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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
RPAY icon
276
Repay Holdings
RPAY
$311M
$6.27M 0.03%
437,053
-395,808
-48% -$6.49M
NDSN icon
277
Nordson
NDSN
$17.3B
$6.17M 0.03%
45,698
+22,839
+100% +$3.52M
STL
278
DELISTED
Sterling Bancorp
STL
$6.15M 0.03%
588,329
-22,844
-4% -$394K
SASR
279
DELISTED
Sandy Spring Bancorp Inc
SASR
$6.1M 0.03%
269,623
-11,642
-4% -$371K
SXT icon
280
Sensient Technologies
SXT
$5.55B
$6.08M 0.03%
139,631
-5,845
-4% -$322K
IFS icon
281
Intercorp Financial Services
IFS
$6.06B
$6M 0.03%
216,635
-178,359
-45% -$6.74M
MTX icon
282
Minerals Technologies
MTX
$2.25B
$5.93M 0.03%
163,670
-8,181
-5% -$396K
MDC
283
DELISTED
M.D.C. Holdings, Inc.
MDC
$5.93M 0.03%
276,219
-118,207
-30% -$4.14M
FMC icon
284
FMC
FMC
$1.28B
$5.78M 0.03%
70,754
+26,214
+59% +$2.43M
PRMW
285
DELISTED
Primo Water Corporation
PRMW
$5.73M 0.03%
632,230
+392,950
+164% +$5.34M
BLD
286
DELISTED
TopBuild
BLD
$5.66M 0.03%
+78,949
New +$8.06M
SHOP icon
287
Shopify
SHOP
$194B
$5.62M 0.03%
134,790
-84,990
-39% -$3.83M
CRI icon
288
Carter's
CRI
$1.43B
$5.59M 0.03%
85,109
-111,906
-57% -$10.8M
MGLN
289
DELISTED
Magellan Health Services, Inc.
MGLN
$5.39M 0.03%
112,022
-4,710
-4% -$303K
SAP icon
290
SAP
SAP
$236B
$5.12M 0.02%
46,328
-7,006
-13% -$884K
IBN icon
291
ICICI Bank
IBN
$107B
$5.09M 0.02%
596,311
-533,324
-47% -$7.06M
MANT
292
DELISTED
Mantech International Corp
MANT
$5.07M 0.02%
+69,735
New +$5.44M
LITE icon
293
Lumentum
LITE
$82.6B
$4.74M 0.02%
+64,370
New +$5.07M
CASY icon
294
Casey's General Stores
CASY
$31B
$4.7M 0.02%
+35,504
New +$5.75M
DECK icon
295
Deckers Outdoor
DECK
$12.4B
$4.64M 0.02%
+207,912
New +$5.78M
ECL icon
296
Ecolab
ECL
$78.1B
$4.6M 0.02%
29,529
POR icon
297
Portland General Electric
POR
$5.74B
$4.52M 0.02%
+94,194
New +$5.28M
CE icon
298
Celanese
CE
$4.75B
$4.46M 0.02%
+60,699
New +$6M
AVNT icon
299
Avient
AVNT
$4.16B
$4.42M 0.02%
232,869
-9,456
-4% -$265K
CVCO icon
300
Cavco Industries
CVCO
$4.6B
$4.39M 0.02%
+30,266
New +$5.95M

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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.