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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
-14.67%
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
$20.5B
AUM Growth
-$4.55B
Cap. Flow
-$12.9M
Cap. Flow %
-0.06%
Top 10 Hldgs %
22.75%
Holding
396
New
40
Increased
177
Reduced
118
Closed
57

Top Buys

Rank Stock Value
1
TAL icon
TAL Education Group
TAL
+$224M
2
SEDG icon
SolarEdge
SEDG
+$152M
3
MRCY icon
Mercury Systems
MRCY
+$143M
4
MASI
Masimo
MASI
+$138M
5
BCO icon
Brink's
BCO
+$124M

Top Sells

Rank Stock Value
1
MTN icon
Vail Resorts
MTN
+$240M
2
TD icon
Toronto Dominion Bank
TD
+$237M
3
SABR icon
Sabre
SABR
+$207M
4
CHKP icon
Check Point Software Technologies
CHKP
+$173M
5
GWRE icon
Guidewire Software
GWRE
+$141M

Sector Composition

Rank Sector Weight
1 Technology 22.09%
2 Healthcare 16.18%
3 Consumer Discretionary 14.43%
4 Industrials 13.27%
5 Financials 9.12%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
PLNT icon
76
Planet Fitness
PLNT
$3.65B
$90.7M 0.44%
1,861,838
+360,974
+24% +$25.2M
COUP
77
DELISTED
Coupa Software Incorporated
COUP
$89.6M 0.44%
+641,445
New +$99.2M
ICE icon
78
Intercontinental Exchange
ICE
$85B
$89.3M 0.43%
1,105,275
-8,496
-0.8% -$770K
GNRC icon
79
Generac Holdings
GNRC
$13.1B
$86.7M 0.42%
930,166
+35,220
+4% +$3.63M
HEI.A icon
80
HEICO Corp Class A
HEI.A
$38B
$86.4M 0.42%
1,352,105
-19,060
-1% -$1.7M
ARES icon
81
Ares Management
ARES
$32.1B
$82.8M 0.4%
2,676,607
+98,736
+4% +$3.45M
ROG icon
82
Rogers Corp
ROG
$2.48B
$81.5M 0.4%
863,080
+14,179
+2% +$1.61M
NOVT icon
83
Novanta
NOVT
$6.32B
$81.2M 0.4%
1,016,771
-483
-0% -$43.1K
AZTA icon
84
Azenta
AZTA
$1.47B
$81.2M 0.4%
+2,661,731
New +$96.9M
CCJ icon
85
Cameco
CCJ
$43.1B
$81.1M 0.39%
10,616,122
+8,538,323
+411% +$70M
LECO icon
86
Lincoln Electric
LECO
$15.6B
$81M 0.39%
+1,173,249
New +$101M
AMD icon
87
Advanced Micro Devices
AMD
$788B
$79.6M 0.39%
1,750,980
-305,412
-15% -$14.7M
MDB icon
88
MongoDB
MDB
$35.2B
$78M 0.38%
+571,297
New +$84.4M
TME icon
89
Tencent Music
TME
$13.9B
$77M 0.38%
7,653,897
+915,984
+14% +$11.3M
SBNY
90
DELISTED
Signature Bank
SBNY
$75.8M 0.37%
943,176
+53,124
+6% +$6.67M
HQY icon
91
HealthEquity
HQY
$8.82B
$75.6M 0.37%
+1,494,952
New +$99.3M
CSGP icon
92
CoStar Group
CSGP
$12.4B
$74.8M 0.36%
1,273,670
-13,390
-1% -$873K
META icon
93
Meta Platforms (Facebook)
META
$1.47T
$74M 0.36%
443,373
+83,266
+23% +$16.3M
ENTG icon
94
Entegris
ENTG
$24.6B
$73.1M 0.36%
1,633,168
+506,021
+45% +$26.2M
EL icon
95
Estee Lauder
EL
$31.7B
$71.8M 0.35%
450,905
-24,467
-5% -$4.72M
PTLA
96
DELISTED
Portola Pharmaceuticals, Inc.
PTLA
$71.3M 0.35%
9,999,290
+2,750,218
+38% +$34.3M
CRM icon
97
Salesforce
CRM
$158B
$70.5M 0.34%
489,998
+1,356
+0.3% +$232K
MBB icon
98
iShares MBS ETF
MBB
$39B
$68M 0.33%
+615,550
New +$67M
ICLR icon
99
Icon
ICLR
$12.9B
$66.5M 0.32%
488,904
-11,480
-2% -$1.84M
SE icon
100
Sea Limited
SE
$78.5B
$63.3M 0.31%
1,428,937
+868,332
+155% +$38.9M
2 3
4
5 6

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William Blair Investment Management's Q1 2020 Portfolio in Review

As of Q1 2020, William Blair Investment Management held 396 positions worth $20.5B, down 18% from $25.1B the previous quarter. Its ten largest holdings account for 23% of the portfolio.

William Blair Investment Management's Q1 2020 filing shows 40 new, 177 increased, 118 reduced and 57 closed positions. Its largest new stake was SolarEdge: 1,432,686 shares worth $117M. The largest sale was Vail Resorts, an estimated $240M.

By sector, the portfolio is most concentrated in Technology at 22% of assets, down from 23% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • William Blair Investment Management's largest Q1 2020 buy was SolarEdge: 1,432,686 shares worth $117M.
  • William Blair Investment Management added most to TAL Education Group in Q1 2020, an estimated $224M increase.
  • William Blair Investment Management's biggest Q1 2020 reduction was Check Point Software Technologies, cutting an estimated $173M.
  • William Blair Investment Management fully exited Vail Resorts in Q1 2020, selling an estimated $240M.
  • William Blair Investment Management's ten largest holdings make up 23% of its $20.5B portfolio in Q1 2020.
  • William Blair Investment Management opened 40 new positions and closed 57 in Q1 2020.
  • William Blair Investment Management's portfolio value fell 18% quarter-over-quarter to $20.5B.

Based on William Blair Investment Management's 13F filing for Q1 2020, filed 8 May 2020.