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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
NCNO icon
676
nCino
NCNO
$2.11B
$2.24M 0.01%
31,482
+26,663
+553% +$1.78M
EWU icon
677
iShares MSCI United Kingdom ETF
EWU
$4.13B
$2.23M 0.01%
69,084
+58,225
+536% +$1.91M
ACCD
678
DELISTED
Accolade Inc
ACCD
$2.22M 0.01%
52,736
+9,526
+22% +$448K
SNA icon
679
Snap-on
SNA
$20.9B
$2.22M 0.01%
10,615
-99
-0.9% -$21.9K
WELL icon
680
Welltower
WELL
$169B
$2.21M 0.01%
26,775
+697
+3% +$59.9K
LZ icon
681
LegalZoom.com
LZ
$956M
$2.19M 0.01%
+83,116
New +$2.92M
OPCH icon
682
Option Care Health
OPCH
$3.6B
$2.19M 0.01%
90,335
-99,239
-52% -$2.3M
MTCH icon
683
Match Group
MTCH
$8.41B
$2.18M 0.01%
13,894
+439
+3% +$66.8K
VRRM icon
684
Verra Mobility
VRRM
$711M
$2.18M 0.01%
144,439
+68,564
+90% +$1.05M
XEL icon
685
Xcel Energy
XEL
$49.4B
$2.17M 0.01%
34,750
-406
-1% -$27.4K
HUM icon
686
Humana
HUM
$46.2B
$2.17M 0.01%
5,575
-39
-0.7% -$16.6K
MTD icon
687
Mettler-Toledo International
MTD
$28.5B
$2.16M 0.01%
1,566
-339
-18% -$510K
VAPO
688
DELISTED
Vapotherm, Inc. Common Stock
VAPO
$2.14M 0.01%
12,034
+1,473
+14% +$299K
BAND
689
Bandwidth Inc
BAND
$1.73B
$2.14M 0.01%
23,711
+12,318
+108% +$1.42M
LRCX icon
690
Lam Research
LRCX
$430B
$2.11M 0.01%
37,130
+6,740
+22% +$410K
CYBR
691
DELISTED
CyberArk
CYBR
$2.11M 0.01%
13,383
+335
+3% +$50.9K
VTEB icon
692
Vanguard Tax-Exempt Bond Index Fund
VTEB
$46.1B
$2.1M 0.01%
38,429
-6,257
-14% -$346K
SPYG icon
693
State Street SPDR Portfolio S&P 500 Growth ETF
SPYG
$55.5B
$2.09M 0.01%
32,689
-4,010
-11% -$265K
DVN icon
694
Devon Energy
DVN
$48.7B
$2.09M 0.01%
58,874
+17,133
+41% +$486K
LGND icon
695
Ligand Pharmaceuticals
LGND
$5.74B
$2.08M 0.01%
23,912
+460
+2% +$35.6K
HCA icon
696
HCA Healthcare
HCA
$88.8B
$2.06M 0.01%
8,505
-38
-0.4% -$9.29K
NLY icon
697
Annaly Capital Management
NLY
$17.6B
$2.06M 0.01%
61,132
+7,008
+13% +$241K
BHC icon
698
Bausch Health
BHC
$2.34B
$2.05M 0.01%
73,720
+900
+1% +$25.5K
QRVO icon
699
Qorvo
QRVO
$8.69B
$2.05M 0.01%
12,266
+805
+7% +$150K
IDV icon
700
iShares International Select Dividend ETF
IDV
$8.53B
$2.04M 0.01%
66,988
+3,244
+5% +$104K
26 27
28
29 30

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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.