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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
MCO icon
326
Moody's
MCO
$82.7B
$11.6M 0.04%
29,589
+300
+1% +$116K
PM icon
327
Philip Morris
PM
$295B
$11.5M 0.04%
121,192
+14,130
+13% +$1.32M
VXF icon
328
Vanguard Extended Market ETF
VXF
$31.7B
$11.4M 0.04%
62,082
+552
+0.9% +$104K
RDVY icon
329
First Trust Rising Dividend Achievers ETF
RDVY
$25.6B
$11.3M 0.04%
217,546
+151,665
+230% +$7.65M
COIN icon
330
Coinbase
COIN
$40.5B
$11.2M 0.04%
44,477
+8,439
+23% +$2.45M
PGX icon
331
Invesco Preferred ETF
PGX
$3.79B
$11.2M 0.04%
745,476
+534,241
+253% +$7.96M
AMRC icon
332
Ameresco
AMRC
$1.36B
$11.1M 0.03%
136,540
+80,692
+144% +$6.45M
FIS icon
333
Fidelity National Information Services
FIS
$22.1B
$10.9M 0.03%
100,070
+17,622
+21% +$1.99M
FND icon
334
Floor & Decor
FND
$6.68B
$10.8M 0.03%
82,787
-6,110
-7% -$787K
NOC icon
335
Northrop Grumman
NOC
$81.2B
$10.7M 0.03%
27,592
+10,416
+61% +$3.88M
TWTR
336
DELISTED
Twitter, Inc.
TWTR
$10.6M 0.03%
246,383
+4,846
+2% +$252K
KNSL icon
337
Kinsale Capital Group
KNSL
$8.51B
$10.6M 0.03%
44,647
-47
-0.1% -$9.26K
MSP
338
DELISTED
Datto Holding Corp.
MSP
$10.4M 0.03%
395,200
+21,393
+6% +$520K
UL icon
339
Unilever
UL
$136B
$10.3M 0.03%
170,431
-25,984
-13% -$1.54M
MRCY icon
340
Mercury Systems
MRCY
$6.52B
$10.3M 0.03%
186,896
-352,796
-65% -$17.9M
AZEK
341
DELISTED
The AZEK Co
AZEK
$10.3M 0.03%
222,366
-9,690
-4% -$386K
IJH icon
342
iShares Core S&P Mid-Cap ETF
IJH
$127B
$10.2M 0.03%
180,300
+25,785
+17% +$1.44M
ARCC icon
343
Ares Capital
ARCC
$14.4B
$10.1M 0.03%
477,704
-1,687
-0.4% -$35K
AVLR
344
DELISTED
Avalara, Inc.
AVLR
$9.83M 0.03%
76,110
+3,444
+5% +$538K
IWO icon
345
iShares Russell 2000 Growth ETF
IWO
$15.1B
$9.69M 0.03%
33,060
+191
+0.6% +$57.6K
KMI icon
346
Kinder Morgan
KMI
$68.7B
$9.66M 0.03%
608,932
+40,451
+7% +$673K
RF icon
347
Regions Financial
RF
$26.8B
$9.55M 0.03%
438,290
+82,161
+23% +$1.88M
KLAC icon
348
KLA
KLAC
$259B
$9.53M 0.03%
221,530
+44,620
+25% +$1.72M
ENS icon
349
EnerSys
ENS
$6.99B
$9.46M 0.03%
119,716
-318
-0.3% -$24.8K
IVW icon
350
iShares S&P 500 Growth ETF
IVW
$77.6B
$9.42M 0.03%
112,583
-1,999
-2% -$161K
12 13
14
15 16

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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.