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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

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
CRS icon
301
Carpenter Technology
CRS
$26.3B
$4.16M 0.02%
213,508
-10,844
-5% -$404K
BANC icon
302
Banc of California
BANC
$3.1B
$4.13M 0.02%
515,739
-23,690
-4% -$348K
NGVT icon
303
Ingevity
NGVT
$2.62B
$4.1M 0.02%
116,351
+77,844
+202% +$4.55M
DEO icon
304
Diageo
DEO
$52.2B
$4.01M 0.02%
31,563
-11,320
-26% -$1.7M
MD icon
305
Pediatrix Medical
MD
$2.15B
$3.88M 0.02%
332,983
+206,906
+164% +$4.27M
BDC icon
306
Belden
BDC
$5.39B
$3.74M 0.02%
103,544
-134,843
-57% -$6.18M
FAF icon
307
First American
FAF
$7.38B
$3.68M 0.02%
+86,666
New +$4.95M
AVT icon
308
Avnet
AVT
$7.98B
$3.67M 0.02%
146,203
-119,294
-45% -$4.07M
NVO
309
Novo Nordisk
NVO
$203B
$3.65M 0.02%
121,088
-17,542
-13% -$522K
AROC icon
310
Archrock
AROC
$5.84B
$3.62M 0.02%
961,935
-44,178
-4% -$319K
RELX icon
311
RELX
RELX
$60.2B
$3.54M 0.02%
165,632
-23,521
-12% -$571K
NVS icon
312
Novartis
NVS
$290B
$3.53M 0.02%
42,861
-6,967
-14% -$622K
CVSA
313
Covista Inc
CVSA
$4.36B
$3.44M 0.02%
+128,558
New +$4.09M
XLU icon
314
State Street Utilities Select Sector SPDR ETF
XLU
$22.8B
$3.25M 0.02%
117,220
-680
-0.6% -$21.7K
PHG icon
315
Philips
PHG
$26.2B
$3.14M 0.02%
98,480
-11,677
-11% -$413K
CHKP icon
316
Check Point Software Technologies
CHKP
$13.2B
$2.92M 0.01%
29,001
-1,612,563
-98% -$173M
HHR
317
DELISTED
HeadHunter Group PLC American Depositary Shares
HHR
$2.63M 0.01%
+164,907
New +$3.45M
RSX
318
DELISTED
VanEck Russia ETF
RSX
$2.53M 0.01%
151,900
+4,100
+3% +$91.6K
ASML icon
319
ASML
ASML
$695B
$2.33M 0.01%
+8,917
New +$2.54M
WB icon
320
Weibo
WB
$1.91B
$2.26M 0.01%
68,302
+13,901
+26% +$589K
TCOM icon
321
Trip.com Group
TCOM
$28.7B
$2.25M 0.01%
96,178
+36,288
+61% +$1.13M
VTWO icon
322
Vanguard Russell 2000 ETF
VTWO
$17.4B
$1.85M 0.01%
40,208
IPG
323
DELISTED
Interpublic Group of Companies
IPG
$1.73M 0.01%
+106,899
New +$2.26M
DCI icon
324
Donaldson
DCI
$11.2B
$1.62M 0.01%
41,919
NXPI icon
325
NXP Semiconductors
NXPI
$58.9B
$1.54M 0.01%
18,538
-34,373
-65% -$4.03M

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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.