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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
XLC icon
351
State Street Communication Services Select Sector SPDR ETF
XLC
$22.4B
$9.38M 0.03%
120,785
+8,909
+8% +$704K
VCIT icon
352
Vanguard Intermediate-Term Corporate Bond ETF
VCIT
$66.3B
$9.3M 0.03%
100,310
+147
+0.1% +$13.8K
BAX icon
353
Baxter International
BAX
$14.2B
$9.3M 0.03%
108,295
-85,832
-44% -$6.91M
VYM icon
354
Vanguard High Dividend Yield ETF
VYM
$82.8B
$9.28M 0.03%
82,800
-6,269
-7% -$682K
FDN icon
355
First Trust Dow Jones Internet Index Fund ETF
FDN
$5.45B
$9.27M 0.03%
41,001
+5,861
+17% +$1.39M
MSI icon
356
Motorola Solutions
MSI
$77.4B
$9.23M 0.03%
33,991
-2,049
-6% -$516K
GIS icon
357
General Mills
GIS
$19.7B
$9.16M 0.03%
135,926
+19,860
+17% +$1.26M
SDY icon
358
State Street SPDR S&P Dividend ETF
SDY
$23.9B
$9.15M 0.03%
70,879
+3,803
+6% +$473K
WY icon
359
Weyerhaeuser
WY
$18.4B
$9.11M 0.03%
221,185
+31,775
+17% +$1.21M
MMP
360
DELISTED
Magellan Midstream Partners, L.P.
MMP
$9.09M 0.03%
195,685
-2,315
-1% -$109K
LMT icon
361
Lockheed Martin
LMT
$136B
$9M 0.03%
25,313
+109
+0.4% +$37.7K
LFUS icon
362
Littelfuse
LFUS
$11.6B
$8.99M 0.03%
28,563
+67
+0.2% +$20.3K
MO icon
363
Altria Group
MO
$114B
$8.96M 0.03%
189,180
+39,576
+26% +$1.81M
NVS icon
364
Novartis
NVS
$297B
$8.84M 0.03%
101,049
+10,304
+11% +$856K
WM icon
365
Waste Management
WM
$91B
$8.79M 0.03%
52,697
+1,455
+3% +$234K
XBI icon
366
State Street SPDR S&P Biotech ETF
XBI
$10.3B
$8.78M 0.03%
78,427
-12,762
-14% -$1.54M
GLW icon
367
Corning
GLW
$143B
$8.71M 0.03%
233,817
+14,008
+6% +$525K
PING
368
DELISTED
Ping Identity Holding Corp.
PING
$8.69M 0.03%
379,865
+73,284
+24% +$1.86M
RSI icon
369
Rush Street Interactive
RSI
$2.88B
$8.64M 0.03%
523,852
-6,750
-1% -$127K
SPTI icon
370
State Street SPDR Portfolio Intermediate Term Treasury ETF
SPTI
$10.6B
$8.64M 0.03%
269,637
+14,535
+6% +$467K
APPF icon
371
AppFolio
APPF
$7.04B
$8.63M 0.03%
71,290
+2,145
+3% +$272K
BR icon
372
Broadridge
BR
$19B
$8.6M 0.03%
47,046
+2,416
+5% +$425K
CB icon
373
Chubb
CB
$135B
$8.54M 0.03%
44,200
+6,324
+17% +$1.19M
ETN icon
374
Eaton
ETN
$174B
$8.52M 0.03%
49,291
+1,045
+2% +$173K
GDX icon
375
VanEck Gold Miners ETF
GDX
$27.4B
$8.45M 0.03%
263,835
-1,867
-0.7% -$59.6K
13 14
15
16 17

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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.