
-18,600
-50% -$1.6M
INSP icon
756
Inspire Medical Systems
INSP
$1.68B
$1.64M 0.01%
7,026
+499
+8% +$104K
MFC icon
757
Manulife Financial
MFC
$72.7B
$1.62M 0.01%
84,352
-7,910
-9% -$154K
PSX icon
758
Phillips 66
PSX
$92.1B
$1.62M 0.01%
23,120
+4,101
+22% +$297K
VNT icon
759
Vontier
VNT
$4.49B
$1.61M 0.01%
48,029
-32,494
-40% -$1.1M
NUE icon
760
Nucor
NUE
$62.1B
$1.61M 0.01%
16,339
+2,510
+18% +$267K
TRS icon
761
TriMas Corp
TRS
$1.41B
$1.6M 0.01%
49,581
-1,650
-3% -$50.9K
ELV icon
762
Elevance Health
ELV
$86.5B
$1.57M 0.01%
4,219
-635
-13% -$241K
IJT icon
763
iShares S&P Small-Cap 600 Growth ETF
IJT
$8.43B
$1.57M 0.01%
12,046
+572
+5% +$75.4K
MOAT icon
764
VanEck Morningstar Wide Moat ETF
MOAT
$12.5B
$1.57M 0.01%
21,381
+3,093
+17% +$233K
CIVB icon
765
Civista Bancshares
CIVB
$595M
$1.56M 0.01%
67,300
– –
XSD icon
766
State Street SPDR S&P Semiconductor ETF
XSD
$2.91B
$1.54M 0.01%
7,802
-488
-6% -$95.2K
RYN icon
767
Rayonier
RYN
$6.53B
$1.54M 0.01%
47,672
+1,901
+4% +$63.7K
DDMX
768
DELISTED
DD3 Acquisition Corp. II Class A Common Stock
DDMX
$1.52M 0.01%
153,768
– –
CLOV icon
769
Clover Health Investments
CLOV
$2.37B
$1.52M 0.01%
205,081
-13,719
-6% -$117K
NICE icon
770
Nice
NICE
$5.96B
$1.51M 0.01%
5,324
-15
-0.3% -$4.16K
GH icon
771
Guardant Health
GH
$21.6B
$1.51M 0.01%
12,087
-5,529
-31% -$657K
IVOG icon
772
Vanguard S&P Mid-Cap 400 Growth ETF
IVOG
$1.73B
$1.51M 0.01%
15,344
+20
+0.1% +$2.01K
HIMS icon
773
Hims & Hers Health
HIMS
$6.79B
$1.5M 0.01%
199,394
+75
+0% +$635
OTIS icon
774
Otis Worldwide
OTIS
$27.9B
$1.5M 0.01%
18,189
+736
+4% +$64.7K
AZTA icon
775
Azenta
AZTA
$1.49B
$1.49M 0.01%
14,583
-4,505
-24% -$404K
29 30
31
32 33

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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.