We are live on ! Find out more
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
ENB icon
451
Enbridge
ENB
$112B
$5.66M 0.02%
144,761
+42,260
+41% +$1.69M
SPG icon
452
Simon Property Group
SPG
$72.3B
$5.63M 0.02%
35,248
+944
+3% +$144K
DSGX icon
453
Descartes Systems
DSGX
$6.82B
$5.63M 0.02%
68,109
+11,058
+19% +$906K
BP icon
454
BP
BP
$107B
$5.63M 0.02%
211,304
-23,376
-10% -$648K
PPG icon
455
PPG Industries
PPG
$26.6B
$5.62M 0.02%
32,589
+1,408
+5% +$226K
MRCC
456
DELISTED
Monroe Capital Corp
MRCC
$5.6M 0.02%
499,045
+3,896
+0.8% +$42.3K
STKL
457
DELISTED
SunOpta
STKL
$5.6M 0.02%
805,584
+248,982
+45% +$1.8M
HEFA icon
458
iShares Currency Hedged MSCI EAFE ETF
HEFA
$7.71B
$5.56M 0.02%
157,336
+21
+0% +$742
SMWB icon
459
Similarweb
SMWB
$658M
$5.52M 0.02%
+308,361
New +$5.66M
GOGO icon
460
Gogo Inc
GOGO
$492M
$5.47M 0.02%
404,649
+51,754
+15% +$769K
CF icon
461
CF Industries
CF
$17.3B
$5.39M 0.02%
76,196
+8,175
+12% +$512K
BJ icon
462
BJs Wholesale Club
BJ
$12.3B
$5.39M 0.02%
80,497
+2,311
+3% +$144K
BSV icon
463
Vanguard Short-Term Bond ETF
BSV
$44.6B
$5.38M 0.02%
66,539
-8,502
-11% -$691K
IWS icon
464
iShares Russell Mid-Cap Value ETF
IWS
$16B
$5.35M 0.02%
43,722
+4,594
+12% +$548K
SEE
465
DELISTED
Sealed Air
SEE
$5.32M 0.02%
78,885
+74,762
+1,813% +$4.65M
MXL icon
466
MaxLinear
MXL
$6.8B
$5.2M 0.02%
68,916
-2,510
-4% -$161K
RWO icon
467
State Street SPDR Dow Jones Global Real Estate ETF
RWO
$1.3B
$5.19M 0.02%
91,869
+2,011
+2% +$109K
DLR icon
468
Digital Realty Trust
DLR
$71.7B
$5.19M 0.02%
29,352
+651
+2% +$104K
VRTX icon
469
Vertex Pharmaceuticals
VRTX
$126B
$5.16M 0.02%
23,489
+7,239
+45% +$1.41M
VBK icon
470
Vanguard Morningstar Small-Cap Growth ETF
VBK
$24.5B
$5.16M 0.02%
18,295
-2,238
-11% -$642K
VONG icon
471
Vanguard Russell 1000 Growth ETF
VONG
$45B
$5.11M 0.02%
65,117
+10,963
+20% +$836K
SSU
472
DELISTED
SIGNA Sports United N.V.
SSU
$5.08M 0.02%
+599,301
New +$5.11M
IHI icon
473
iShares US Medical Devices ETF
IHI
$3.38B
$5.04M 0.02%
76,596
+1,111
+1% +$71.1K
HHS icon
474
Harte-Hanks
HHS
$5.03M 0.02%
+661,119
New +$5.25M
HAL icon
475
Halliburton
HAL
$26.6B
$5.02M 0.02%
219,457
+10,090
+5% +$239K
17 18
19
20 21

Similar funds

SAM
Storebrand Asset Management Lysaker, Norway $34.8B AUM 25.49% 1-Year Est. Return
Chevy Chase Trust
Chevy Chase Trust Bethesda, Maryland $34.7B AUM 29.45% 1-Year Est. Return
VIA
Vanguard Investments Australia Victoria, Australia $34.6B AUM
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return
Pacer Advisors
Pacer Advisors Malvern, Pennsylvania $35.6B AUM 18.19% 1-Year Est. Return
Kayne Anderson Rudnick Investment Management
Kayne Anderson Rudnick Investment Management Los Angeles, California $34B AUM 6.31% 1-Year Est. Return
Viking Global Investors
Viking Global Investors Stamford, Connecticut $35.7B AUM 21.3% 1-Year Est. Return
First Manhattan
First Manhattan New York $36.1B AUM 11.5% 1-Year Est. Return

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.