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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
VOO icon
176
Vanguard S&P 500 ETF
VOO
$1.03T
$30M 0.1%
76,158
+2,086
+3% +$846K
PHR icon
177
Phreesia
PHR
$758M
$30M 0.1%
485,494
+12,976
+3% +$866K
GWW icon
178
W.W. Grainger
GWW
$61.5B
$29.9M 0.1%
75,942
-784
-1% -$340K
GDYN icon
179
Grid Dynamics Holdings
GDYN
$632M
$29.8M 0.1%
1,018,990
+65,775
+7% +$1.61M
TDOC icon
180
Teladoc Health
TDOC
$1.22B
$29.6M 0.1%
233,729
-13,749
-6% -$2M
WEX icon
181
WEX
WEX
$6.48B
$29.6M 0.1%
168,165
-44,656
-21% -$8.14M
IWD icon
182
iShares Russell 1000 Value ETF
IWD
$84B
$29.1M 0.1%
185,993
-26,932
-13% -$4.32M
XOM icon
183
ExxonMobil
XOM
$657B
$29M 0.1%
492,378
+49,150
+11% +$2.8M
CSCO icon
184
Cisco
CSCO
$488B
$28.5M 0.1%
522,893
+42,705
+9% +$2.4M
CMCSA icon
185
Comcast
CMCSA
$90.4B
$28.3M 0.1%
505,491
+197
+0% +$11.5K
SMAR
186
DELISTED
Smartsheet Inc.
SMAR
$28.3M 0.1%
410,514
+5,352
+1% +$393K
DT icon
187
Dynatrace
DT
$14.3B
$28M 0.1%
394,939
+102,709
+35% +$6.73M
EMR icon
188
Emerson Electric
EMR
$91.4B
$28M 0.1%
297,014
-66,183
-18% -$6.6M
AKAM icon
189
Akamai
AKAM
$17.6B
$27.5M 0.09%
262,732
+8,031
+3% +$918K
AGG icon
190
iShares Core US Aggregate Bond ETF
AGG
$138B
$27.5M 0.09%
239,215
-2,765
-1% -$320K
TGT icon
191
Target
TGT
$69.9B
$27.3M 0.09%
119,436
+5,045
+4% +$1.26M
AXON
192
Axon Enterprise
AXON
$48.7B
$27.3M 0.09%
155,877
+22,028
+16% +$4M
ITOT icon
193
iShares Core S&P Total US Stock Market ETF
ITOT
$97.8B
$27M 0.09%
274,679
-10,124
-4% -$1.02M
SYY icon
194
Sysco
SYY
$40.5B
$26.6M 0.09%
338,291
+4,343
+1% +$331K
PXD
195
DELISTED
Pioneer Natural Resource Co.
PXD
$26.5M 0.09%
159,385
-1,805
-1% -$273K
GS icon
196
Goldman Sachs
GS
$302B
$26.5M 0.09%
70,170
-236
-0.3% -$92.2K
IWB icon
197
iShares Russell 1000 ETF
IWB
$50.2B
$26.3M 0.09%
108,973
-2,365
-2% -$588K
DIA icon
198
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$48.2B
$26.1M 0.09%
77,179
+2,971
+4% +$1.04M
RPAY icon
199
Repay Holdings
RPAY
$311M
$25.9M 0.09%
1,126,489
-52,668
-4% -$1.24M
NTRS icon
200
Northern Trust
NTRS
$35B
$25.9M 0.09%
240,038
+9,687
+4% +$1.1M
6 7
8
9 10

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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.