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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
TECH icon
26
Bio-Techne
TECH
$11.2B
$307M 0.96%
2,723,916
-581,832
-18% -$61.2M
HQY icon
27
HealthEquity
HQY
$8.89B
$300M 0.94%
3,727,613
-65,028
-2% -$4.95M
ACHC icon
28
Acadia Healthcare
ACHC
$2.93B
$297M 0.93%
4,726,796
-76,966
-2% -$4.83M
CCJ icon
29
Cameco
CCJ
$43.1B
$296M 0.93%
15,414,574
-214,349
-1% -$4.05M
NBIS
30
Nebius Group N.V.
NBIS
$48.2B
$293M 0.92%
4,135,772
+215,121
+5% +$14.1M
ABMD
31
DELISTED
Abiomed Inc
ABMD
$291M 0.91%
932,573
-4,583
-0.5% -$1.41M
DEN
32
DELISTED
Denbury Inc.
DEN
$286M 0.9%
3,719,598
+2,505,341
+206% +$153M
MA icon
33
Mastercard
MA
$496B
$281M 0.88%
771,019
+15,951
+2% +$5.93M
LULU icon
34
lululemon athletica
LULU
$14.2B
$272M 0.85%
746,332
-31,761
-4% -$10.5M
LYV icon
35
Live Nation Entertainment
LYV
$42.8B
$270M 0.85%
3,079,663
-54,305
-2% -$4.66M
FOXF icon
36
Fox Factory Holding Corp
FOXF
$902M
$253M 0.79%
+1,625,709
New +$242M
PYPL icon
37
PayPal
PYPL
$50.6B
$245M 0.77%
839,537
-36,791
-4% -$9.72M
RYAAY icon
38
Ryanair
RYAAY
$30.8B
$244M 0.77%
5,634,383
+704,435
+14% +$31.8M
BURL icon
39
Burlington
BURL
$23B
$238M 0.75%
739,099
+3,064
+0.4% +$975K
GWRE icon
40
Guidewire Software
GWRE
$14.7B
$234M 0.73%
2,073,722
+794,329
+62% +$82.6M
RBA icon
41
RB Global
RBA
$16.9B
$233M 0.73%
3,923,307
-80,901
-2% -$4.98M
MRCY icon
42
Mercury Systems
MRCY
$6.45B
$224M 0.7%
3,385,827
+117,183
+4% +$8.1M
WH icon
43
Wyndham Hotels & Resorts
WH
$5.41B
$223M 0.7%
+3,090,470
New +$228M
MMSI icon
44
Merit Medical Systems
MMSI
$5.41B
$222M 0.7%
3,437,318
-39,611
-1% -$2.45M
ALRM icon
45
Alarm.com
ALRM
$2.8B
$222M 0.7%
2,619,619
-28,674
-1% -$2.45M
HALO icon
46
Halozyme
HALO
$11.8B
$222M 0.7%
4,882,486
-454,976
-9% -$20.1M
TXG icon
47
10x Genomics
TXG
$7.66B
$221M 0.69%
1,126,207
-23,539
-2% -$4.26M
GDDY icon
48
GoDaddy
GDDY
$11.6B
$218M 0.68%
2,505,218
-36,613
-1% -$3.06M
ZD icon
49
Ziff Davis
ZD
$1.99B
$214M 0.67%
1,790,961
-529,021
-23% -$58.1M
PODD icon
50
Insulet
PODD
$10B
$214M 0.67%
778,886
-16,358
-2% -$4.45M
1
2
3 4 5

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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.