We are live on ! Find out more
William Blair & Company

William Blair & Company Portfolio holdings

AUM $38.4B
1-Year Est. Return 25.71%
This Fund
S&P 500
This Quarter Est. Return
+1.99%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+665.86%
AUM
$29.4B
AUM Growth
+$519M
Cap. Flow
+$281M
Cap. Flow %
0.96%
Top 10 Hldgs %
23.58%
Holding
1,987
New
99
Increased
752
Reduced
666
Closed
108

Top Buys

Rank Stock Value
1
ABNB icon
Airbnb
ABNB
+$45.2M
2
CHWY icon
Chewy
CHWY
+$31.5M
3
U icon
Unity
U
+$23.3M
4
RYAN icon
Ryan Specialty Holdings
RYAN
+$22.4M
5
AMZN icon
Amazon
AMZN
+$21.5M

Top Sells

Rank Stock Value
1
IDXX icon
Idexx Laboratories
IDXX
+$37.7M
2
GD icon
General Dynamics
GD
+$33.5M
3
ECL icon
Ecolab
ECL
+$31.7M
4
JNJ icon
Johnson & Johnson
JNJ
+$20.9M
5
UBER icon
Uber
UBER
+$19.2M

Sector Composition

Rank Sector Weight
1 Technology 26.19%
2 Healthcare 19.81%
3 Financials 11.61%
4 Consumer Discretionary 10.68%
5 Industrials 9.37%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
CMS icon
1376
CMS Energy
CMS
$22.1B
$259K ﹤0.01%
4,335
-2
-0% -$125
FMBI
1377
DELISTED
First Midwest Bancorp Inc/IL
FMBI
$259K ﹤0.01%
13,642
+99
+0.7% +$1.82K
DTM icon
1378
DT Midstream
DTM
$13.7B
$258K ﹤0.01%
+5,589
New +$245K
GVI icon
1379
iShares Intermediate Government/Credit Bond ETF
GVI
$3.8B
$258K ﹤0.01%
2,237
– –
DNLI icon
1380
Denali Therapeutics
DNLI
$4.04B
$257K ﹤0.01%
5,100
– –
GL icon
1381
Globe Life
GL
$14B
$257K ﹤0.01%
2,892
-16
-0.6% -$1.5K
PRFZ icon
1382
Invesco FTSE RAFI US 1500 Small-Mid ETF
PRFZ
$2.91B
$256K ﹤0.01%
7,025
– –
CPRI icon
1383
Capri Holdings
CPRI
$1.79B
$254K ﹤0.01%
5,255
+143
+3% +$7.79K
FE icon
1384
FirstEnergy
FE
$27.3B
$254K ﹤0.01%
7,144
– –
FHN icon
1385
First Horizon
FHN
$12.3B
$254K ﹤0.01%
15,569
+815
+6% +$13K
NARI
1386
DELISTED
Inari Medical, Inc. Common Stock
NARI
$254K ﹤0.01%
3,130
– –
AN icon
1387
AutoNation
AN
$6.88B
$253K ﹤0.01%
+2,076
New +$234K
AYI icon
1388
Acuity Brands
AYI
$10.7B
$253K ﹤0.01%
1,462
+11
+0.8% +$1.93K
RSPH icon
1389
Invesco S&P 500 Equal Weight Health Care ETF
RSPH
$797M
$253K ﹤0.01%
8,500
– –
SUSB icon
1390
iShares ESG Aware 1-5 Year USD Corporate Bond ETF
SUSB
$1.3B
$253K ﹤0.01%
9,751
-16,625
-63% -$433K
OFG icon
1391
OFG Bancorp
OFG
$2.27B
$252K ﹤0.01%
10,000
– –
SWCH
1392
DELISTED
Switch, Inc. Class A Common Stock
SWCH
$252K ﹤0.01%
+9,925
New +$233K
ING icon
1393
ING
ING
$102B
$250K ﹤0.01%
17,235
+2,235
+15% +$29.9K
EWO icon
1394
iShares MSCI Austria ETF
EWO
$187M
$249K ﹤0.01%
10,000
– –
PVG
1395
DELISTED
PRETIUM RESOURCES INC.
PVG
$249K ﹤0.01%
25,825
-5,000
-16% -$47.7K
DVA icon
1396
DaVita
DVA
$11.6B
$247K ﹤0.01%
2,127
-593
-22% -$74.3K
EVTC icon
1397
Evertec
EVTC
$1.86B
$247K ﹤0.01%
5,404
-2,147
-28% -$96.8K
ENFR icon
1398
Alerian Energy Infrastructure ETF
ENFR
$521M
$246K ﹤0.01%
12,500
+2,450
+24% +$47.1K
ICF icon
1399
iShares Select U.S. REIT ETF
ICF
$2.11B
$245K ﹤0.01%
3,740
– –
IWC icon
1400
iShares Micro-Cap ETF
IWC
$1.51B
$245K ﹤0.01%
1,695
– –
54 55
56
57 58

Similar funds

Parallax Volatility Advisers
Parallax Volatility Advisers San Francisco, California $38.6B AUM 45.89% 1-Year Est. Return
Credit Agricole
Credit Agricole Montrouge Cedex, France $38.1B AUM
Carson Wealth (CWM LLC)
Carson Wealth (CWM LLC) Omaha, Nebraska $38.1B AUM 19.66% 1-Year Est. Return
Nomura Holdings
Nomura Holdings Tokyo, Japan $37.7B AUM 34.44% 1-Year Est. Return
Fayez Sarofim & Co
Fayez Sarofim & Co Houston, Texas $39.1B AUM 15.14% 1-Year Est. Return
HF
HRT Financial New York $40.1B AUM 58.22% 1-Year Est. Return
First Manhattan
First Manhattan New York $36.1B AUM 11.5% 1-Year Est. Return
Newport Trust Company
Newport Trust Company Washington, District of Columbia $40.7B AUM 24.62% 1-Year Est. Return

William Blair & Company's Q3 2021 Portfolio in Review

As of Q3 2021, William Blair & Company held 1,987 positions worth $29.4B, up 1.8% from $28.9B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q3 2021 filing shows 99 new, 752 increased, 666 reduced and 108 closed positions. Its largest new stake was Ryan Specialty Holdings: 709,555 shares worth $24M. The largest sale was Idexx Laboratories, an estimated $37.7M.

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 Q3 2021 buy was Ryan Specialty Holdings: 709,555 shares worth $24M.
  • William Blair & Company added most to Airbnb in Q3 2021, an estimated $45.2M increase.
  • William Blair & Company's biggest Q3 2021 reduction was Idexx Laboratories, cutting an estimated $37.7M.
  • William Blair & Company fully exited Slack Technologies, Inc. in Q3 2021, selling an estimated $13.8M.
  • William Blair & Company's ten largest holdings make up 24% of its $29.4B portfolio in Q3 2021.
  • William Blair & Company opened 99 new positions and closed 108 in Q3 2021.
  • William Blair & Company's portfolio value rose 1.8% quarter-over-quarter to $29.4B.

Based on William Blair & Company's 13F filing for Q3 2021, filed 12 Nov 2021.