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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
+8.67%
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
$23B
AUM Growth
+$1.22B
Cap. Flow
-$156M
Cap. Flow %
-0.68%
Top 10 Hldgs %
22.7%
Holding
1,905
New
81
Increased
568
Reduced
855
Closed
91

Top Buys

Rank Stock Value
1
POOL icon
Pool Corp
POOL
+$43.2M
2
TEAM icon
Atlassian
TEAM
+$36.6M
3
NOVT icon
Novanta
NOVT
+$28.8M
4
PANW icon
Palo Alto Networks
PANW
+$23.2M
5
MSI icon
Motorola Solutions
MSI
+$20.1M

Top Sells

Rank Stock Value
1
ABMD
Abiomed Inc
ABMD
+$103M
2
PYPL icon
PayPal
PYPL
+$28.4M
3
DIS icon
Walt Disney
DIS
+$26.7M
4
KMX icon
CarMax
KMX
+$25.2M
5
CRM icon
Salesforce
CRM
+$24.3M

Sector Composition

Rank Sector Weight
1 Technology 22.31%
2 Healthcare 19.82%
3 Financials 12.49%
4 Industrials 11.58%
5 Consumer Discretionary 8.46%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
PCTY icon
151
Paylocity
PCTY
$7.73B
$29.3M 0.13%
150,907
-4,798
-3% -$1.03M
HOLX
152
DELISTED
Hologic
HOLX
$29.1M 0.13%
388,702
-94,301
-20% -$6.72M
ITOT icon
153
iShares Core S&P Total US Stock Market ETF
ITOT
$97.8B
$28.6M 0.12%
337,606
-44,634
-12% -$3.81M
PAYX icon
154
Paychex
PAYX
$42.8B
$28.2M 0.12%
244,200
-4,006
-2% -$469K
TRMB icon
155
Trimble
TRMB
$13.1B
$28.1M 0.12%
556,723
-25,544
-4% -$1.42M
AMGN icon
156
Amgen
AMGN
$225B
$28.1M 0.12%
107,043
-2,000
-2% -$536K
DOCU
157
DocuSign
DOCU
$11.1B
$27.9M 0.12%
502,819
-170,518
-25% -$8.3M
ZBRA icon
158
Zebra Technologies
ZBRA
$17.9B
$27.4M 0.12%
107,055
-8,793
-8% -$2.27M
TGT icon
159
Target
TGT
$69.9B
$27.1M 0.12%
181,940
+7,173
+4% +$1.13M
HEI icon
160
HEICO Corp
HEI
$52.1B
$26.6M 0.12%
172,938
-2,582
-1% -$402K
DVAX
161
DELISTED
Dynavax Technologies
DVAX
$26.5M 0.12%
2,486,269
+25,528
+1% +$297K
TREX icon
162
Trex
TREX
$5.05B
$26.4M 0.11%
623,591
-238,840
-28% -$10.8M
CCI icon
163
Crown Castle
CCI
$31.5B
$25.9M 0.11%
190,815
-12,448
-6% -$1.68M
BRK.A icon
164
Berkshire Hathaway Class A
BRK.A
$1.09T
$25.8M 0.11%
55
+2
+4% +$898K
CCOI icon
165
Cogent Communications
CCOI
$525M
$25.5M 0.11%
446,619
-41,883
-9% -$2.3M
ANET icon
166
Arista Networks
ANET
$265B
$25.2M 0.11%
830,172
-10,072
-1% -$310K
WEX icon
167
WEX
WEX
$6.48B
$25.2M 0.11%
153,806
-4,083
-3% -$636K
EL icon
168
Estee Lauder
EL
$31.7B
$24.9M 0.11%
100,167
-631
-0.6% -$141K
VMI icon
169
Valmont Industries
VMI
$9.52B
$24.5M 0.11%
74,044
-3,390
-4% -$1.08M
TIP icon
170
iShares TIPS Bond ETF
TIP
$14.7B
$24.2M 0.11%
227,727
-35,175
-13% -$3.76M
CL icon
171
Colgate-Palmolive
CL
$73.6B
$24.2M 0.11%
307,454
-15,772
-5% -$1.18M
IWF icon
172
iShares Russell 1000 Growth ETF
IWF
$128B
$23.7M 0.1%
443,048
-36,664
-8% -$2.02M
GLD icon
173
SPDR Gold Trust
GLD
$144B
$23.6M 0.1%
138,945
-28,715
-17% -$4.63M
WST icon
174
West Pharmaceutical
WST
$24.8B
$23.2M 0.1%
98,406
-4,242
-4% -$1.01M
TSLA icon
175
Tesla
TSLA
$1.29T
$22.8M 0.1%
185,078
-6,657
-3% -$1.26M
5 6
7
8 9

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William Blair & Company's Q4 2022 Portfolio in Review

As of Q4 2022, William Blair & Company held 1,905 positions worth $23B, up 5.6% from $21.8B the previous quarter. Its ten largest holdings account for 23% of the portfolio.

William Blair & Company's Q4 2022 filing shows 81 new, 568 increased, 855 reduced and 91 closed positions. Its largest new stake was Atlassian: 230,078 shares worth $29.6M. The largest sale was Abiomed Inc, an estimated $103M.

By sector, the portfolio is most concentrated in Technology at 22% of assets, down from 23% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q4 2022 buy was Atlassian: 230,078 shares worth $29.6M.
  • William Blair & Company added most to Pool Corp in Q4 2022, an estimated $43.2M increase.
  • William Blair & Company's biggest Q4 2022 reduction was PayPal, cutting an estimated $28.4M.
  • William Blair & Company fully exited Abiomed Inc in Q4 2022, selling an estimated $103M.
  • William Blair & Company's ten largest holdings make up 23% of its $23B portfolio in Q4 2022.
  • William Blair & Company opened 81 new positions and closed 91 in Q4 2022.
  • William Blair & Company's portfolio value rose 5.6% quarter-over-quarter to $23B.

Based on William Blair & Company's 13F filing for Q4 2022, filed 10 Feb 2023.