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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
FTV icon
76
Fortive
FTV
$18.5B
$101M 0.32%
1,758,275
-153,956
-8% -$8.7M
MDB icon
77
MongoDB
MDB
$31.4B
$101M 0.32%
190,700
-1,255
-0.7% -$643K
MCD icon
78
McDonald's
MCD
$196B
$101M 0.32%
376,508
+23,437
+7% +$5.92M
VRSK icon
79
Verisk Analytics
VRSK
$24.5B
$100M 0.31%
437,965
-6,949
-2% -$1.52M
VIG icon
80
Vanguard Dividend Appreciation ETF
VIG
$114B
$99.1M 0.31%
576,912
+8,689
+2% +$1.43M
BRK.B icon
81
Berkshire Hathaway Class B
BRK.B
$1.12T
$98M 0.31%
327,647
+13,492
+4% +$3.86M
YETI icon
82
Yeti Holdings
YETI
$3.94B
$96.2M 0.3%
1,160,911
+6,450
+0.6% +$592K
LIN icon
83
Linde
LIN
$227B
$96M 0.3%
277,178
-5,649
-2% -$1.83M
NKE icon
84
Nike
NKE
$62.5B
$91.1M 0.29%
546,363
+950
+0.2% +$157K
LYV icon
85
Live Nation Entertainment
LYV
$42.6B
$90.9M 0.29%
759,739
+13,232
+2% +$1.43M
IRTC icon
86
iRhythm Holdings
IRTC
$4.16B
$88.9M 0.28%
755,055
+64,831
+9% +$5.95M
U icon
87
Unity
U
$19.1B
$88.7M 0.28%
620,025
-9,373
-1% -$1.43M
MCHP icon
88
Microchip Technology
MCHP
$45.1B
$86.4M 0.27%
992,135
+25,529
+3% +$2.07M
P
89
Everpure Inc
P
$29.4B
$86.1M 0.27%
2,643,767
+234,351
+10% +$6.8M
PEP icon
90
PepsiCo
PEP
$188B
$84.7M 0.27%
487,720
+24,592
+5% +$4.02M
SPT icon
91
Sprout Social
SPT
$620M
$81.8M 0.26%
902,252
-79,338
-8% -$8.99M
VEU icon
92
Vanguard FTSE All-World ex-US ETF
VEU
$68.6B
$81.4M 0.26%
1,327,927
+312,784
+31% +$19.4M
LOW icon
93
Lowe's Companies
LOW
$124B
$80.7M 0.25%
312,088
+14,352
+5% +$3.41M
TRMB icon
94
Trimble
TRMB
$13.6B
$80.5M 0.25%
923,550
+8,221
+0.9% +$706K
ANET icon
95
Arista Networks
ANET
$246B
$78.6M 0.25%
2,186,448
-32,736
-1% -$977K
ZBRA icon
96
Zebra Technologies
ZBRA
$17.7B
$78.4M 0.25%
131,728
-3,524
-3% -$2M
NFLX icon
97
Netflix
NFLX
$307B
$78.4M 0.25%
1,300,830
+22,150
+2% +$1.42M
ADP icon
98
Automatic Data Processing
ADP
$108B
$78M 0.24%
316,282
+10,681
+3% +$2.42M
SPLK
99
DELISTED
Splunk Inc
SPLK
$77.8M 0.24%
672,352
-104,739
-13% -$14.6M
INFO
100
DELISTED
IHS Markit Ltd. Common Shares
INFO
$77.7M 0.24%
584,295
-6,531
-1% -$832K
2 3
4
5 6

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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.