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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
+6.55%
1 Year Est. Return
+33.75%
3 Year Est. Return
+108.55%
5 Year Est. Return
+126.9%
10 Year Est. Return
+788.31%
AUM
$25.7B
AUM Growth
-$2.19B
Cap. Flow
-$3.7B
Cap. Flow %
-14.37%
Top 10 Hldgs %
17.87%
Holding
463
New
30
Increased
148
Reduced
245
Closed
36

Top Sells

Rank Stock Value
1
WP
Worldpay, Inc.
WP
+$346M
2
SBAC icon
SBA Communications
SBAC
+$258M
3
CNC icon
Centene
CNC
+$212M
4
ALGN icon
Align Technology
ALGN
+$207M
5
BABA icon
Alibaba
BABA
+$194M

Sector Composition

Rank Sector Weight
1 Financials 14.64%
2 Consumer Discretionary 14.51%
3 Technology 13.93%
4 Industrials 13.62%
5 Healthcare 11.44%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake
Capital Flow
WSO icon
201
Watsco Inc
WSO
$13.5B
$27.7M 0.11%
162,792
-72,640
-31% -$12M
FNB icon
202
FNB Corp
FNB
$6.74B
$27.3M 0.11%
1,978,591
-6,264
-0.3% -$86.1K
WSFS icon
203
WSFS Financial
WSFS
$4.13B
$27.1M 0.11%
565,386
-5,329
-0.9% -$263K
FM
204
DELISTED
iShares Frontier and Select EM ETF
FM
$27M 0.11%
815,704
-385,846
-32% -$12.5M
JJSF icon
205
J&J Snack Foods
JJSF
$1.68B
$27M 0.1%
177,789
-1,902
-1% -$267K
WAL icon
206
Western Alliance Bancorporation
WAL
$8.77B
$26.8M 0.1%
473,289
-4,801
-1% -$267K
PLCE icon
207
Children's Place
PLCE
$58.9M
$26.7M 0.1%
183,480
-1,570
-0.8% -$191K
MGA icon
208
Magna International
MGA
$18.8B
$26.6M 0.1%
467,912
+370,644
+381% +$20.4M
FAF icon
209
First American
FAF
$7.48B
$26.4M 0.1%
470,193
-4,336
-0.9% -$233K
COBZ
210
DELISTED
CoBiz Financial,Inc
COBZ
$26.3M 0.1%
1,313,674
-18,367
-1% -$372K
CPK icon
211
Chesapeake Utilities
CPK
$3.21B
$26.1M 0.1%
332,218
+29,037
+10% +$2.35M
BDC icon
212
Belden
BDC
$5.23B
$25.9M 0.1%
335,314
-2,973
-0.9% -$246K
SIMO icon
213
Silicon Motion
SIMO
$7.92B
$25.6M 0.1%
482,607
-5,229
-1% -$265K
EDR
214
DELISTED
Education Realty Trust Inc
EDR
$25.4M 0.1%
726,594
+151,998
+26% +$5.48M
BSX icon
215
Boston Scientific
BSX
$73.1B
$25.2M 0.1%
1,017,823
-495,740
-33% -$13.7M
IXC icon
216
iShares Global Energy ETF
IXC
$2.69B
$24.9M 0.1%
701,300
-34,300
-5% -$1.18M
HR
217
DELISTED
Healthcare Realty Trust Incorporated
HR
$24.9M 0.1%
774,064
+116,199
+18% +$3.77M
AAT
218
American Assets Trust
AAT
$1.38B
$24.6M 0.1%
643,088
+131,940
+26% +$5.19M
TRNO icon
219
Terreno Realty
TRNO
$7.41B
$24.4M 0.09%
694,801
+7,972
+1% +$293K
EWM icon
220
iShares MSCI Malaysia ETF
EWM
$331M
$24.2M 0.09%
734,005
-1,695
-0.2% -$54.9K
CNO icon
221
CNO Financial Group
CNO
$5.16B
$23.9M 0.09%
968,053
-4,879
-0.5% -$119K
AKR icon
222
Acadia Realty Trust
AKR
$2.79B
$23.8M 0.09%
871,587
+97,018
+13% +$2.77M
UMPQ
223
DELISTED
Umpqua Holdings Corp
UMPQ
$23.4M 0.09%
1,124,188
-15,728
-1% -$325K
ROP icon
224
Roper Technologies
ROP
$39.7B
$23M 0.09%
88,743
+78,877
+799% +$20.2M
MGLN
225
DELISTED
Magellan Health Services, Inc.
MGLN
$23M 0.09%
237,840
-2,338
-1% -$207K

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William Blair Investment Management's Q4 2017 Portfolio in Review

As of Q4 2017, William Blair Investment Management held 463 positions worth $25.7B, down 7.9% from $27.9B the previous quarter. Its ten largest holdings account for 18% of the portfolio.

William Blair Investment Management withdrew a net $3.7B in Q4 2017, closing 36 positions and reducing 245 holdings. Its most notable exit was Worldpay, Inc., an estimated $346M position sold in full.

By sector, the portfolio is most concentrated in Financials at 15% of assets, up from 13% a quarter earlier, followed by Consumer Discretionary and Technology.

Against the trend, William Blair Investment Management opened a new position in Teledyne Technologies worth $121M.

  • William Blair Investment Management's largest Q4 2017 buy was Teledyne Technologies: 669,495 shares worth $121M.
  • William Blair Investment Management added most to State Street SPDR S&P 500 ETF Trust in Q4 2017, an estimated $206M increase.
  • William Blair Investment Management's biggest Q4 2017 reduction was SBA Communications, cutting an estimated $258M.
  • William Blair Investment Management fully exited Worldpay, Inc. in Q4 2017, selling an estimated $346M.
  • William Blair Investment Management's ten largest holdings make up 18% of its $25.7B portfolio in Q4 2017.
  • William Blair Investment Management opened 30 new positions and closed 36 in Q4 2017.
  • William Blair Investment Management's portfolio value fell 7.9% quarter-over-quarter to $25.7B.

Based on William Blair Investment Management's 13F filing for Q4 2017, filed 14 Feb 2018.