We are live on ! Find out more
William Blair Investment Management

William Blair Investment Management Portfolio holdings

AUM $33.3B
1-Year Est. Return 44.76%
This Fund
S&P 500
This Quarter Est. Return
+5.82%
1 Year Est. Return
+44.76%
3 Year Est. Return
+140.8%
5 Year Est. Return
+166.51%
10 Year Est. Return
+978.6%
AUM
$30.9B
AUM Growth
+$843M
Cap. Flow
-$358M
Cap. Flow %
-1.16%
Top 10 Hldgs %
16.89%
Holding
389
New
33
Increased
152
Reduced
179
Closed
22

Top Buys

Rank Stock Value
1
CRL icon
Charles River Laboratories
CRL
+$239M
2
RYAAY icon
Ryanair
RYAAY
+$210M
3
DT icon
Dynatrace
DT
+$201M
4
CERT icon
Certara
CERT
+$155M
5
LESL icon
Leslie's
LESL
+$148M

Top Sells

Rank Stock Value
1
SEDG icon
SolarEdge
SEDG
+$265M
2
TSM icon
TSMC
TSM
+$235M
3
STE icon
Steris
STE
+$187M
4
MDB icon
MongoDB
MDB
+$173M
5
ETSY icon
Etsy
ETSY
+$170M

Sector Composition

Rank Sector Weight
1 Technology 24.51%
2 Healthcare 21.08%
3 Industrials 14.45%
4 Consumer Discretionary 12.96%
5 Financials 7.5%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
VIAV icon
301
Viavi Solutions
VIAV
$10.7B
$8.71M 0.03%
554,816
-324,439
-37% -$5.24M
CADE
302
DELISTED
Cadence Bancorporation
CADE
$8.68M 0.03%
418,850
-244,582
-37% -$4.98M
IWO icon
303
iShares Russell 2000 Growth ETF
IWO
$15B
$8.6M 0.03%
28,580
+22,323
+357% +$6.93M
RNST icon
304
Renasant Corp
RNST
$3.99B
$8.48M 0.03%
205,041
-120,217
-37% -$4.78M
CNX icon
305
CNX Resources
CNX
$5.25B
$8.43M 0.03%
573,325
-244,726
-30% -$3.29M
BKH icon
306
Black Hills Corp
BKH
$5.63B
$8.4M 0.03%
125,786
-73,552
-37% -$4.57M
NBHC icon
307
National Bank Holdings
NBHC
$1.93B
$8.36M 0.03%
210,582
-123,405
-37% -$4.62M
MMS icon
308
Maximus
MMS
$2.87B
$8.31M 0.03%
93,375
-1,118,207
-92% -$91.4M
SAIA icon
309
Saia
SAIA
$10B
$8.23M 0.03%
35,702
-20,848
-37% -$4.25M
HIW icon
310
Highwoods Properties
HIW
$3.5B
$8.1M 0.03%
188,587
-110,028
-37% -$4.49M
ADC icon
311
Agree Realty
ADC
$9.31B
$8.07M 0.03%
119,962
-70,053
-37% -$4.57M
LSI
312
DELISTED
Life Storage, Inc.
LSI
$8.04M 0.03%
93,524
-54,610
-37% -$4.54M
SSD icon
313
Simpson Manufacturing
SSD
$7.98B
$7.8M 0.03%
75,232
-43,882
-37% -$4.4M
ZWS icon
314
Zurn Elkay Water Solutions
ZWS
$8.41B
$7.75M 0.03%
341,896
-199,409
-37% -$4.28M
CRS icon
315
Carpenter Technology
CRS
$26.3B
$7.74M 0.03%
188,184
-110,017
-37% -$4.18M
JJSF icon
316
J&J Snack Foods
JJSF
$1.69B
$7.73M 0.03%
49,209
-22,422
-31% -$3.52M
HMN icon
317
Horace Mann Educators
HMN
$2.09B
$7.7M 0.02%
178,259
-104,242
-37% -$4.31M
CASY icon
318
Casey's General Stores
CASY
$31.4B
$7.69M 0.02%
35,576
-10,601
-23% -$2.12M
CRI icon
319
Carter's
CRI
$1.43B
$7.63M 0.02%
85,800
-50,002
-37% -$4.62M
AKR icon
320
Acadia Realty Trust
AKR
$2.86B
$7.61M 0.02%
+401,080
New +$6.99M
SXT icon
321
Sensient Technologies
SXT
$5.57B
$7.6M 0.02%
97,489
-56,967
-37% -$4.38M
AAT
322
American Assets Trust
AAT
$1.4B
$7.49M 0.02%
230,806
-134,699
-37% -$4.16M
TRNO icon
323
Terreno Realty
TRNO
$7.53B
$7.39M 0.02%
128,006
-74,581
-37% -$4.29M
BANR icon
324
Banner Corp
BANR
$2.5B
$7.36M 0.02%
137,961
-80,884
-37% -$4.21M
OCFC icon
325
OceanFirst Financial
OCFC
$1.87B
$7.26M 0.02%
303,432
-177,851
-37% -$3.83M
11 12
13
14 15

Similar funds

BAMCO Inc
BAMCO Inc New York $33.1B AUM 11.16% 1-Year Est. Return
GAM
Gotham Asset Management New York $32.7B AUM 27.65% 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
Hotchkis & Wiley Capital Management
Hotchkis & Wiley Capital Management Los Angeles, California $32.4B AUM 17.21% 1-Year Est. Return
Public Sector Pension Investment Board (PSP Investments)
Public Sector Pension Investment Board (PSP Investments) Montreal, Quebec, Canada $32.1B AUM 31.84% 1-Year Est. Return
VIA
Vanguard Investments Australia Victoria, Australia $34.6B AUM
Chevy Chase Trust
Chevy Chase Trust Bethesda, Maryland $34.7B AUM 29.45% 1-Year Est. Return
Treasurer of the State of North Carolina
Treasurer of the State of North Carolina Raleigh, North Carolina $31.8B AUM 28.93% 1-Year Est. Return

William Blair Investment Management's Q1 2021 Portfolio in Review

As of Q1 2021, William Blair Investment Management held 389 positions worth $30.9B, up 2.8% from $30B the previous quarter. Its ten largest holdings account for 17% of the portfolio.

William Blair Investment Management's Q1 2021 filing shows 33 new, 152 increased, 179 reduced and 22 closed positions. Its largest new stake was Dynatrace: 4,138,525 shares worth $200M. The largest sale was SolarEdge, an estimated $265M.

By sector, the portfolio is most concentrated in Technology at 25% of assets, down from 27% a quarter earlier, followed by Healthcare and Industrials.

  • William Blair Investment Management's largest Q1 2021 buy was Dynatrace: 4,138,525 shares worth $200M.
  • William Blair Investment Management added most to Charles River Laboratories in Q1 2021, an estimated $239M increase.
  • William Blair Investment Management's biggest Q1 2021 reduction was TSMC, cutting an estimated $235M.
  • William Blair Investment Management fully exited SolarEdge in Q1 2021, selling an estimated $265M.
  • William Blair Investment Management's ten largest holdings make up 17% of its $30.9B portfolio in Q1 2021.
  • William Blair Investment Management opened 33 new positions and closed 22 in Q1 2021.
  • William Blair Investment Management's portfolio value rose 2.8% quarter-over-quarter to $30.9B.

Based on William Blair Investment Management's 13F filing for Q1 2021, filed 13 May 2021.