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William Blair & Company

William Blair & Company Portfolio holdings

AUM $34.9B
1-Year Est. Return 18.88%
This Fund
S&P 500
This Quarter Est. Return
+8.27%
1 Year Est. Return
+18.88%
3 Year Est. Return
+73.84%
5 Year Est. Return
+90.13%
10 Year Est. Return
+563.35%
AUM
$31.9B
AUM Growth
+$2.51B
Cap. Flow
+$830M
Cap. Flow %
2.6%
Top 10 Hldgs %
23.75%
Holding
2,051
New
174
Increased
889
Reduced
606
Closed
88

Top Buys

Rank Stock Value
1
AMZN icon
Amazon
AMZN
+$66.8M
2
PODD icon
Insulet
PODD
+$47M
3
XMTR icon
Xometry
XMTR
+$44.1M
4
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$43.7M
5
AON icon
Aon
AON
+$36.1M

Top Sells

Rank Stock Value
1
PYPL icon
PayPal
PYPL
+$73.8M
2
ATVI
Activision Blizzard
ATVI
+$46.9M
3
OSH
Oak Street Health, Inc.
OSH
+$43.6M
4
DIS icon
Walt Disney
DIS
+$34M
5
PGR icon
Progressive
PGR
+$32.6M

Sector Composition

Rank Sector Weight
1 Technology 26.2%
2 Healthcare 19.21%
3 Financials 10.7%
4 Consumer Discretionary 10.6%
5 Industrials 10.38%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
ROKU icon
126
Roku
ROKU
$22.6B
$55.4M 0.17%
242,908
+15,280
+7% +$4.12M
WST icon
127
West Pharmaceutical
WST
$24.9B
$54.6M 0.17%
116,468
-1,026
-0.9% -$442K
CVS icon
128
CVS Health
CVS
$122B
$54M 0.17%
523,032
+113,532
+28% +$10.5M
VUG icon
129
Vanguard Morningstar Growth ETF
VUG
$231B
$53.5M 0.17%
1,000,650
-15,096
-1% -$786K
ORLY icon
130
O'Reilly Automotive
ORLY
$76B
$53.4M 0.17%
1,134,435
+15,630
+1% +$676K
IWV icon
131
iShares Russell 3000 ETF
IWV
$20.3B
$52.9M 0.17%
190,610
-9,141
-5% -$2.48M
BALL icon
132
Ball Corp
BALL
$16.8B
$51.9M 0.16%
539,011
+2,808
+0.5% +$260K
BA icon
133
Boeing
BA
$183B
$50.8M 0.16%
252,374
-16,095
-6% -$3.4M
IBM icon
134
IBM
IBM
$222B
$50.3M 0.16%
376,390
-7,541
-2% -$946K
MDT icon
135
Medtronic
MDT
$110B
$49.7M 0.16%
480,268
-8,788
-2% -$1.02M
EXAS
136
DELISTED
Exact Sciences
EXAS
$49.2M 0.15%
631,664
-23,238
-4% -$2.05M
XYZ
137
Block Inc
XYZ
$47B
$49M 0.15%
303,403
-10,292
-3% -$2.23M
HOLX
138
DELISTED
Hologic
HOLX
$47.8M 0.15%
624,456
-30,516
-5% -$2.24M
CME icon
139
CME Group
CME
$95.7B
$47.3M 0.15%
206,836
+19,070
+10% +$4.2M
NEE icon
140
NextEra Energy
NEE
$178B
$46.8M 0.15%
500,964
+31,013
+7% +$2.68M
XMTR icon
141
Xometry
XMTR
$5.29B
$46.2M 0.14%
901,648
+857,158
+1,927% +$44.1M
PODD icon
142
Insulet
PODD
$9.72B
$46.2M 0.14%
173,639
+162,158
+1,412% +$47M
UPS icon
143
United Parcel Service
UPS
$89.2B
$46.1M 0.14%
214,911
+5,895
+3% +$1.2M
OPRX icon
144
OptimizeRx
OPRX
$131M
$45.4M 0.14%
730,674
-9,033
-1% -$685K
VZ icon
145
Verizon
VZ
$195B
$44.6M 0.14%
858,984
-158,170
-16% -$8.25M
CCI icon
146
Crown Castle
CCI
$32.4B
$43.3M 0.14%
207,470
+12,013
+6% +$2.22M
MMM icon
147
3M
MMM
$94.4B
$43.1M 0.14%
290,172
+10,330
+4% +$1.54M
GILD icon
148
Gilead Sciences
GILD
$166B
$42.8M 0.13%
589,067
+12,984
+2% +$894K
PCTY icon
149
Paylocity
PCTY
$8.16B
$42M 0.13%
177,666
-2,092
-1% -$555K
SMG icon
150
ScottsMiracle-Gro
SMG
$3.72B
$41.8M 0.13%
259,423
+8,717
+3% +$1.35M
4 5
6
7 8

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William Blair & Company's Q4 2021 Portfolio in Review

As of Q4 2021, William Blair & Company held 2,051 positions worth $31.9B, up 8.5% from $29.4B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q4 2021 filing shows 174 new, 889 increased, 606 reduced and 88 closed positions. Its largest new stake was Portillo's: 759,814 shares worth $28.5M. The largest sale was PayPal, an estimated $73.8M.

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 Q4 2021 buy was Portillo's: 759,814 shares worth $28.5M.
  • William Blair & Company added most to Amazon in Q4 2021, an estimated $66.8M increase.
  • William Blair & Company's biggest Q4 2021 reduction was PayPal, cutting an estimated $73.8M.
  • William Blair & Company fully exited Asana in Q4 2021, selling an estimated $6.06M.
  • William Blair & Company's ten largest holdings make up 24% of its $31.9B portfolio in Q4 2021.
  • William Blair & Company opened 174 new positions and closed 88 in Q4 2021.
  • William Blair & Company's portfolio value rose 8.5% quarter-over-quarter to $31.9B.

Based on William Blair & Company's 13F filing for Q4 2021, filed 14 Feb 2022.