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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
+13.65%
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
$25.7B
AUM Growth
+$1.1B
Cap. Flow
-$1.58B
Cap. Flow %
-6.14%
Top 10 Hldgs %
18.53%
Holding
367
New
26
Increased
146
Reduced
166
Closed
24

Top Buys

Rank Stock Value
1
AXON
Axon Enterprise
AXON
+$151M
2
RAMP icon
LiveRamp
RAMP
+$124M
3
GWRE icon
Guidewire Software
GWRE
+$115M
4
SE icon
Sea Limited
SE
+$102M
5
BLDR icon
Builders FirstSource
BLDR
+$89.9M

Top Sells

Rank Stock Value
1
NTES icon
NetEase
NTES
+$506M
2
CPRT icon
Copart
CPRT
+$136M
3
TSM icon
TSMC
TSM
+$125M
4
WEX icon
WEX
WEX
+$124M
5
BN icon
Brookfield
BN
+$123M

Sector Composition

Rank Sector Weight
1 Technology 26.05%
2 Healthcare 18.61%
3 Consumer Discretionary 13.78%
4 Industrials 13.27%
5 Financials 7.61%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
PEN icon
26
Penumbra
PEN
$12.8B
$239M 0.93%
1,227,385
-44,428
-3% -$9.35M
MA icon
27
Mastercard
MA
$493B
$236M 0.92%
698,378
-70,257
-9% -$22.8M
BFAM icon
28
Bright Horizons
BFAM
$3.76B
$235M 0.92%
1,545,774
+29,589
+2% +$3.72M
ZNGA
29
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
$231M 0.9%
25,283,624
-488,930
-2% -$4.55M
EXAS
30
DELISTED
Exact Sciences
EXAS
$223M 0.87%
2,186,997
+407,772
+23% +$35.2M
PODD icon
31
Insulet
PODD
$9.78B
$222M 0.86%
936,839
+35,403
+4% +$7.46M
STE icon
32
Steris
STE
$23B
$218M 0.85%
1,239,384
+18,050
+1% +$2.89M
MRCY icon
33
Mercury Systems
MRCY
$6.71B
$214M 0.83%
2,761,855
+656,735
+31% +$49.8M
CABO icon
34
Cable One
CABO
$191M
$212M 0.83%
112,408
-1,576
-1% -$2.86M
AAP icon
35
Advance Auto Parts
AAP
$3.18B
$211M 0.82%
1,375,339
-34,176
-2% -$5.15M
PYPL icon
36
PayPal
PYPL
$50.3B
$209M 0.81%
1,060,772
-88,726
-8% -$16.7M
GNRC icon
37
Generac Holdings
GNRC
$13.1B
$206M 0.8%
1,064,436
+120,669
+13% +$19.9M
AZPN
38
DELISTED
ASPEN TECHNOLOGY INC
AZPN
$199M 0.78%
1,575,368
-25,390
-2% -$3.21M
BCO icon
39
Brink's
BCO
$4.7B
$199M 0.77%
4,838,605
+906,432
+23% +$40M
GLOB icon
40
Globant
GLOB
$1.66B
$196M 0.76%
1,094,570
-174,712
-14% -$30.1M
BAH icon
41
Booz Allen Hamilton
BAH
$9.47B
$192M 0.75%
2,319,187
-32,011
-1% -$2.62M
GDDY icon
42
GoDaddy
GDDY
$11.5B
$192M 0.75%
2,524,600
-24,579
-1% -$1.85M
TDY icon
43
Teledyne Technologies
TDY
$31.7B
$188M 0.73%
606,404
-8,935
-1% -$2.82M
HQY icon
44
HealthEquity
HQY
$8.68B
$188M 0.73%
3,650,089
+1,108,938
+44% +$60.9M
EEFT icon
45
Euronet Worldwide
EEFT
$2.64B
$185M 0.72%
2,034,209
-320,219
-14% -$31.2M
VCYT icon
46
Veracyte
VCYT
$3.75B
$185M 0.72%
5,681,089
+1,383,013
+32% +$44M
LGND icon
47
Ligand Pharmaceuticals
LGND
$5.79B
$181M 0.7%
3,038,285
+655,419
+28% +$44.7M
ADBE icon
48
Adobe
ADBE
$105B
$180M 0.7%
366,687
-40,351
-10% -$18.8M
TFX icon
49
Teleflex
TFX
$5.87B
$180M 0.7%
528,079
-32,423
-6% -$12M
AMED
50
DELISTED
Amedisys
AMED
$180M 0.7%
760,065
-226,937
-23% -$51.6M
1
2
3 4 5

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William Blair Investment Management's Q3 2020 Portfolio in Review

As of Q3 2020, William Blair Investment Management held 367 positions worth $25.7B, up 4.5% from $24.6B the previous quarter. Its ten largest holdings account for 19% of the portfolio.

William Blair Investment Management withdrew a net $1.58B in Q3 2020, closing 24 positions and reducing 166 holdings. Its most notable exit was Planet Fitness, an estimated $114M position sold in full.

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

Against the trend, William Blair Investment Management opened a new position in Axon Enterprise worth $157M.

  • William Blair Investment Management's largest Q3 2020 buy was Axon Enterprise: 1,734,820 shares worth $157M.
  • William Blair Investment Management added most to LiveRamp in Q3 2020, an estimated $124M increase.
  • William Blair Investment Management's biggest Q3 2020 reduction was NetEase, cutting an estimated $506M.
  • William Blair Investment Management fully exited Planet Fitness in Q3 2020, selling an estimated $114M.
  • William Blair Investment Management's ten largest holdings make up 19% of its $25.7B portfolio in Q3 2020.
  • William Blair Investment Management opened 26 new positions and closed 24 in Q3 2020.
  • William Blair Investment Management's portfolio value rose 4.5% quarter-over-quarter to $25.7B.

Based on William Blair Investment Management's 13F filing for Q3 2020, filed 6 Nov 2020.