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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
MPWR icon
326
Monolithic Power Systems
MPWR
$70B
$8.24M 0.04%
23,295
+3,396
+17% +$1.22M
SHAK icon
327
Shake Shack
SHAK
$2.94B
$8.24M 0.04%
198,320
-5,838
-3% -$284K
PH icon
328
Parker-Hannifin
PH
$135B
$8.24M 0.04%
28,302
+877
+3% +$251K
NVS icon
329
Novartis
NVS
$290B
$8.23M 0.04%
90,720
-8,130
-8% -$685K
BABA icon
330
Alibaba
BABA
$300B
$8.22M 0.04%
93,335
-12,545
-12% -$989K
OPCH icon
331
Option Care Health
OPCH
$3.57B
$8.19M 0.04%
272,136
-27,144
-9% -$843K
XLK icon
332
State Street Technology Select Sector SPDR ETF
XLK
$124B
$8.08M 0.04%
129,876
-8,580
-6% -$545K
IVW icon
333
iShares S&P 500 Growth ETF
IVW
$77.3B
$8M 0.03%
136,755
+17,327
+15% +$1.04M
MET icon
334
MetLife
MET
$61.4B
$7.89M 0.03%
109,061
+2,807
+3% +$201K
IWN icon
335
iShares Russell 2000 Value ETF
IWN
$14.6B
$7.87M 0.03%
56,720
+19,113
+51% +$2.7M
ILMN icon
336
Illumina
ILMN
$29.1B
$7.75M 0.03%
39,404
+1,220
+3% +$253K
HHS icon
337
Harte-Hanks
HHS
$18.6M
$7.73M 0.03%
660,839
– –
MRCY icon
338
Mercury Systems
MRCY
$6.7B
$7.68M 0.03%
171,716
-2,417
-1% -$114K
TAN icon
339
Invesco Solar ETF
TAN
$1.37B
$7.64M 0.03%
104,681
+13,388
+15% +$1.01M
HSY icon
340
Hershey
HSY
$37B
$7.63M 0.03%
32,932
-106
-0.3% -$24.4K
WM icon
341
Waste Management
WM
$90.5B
$7.61M 0.03%
48,499
+2,343
+5% +$377K
GLW icon
342
Corning
GLW
$144B
$7.54M 0.03%
236,187
-1,712
-0.7% -$55.5K
SITE icon
343
SiteOne Landscape Supply
SITE
$4.22B
$7.51M 0.03%
64,024
-1,827
-3% -$213K
MCK icon
344
McKesson
MCK
$102B
$7.5M 0.03%
19,997
-865
-4% -$323K
SNPS icon
345
Synopsys
SNPS
$79B
$7.42M 0.03%
23,246
+10,202
+78% +$3.19M
BKI
346
DELISTED
Black Knight, Inc. Common Stock
BKI
$7.39M 0.03%
119,689
-8,469
-7% -$515K
MTN icon
347
Vail Resorts
MTN
$5.29B
$7.37M 0.03%
30,928
-2,757
-8% -$647K
RGEN icon
348
Repligen
RGEN
$9.35B
$7.36M 0.03%
43,494
+4,103
+10% +$744K
ZM icon
349
Zoom
ZM
$30.8B
$7.33M 0.03%
108,189
-10,696
-9% -$812K
TPL icon
350
Texas Pacific Land
TPL
$23.6B
$7.33M 0.03%
28,134
-1,080
-4% -$286K
12 13
14
15 16

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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.