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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
+8.82%
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
$27.9B
AUM Growth
+$434M
Cap. Flow
-$1.39B
Cap. Flow %
-4.97%
Top 10 Hldgs %
16.81%
Holding
485
New
38
Increased
170
Reduced
217
Closed
52

Top Buys

Rank Stock Value
1
RCI icon
Rogers Communications
RCI
+$124M
2
WEX icon
WEX
WEX
+$108M
3
DXCM icon
DexCom
DXCM
+$100M
4
TSM icon
TSMC
TSM
+$99.8M
5
YELP icon
Yelp
YELP
+$93.8M

Top Sells

Rank Stock Value
1
ORLY icon
O'Reilly Automotive
ORLY
+$155M
2
SBNY
Signature Bank
SBNY
+$152M
3
ODFL icon
Old Dominion Freight Line
ODFL
+$132M
4
BABA icon
Alibaba
BABA
+$128M
5
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$119M

Sector Composition

Rank Sector Weight
1 Consumer Discretionary 15.32%
2 Industrials 13.97%
3 Financials 13.47%
4 Technology 12.68%
5 Healthcare 12.14%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
FANG icon
126
Diamondback Energy
FANG
$55.6B
$66.9M 0.24%
682,498
+537
+0.1% +$49.4K
LQD icon
127
iShares iBoxx $ Investment Grade Corporate Bond ETF
LQD
$32.6B
$66.2M 0.24%
545,900
-26,500
-5% -$3.2M
CX icon
128
Cemex
CX
$16.4B
$64.8M 0.23%
7,140,407
+1,759,054
+33% +$16.7M
ICLR icon
129
Icon
ICLR
$12.8B
$63.4M 0.23%
556,296
-8,650
-2% -$919K
HGV icon
130
Hilton Grand Vacations
HGV
$3.32B
$61.2M 0.22%
+1,584,355
New +$57.4M
GKOS icon
131
Glaukos
GKOS
$10.7B
$60.8M 0.22%
1,841,991
-322,773
-15% -$12.3M
VIRT icon
132
Virtu Financial
VIRT
$4.95B
$59.8M 0.21%
3,691,245
+940,407
+34% +$15.9M
CABO icon
133
Cable One
CABO
$203M
$59.3M 0.21%
82,117
+763
+0.9% +$564K
GOOG icon
134
Alphabet (Google) Class C
GOOG
$4.34T
$58.5M 0.21%
1,219,640
-578,700
-32% -$27M
RSX
135
DELISTED
VanEck Russia ETF
RSX
$55.1M 0.2%
2,471,500
-443,800
-15% -$9.16M
HON icon
136
Honeywell
HON
$77B
$54.9M 0.2%
428,515
-5,634
-1% -$699K
BA icon
137
Boeing
BA
$184B
$54.1M 0.19%
+212,927
New +$49.6M
NUS icon
138
Nu Skin
NUS
$252M
$54.1M 0.19%
879,802
+4,365
+0.5% +$268K
XLE icon
139
State Street Energy Select Sector SPDR ETF
XLE
$39.3B
$53.4M 0.19%
+1,560,800
New +$50.8M
WIX icon
140
WIX.com
WIX
$2.6B
$53M 0.19%
736,985
+143,733
+24% +$9.56M
CIGI icon
141
Colliers International
CIGI
$5.1B
$52M 0.19%
1,046,426
-274,606
-21% -$14.3M
FITB
142
Fifth Third Bancorp
FITB
$51.7B
$51.4M 0.18%
1,836,780
+360,713
+24% +$9.57M
AAMI
143
Acadian Asset Management
AAMI
$3.22B
$50.8M 0.18%
3,405,176
+11,517
+0.3% +$164K
BMA icon
144
Banco Macro
BMA
$5.42B
$50.6M 0.18%
431,199
-16,560
-4% -$1.61M
GS icon
145
Goldman Sachs
GS
$301B
$49.8M 0.18%
209,763
-33,626
-14% -$7.58M
AVGO icon
146
Broadcom
AVGO
$2.01T
$49.6M 0.18%
2,046,370
-26,900
-1% -$665K
RAMP icon
147
LiveRamp
RAMP
$2.29B
$49.5M 0.18%
2,007,391
+129,014
+7% +$3.17M
EMB icon
148
iShares JPMorgan USD Emerging Markets Bond ETF
EMB
$14.9B
$49.3M 0.18%
423,100
-11,900
-3% -$1.37M
TMO icon
149
Thermo Fisher Scientific
TMO
$221B
$48.8M 0.17%
257,831
-3,371
-1% -$611K
XLU icon
150
State Street Utilities Select Sector SPDR ETF
XLU
$22.4B
$48.3M 0.17%
1,819,400
-110,400
-6% -$2.96M
4 5
6
7 8

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William Blair Investment Management's Q3 2017 Portfolio in Review

As of Q3 2017, William Blair Investment Management held 485 positions worth $27.9B, up 1.6% from $27.5B the previous quarter. Its ten largest holdings account for 17% of the portfolio.

William Blair Investment Management withdrew a net $1.39B in Q3 2017, closing 52 positions and reducing 217 holdings. Its most notable exit was Amedisys, an estimated $91.9M position sold in full.

By sector, the portfolio is most concentrated in Consumer Discretionary at 15% of assets, down from 16% a quarter earlier, followed by Industrials and Financials.

Against the trend, William Blair Investment Management opened a new position in Rogers Communications worth $125M.

  • William Blair Investment Management's largest Q3 2017 buy was Rogers Communications: 2,429,600 shares worth $125M.
  • William Blair Investment Management added most to TSMC in Q3 2017, an estimated $99.8M increase.
  • William Blair Investment Management's biggest Q3 2017 reduction was O'Reilly Automotive, cutting an estimated $155M.
  • William Blair Investment Management fully exited Amedisys in Q3 2017, selling an estimated $91.9M.
  • William Blair Investment Management's ten largest holdings make up 17% of its $27.9B portfolio in Q3 2017.
  • William Blair Investment Management opened 38 new positions and closed 52 in Q3 2017.
  • William Blair Investment Management's portfolio value rose 1.6% quarter-over-quarter to $27.9B.

Based on William Blair Investment Management's 13F filing for Q3 2017, filed 13 Nov 2017.