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William Blair Investment Management

William Blair Investment Management Portfolio holdings

AUM $30.3B
1-Year Est. Return 33.75%
This Fund
S&P 500
This Quarter Est. Return
+7.98%
1 Year Est. Return
+33.75%
3 Year Est. Return
+108.55%
5 Year Est. Return
+126.9%
10 Year Est. Return
+788.31%
AUM
$31.9B
AUM Growth
+$988M
Cap. Flow
-$703M
Cap. Flow %
-2.21%
Top 10 Hldgs %
16.59%
Holding
479
New
112
Increased
100
Reduced
249
Closed
14

Top Buys

Rank Stock Value
1
FOXF icon
Fox Factory Holding Corp
FOXF
+$242M
2
WH icon
Wyndham Hotels & Resorts
WH
+$228M
3
DEN
Denbury Inc.
DEN
+$153M
4
BLDR icon
Builders FirstSource
BLDR
+$134M
5
RVLV icon
Revolve Group
RVLV
+$99.3M

Top Sells

Rank Stock Value
1
LOPE icon
Grand Canyon Education
LOPE
+$206M
2
ETSY icon
Etsy
ETSY
+$195M
3
AAP icon
Advance Auto Parts
AAP
+$192M
4
BJ icon
BJs Wholesale Club
BJ
+$151M
5
RAMP icon
LiveRamp
RAMP
+$125M

Sector Composition

Rank Sector Weight
1 Technology 25.66%
2 Healthcare 20.52%
3 Industrials 14.68%
4 Consumer Discretionary 14.22%
5 Financials 6.61%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
GDYN icon
151
Grid Dynamics Holdings
GDYN
$630M
$47.8M 0.15%
3,180,286
-115,523
-4% -$1.81M
EW icon
152
Edwards Lifesciences
EW
$54B
$47.7M 0.15%
460,260
-3,896
-0.8% -$367K
DLO icon
153
dLocal
DLO
$4.15B
$46.8M 0.15%
+890,962
New +$34.3M
KRNT icon
154
Kornit Digital
KRNT
$815M
$44.9M 0.14%
360,737
+3,586
+1% +$379K
GPRE icon
155
Green Plains
GPRE
$1.09B
$44.6M 0.14%
+1,327,205
New +$39.6M
HCAT icon
156
Health Catalyst
HCAT
$132M
$43.6M 0.14%
785,304
-31,714
-4% -$1.69M
ROP icon
157
Roper Technologies
ROP
$39.5B
$43.2M 0.14%
91,892
-16,049
-15% -$7.09M
ACH
158
Accendra Health
ACH
$96.5M
$42.7M 0.13%
1,008,178
+192,355
+24% +$7.48M
STE icon
159
Steris
STE
$23.2B
$42.2M 0.13%
204,554
+5,760
+3% +$1.16M
ONT
160
Onterris Inc
ONT
$576M
$40.1M 0.13%
748,146
-28,919
-4% -$1.52M
LIN icon
161
Linde
LIN
$226B
$40M 0.13%
138,360
+6,459
+5% +$1.88M
A icon
162
Agilent Technologies
A
$42.2B
$38.1M 0.12%
257,533
-93,705
-27% -$12.8M
ECPG icon
163
Encore Capital Group
ECPG
$1.98B
$37.4M 0.12%
789,636
-236,785
-23% -$10.3M
STNE icon
164
StoneCo
STNE
$2.42B
$36.9M 0.12%
550,803
-106,406
-16% -$6.9M
OZON
165
DELISTED
Ozon Holdings PLC American Depositary Shares, each ADS representing one ordinary share
OZON
$36.8M 0.12%
+627,949
New +$36.5M
CCMP
166
DELISTED
CMC Materials, Inc. Common Stock
CCMP
$36.3M 0.11%
240,589
+36,633
+18% +$6.07M
AERI
167
DELISTED
Aerie Pharmaceuticals
AERI
$35M 0.11%
2,186,500
+548,628
+33% +$9.41M
ECL icon
168
Ecolab
ECL
$79.8B
$34.2M 0.11%
166,020
-5,681
-3% -$1.23M
PLD icon
169
Prologis
PLD
$133B
$34.1M 0.11%
285,196
-2,901
-1% -$339K
PLOW icon
170
Douglas Dynamics
PLOW
$979M
$33.8M 0.11%
831,777
-9,741
-1% -$428K
CDNS icon
171
Cadence Design Systems
CDNS
$90.2B
$33.5M 0.11%
245,034
+8,477
+4% +$1.12M
OC icon
172
Owens Corning
OC
$12.6B
$32.8M 0.1%
334,796
+90,494
+37% +$9.04M
QNST icon
173
QuinStreet
QNST
$1.2B
$32.2M 0.1%
1,735,155
-293,408
-14% -$5.56M
NEE icon
174
NextEra Energy
NEE
$179B
$31.4M 0.1%
428,990
-1,629
-0.4% -$122K
AIN icon
175
Albany International
AIN
$1.79B
$31M 0.1%
346,786
-13,055
-4% -$1.14M
5 6
7
8 9

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William Blair Investment Management's Q2 2021 Portfolio in Review

As of Q2 2021, William Blair Investment Management held 479 positions worth $31.9B, up 3.2% from $30.9B the previous quarter. Its ten largest holdings account for 17% of the portfolio.

William Blair Investment Management's Q2 2021 filing shows 112 new, 100 increased, 249 reduced and 14 closed positions. Its largest new stake was Fox Factory Holding Corp: 1,625,709 shares worth $253M. The largest sale was Grand Canyon Education, an estimated $206M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, up from 25% a quarter earlier, followed by Healthcare and Industrials.

  • William Blair Investment Management's largest Q2 2021 buy was Fox Factory Holding Corp: 1,625,709 shares worth $253M.
  • William Blair Investment Management added most to Denbury Inc. in Q2 2021, an estimated $153M increase.
  • William Blair Investment Management's biggest Q2 2021 reduction was Grand Canyon Education, cutting an estimated $206M.
  • William Blair Investment Management fully exited Proofpoint, Inc. in Q2 2021, selling an estimated $118M.
  • William Blair Investment Management's ten largest holdings make up 17% of its $31.9B portfolio in Q2 2021.
  • William Blair Investment Management opened 112 new positions and closed 14 in Q2 2021.
  • William Blair Investment Management's portfolio value rose 3.2% quarter-over-quarter to $31.9B.

Based on William Blair Investment Management's 13F filing for Q2 2021, filed 12 Aug 2021.