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
TBT icon
501
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$312M
$4.4M 0.01%
260,754
+1,000
+0.4% +$17.3K
CLVT icon
502
Clarivate
CLVT
$1.16B
$4.4M 0.01%
186,521
+52,466
+39% +$1.22M
STIP icon
503
iShares 0-5 Year TIPS Bond ETF
STIP
$15.8B
$4.38M 0.01%
41,398
+35
+0.1% +$3.71K
CTVA icon
504
Corteva
CTVA
$51.3B
$4.34M 0.01%
91,836
+1,518
+2% +$69.1K
BURL icon
505
Burlington
BURL
$23.2B
$4.33M 0.01%
14,837
+2,280
+18% +$641K
XLU icon
506
State Street Utilities Select Sector SPDR ETF
XLU
$22.5B
$4.3M 0.01%
120,272
-3,162
-3% -$107K
FSLR icon
507
First Solar
FSLR
$26.9B
$4.29M 0.01%
49,238
+319
+0.7% +$32.8K
ETSY icon
508
Etsy
ETSY
$7.85B
$4.28M 0.01%
19,554
+1,131
+6% +$272K
RSG icon
509
Republic Services
RSG
$65.7B
$4.28M 0.01%
30,667
+2,079
+7% +$276K
BIIB icon
510
Biogen
BIIB
$30.7B
$4.26M 0.01%
17,762
+4,077
+30% +$1.05M
A icon
511
Agilent Technologies
A
$41.2B
$4.25M 0.01%
26,649
+9,357
+54% +$1.46M
COP icon
512
ConocoPhillips
COP
$141B
$4.25M 0.01%
58,922
-5,372
-8% -$391K
VOT icon
513
Vanguard Morningstar Mid-Cap Growth ETF
VOT
$19.9B
$4.24M 0.01%
16,654
+413
+3% +$104K
FSV icon
514
FirstService
FSV
$6.32B
$4.23M 0.01%
21,524
+17
+0.1% +$3.28K
MUB icon
515
iShares National Muni Bond ETF
MUB
$45.5B
$4.21M 0.01%
36,225
-5,297
-13% -$615K
GSBD icon
516
Goldman Sachs BDC
GSBD
$1.1B
$4.2M 0.01%
219,202
+13,093
+6% +$248K
SIMS icon
517
State Street SPDR S&P Kensho Intelligent Structures ETF
SIMS
$8.78M
$4.2M 0.01%
92,310
-26,087
-22% -$1.21M
HCSG icon
518
Healthcare Services Group
HCSG
$1.53B
$4.19M 0.01%
235,540
-29,307
-11% -$570K
ETR icon
519
Entergy
ETR
$50B
$4.19M 0.01%
74,346
+14,430
+24% +$758K
INGN icon
520
Inogen
INGN
$164M
$4.18M 0.01%
122,846
+2,440
+2% +$88.6K
LESL icon
521
Leslie's
LESL
$11M
$4.16M 0.01%
8,801
+892
+11% +$385K
TRU icon
522
TransUnion
TRU
$15.3B
$4.13M 0.01%
34,840
+3,920
+13% +$449K
WCN
523
Waste Connections
WCN
$42B
$4.09M 0.01%
30,051
+7,185
+31% +$955K
CTLT
524
DELISTED
CATALENT, INC.
CTLT
$4.09M 0.01%
31,960
+2,079
+7% +$267K
CSX icon
525
CSX Corp
CSX
$93.1B
$4.08M 0.01%
108,505
+46,653
+75% +$1.65M
19 20
21
22 23

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.