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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
+771.69%
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 25.7%
2 Healthcare 20.52%
3 Industrials 14.68%
4 Consumer Discretionary 14.22%
5 Financials 6.56%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
TSM icon
1
TSMC
TSM
$2.16T
$1.3B 4.09%
10,834,733
+495,832
+5% +$58.1M
SPY icon
2
State Street SPDR S&P 500 ETF Trust
SPY
$821B
$556M 1.75%
1,299,860
-126,590
-9% -$52.8M
MSFT icon
3
Microsoft
MSFT
$3.66T
$532M 1.67%
1,962,805
+36,267
+2% +$9.22M
AMZN icon
4
Amazon
AMZN
$2.99T
$439M 1.38%
2,551,040
+34,400
+1% +$5.72M
BWXT icon
5
BWX Technologies
BWXT
$15.8B
$427M 1.34%
7,355,391
-106,065
-1% -$6.82M
MELI icon
6
Mercado Libre
MELI
$95.7B
$420M 1.32%
269,527
-5,502
-2% -$8.08M
HZNP
7
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
$411M 1.29%
4,393,687
+244,492
+6% +$22.5M
SE icon
8
Sea Limited
SE
$68.3B
$406M 1.28%
1,480,104
+33,196
+2% +$8.43M
BCO icon
9
Brink's
BCO
$4.86B
$404M 1.27%
5,253,237
-79,302
-1% -$6.16M
GOOGL icon
10
Alphabet (Google) Class A
GOOGL
$4.62T
$388M 1.22%
3,176,820
-82,320
-3% -$9.61M
CNI icon
11
Canadian National Railway
CNI
$77B
$383M 1.2%
3,628,682
-187,537
-5% -$20.7M
AZTA icon
12
Azenta
AZTA
$1.39B
$363M 1.14%
3,812,057
-76,702
-2% -$7.44M
CRL icon
13
Charles River Laboratories
CRL
$11.3B
$362M 1.14%
978,478
-13,702
-1% -$4.58M
BLDR icon
14
Builders FirstSource
BLDR
$8.11B
$359M 1.13%
8,423,997
+2,879,803
+52% +$134M
CCK icon
15
Crown Holdings
CCK
$13.2B
$348M 1.09%
3,402,062
-41,348
-1% -$4.36M
EEFT icon
16
Euronet Worldwide
EEFT
$2.93B
$344M 1.08%
2,541,016
+441,810
+21% +$64.4M
AXON
17
Axon Enterprise
AXON
$48.9B
$341M 1.07%
1,926,401
+129,038
+7% +$19M
MLM icon
18
Martin Marietta Materials
MLM
$33.4B
$341M 1.07%
968,012
-14,320
-1% -$5.1M
GNRC icon
19
Generac Holdings
GNRC
$12.9B
$338M 1.06%
813,574
-11,497
-1% -$3.86M
DT icon
20
Dynatrace
DT
$13.3B
$334M 1.05%
5,712,232
+1,573,707
+38% +$82.2M
NICE icon
21
Nice
NICE
$6.05B
$329M 1.03%
1,328,509
+113,650
+9% +$26.2M
TREX icon
22
Trex
TREX
$4.89B
$320M 1.01%
3,134,136
-43,608
-1% -$4.4M
BFAM icon
23
Bright Horizons
BFAM
$3.98B
$314M 0.98%
2,131,955
+580,991
+37% +$86.9M
EHC icon
24
Encompass Health
EHC
$11B
$309M 0.97%
4,974,412
-807,661
-14% -$53.8M
P
25
Everpure Inc
P
$27.9B
$307M 0.96%
15,706,793
+245,386
+2% +$4.83M
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.