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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

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
COBZ
201
DELISTED
CoBiz Financial,Inc
COBZ
$26.2M 0.09%
1,332,041
-2,808
-0.2% -$48.9K
PAM icon
202
Pampa Energía
PAM
$4.44B
$26.1M 0.09%
401,092
-319,368
-44% -$18.7M
EWZ icon
203
iShares MSCI Brazil ETF
EWZ
$8.91B
$26.1M 0.09%
626,040
-155,280
-20% -$6.07M
ITGR icon
204
Integer Holdings
ITGR
$4.25B
$26.1M 0.09%
509,613
-1,046
-0.2% -$47.9K
BZUN
205
Baozun
BZUN
$170M
$25.5M 0.09%
+779,377
New +$24.6M
WAL icon
206
Western Alliance Bancorporation
WAL
$8.79B
$25.4M 0.09%
478,090
-926
-0.2% -$45.4K
IDA icon
207
Idacorp
IDA
$8.09B
$25.3M 0.09%
287,399
-1,493
-0.5% -$131K
ATHM icon
208
Autohome
ATHM
$2.68B
$25.2M 0.09%
419,561
+46,824
+13% +$2.68M
GREK
209
Global X MSCI Greece ETF
GREK
$330M
$25.1M 0.09%
883,500
+27,900
+3% +$857K
IXC icon
210
iShares Global Energy ETF
IXC
$2.72B
$25M 0.09%
735,600
-24,200
-3% -$771K
TRNO icon
211
Terreno Realty
TRNO
$7.45B
$24.8M 0.09%
686,829
+16,644
+2% +$584K
ADTN icon
212
Adtran
ADTN
$636M
$24.7M 0.09%
1,029,385
+176,356
+21% +$3.9M
AGN
213
DELISTED
Allergan plc
AGN
$23.9M 0.09%
116,378
-1,649
-1% -$383K
EWM icon
214
iShares MSCI Malaysia ETF
EWM
$330M
$23.8M 0.09%
735,700
-45,500
-6% -$1.46M
CPK icon
215
Chesapeake Utilities
CPK
$3.18B
$23.7M 0.09%
303,181
+14,378
+5% +$1.13M
FAF icon
216
First American
FAF
$7.35B
$23.7M 0.08%
474,529
-929
-0.2% -$44.4K
IBKC
217
DELISTED
IBERIABANK Corp
IBKC
$23.6M 0.08%
287,825
-206,573
-42% -$16.2M
JJSF icon
218
J&J Snack Foods
JJSF
$1.68B
$23.6M 0.08%
179,691
-347
-0.2% -$44.8K
TXNM
219
TXNM Energy Inc
TXNM
$5.91B
$23.5M 0.08%
583,884
-1,142
-0.2% -$46.4K
PB icon
220
Prosperity Bancshares
PB
$8.83B
$23.5M 0.08%
357,743
-706
-0.2% -$44.2K
RNST icon
221
Renasant Corp
RNST
$3.89B
$23.5M 0.08%
547,072
-1,090
-0.2% -$44.9K
SIMO icon
222
Silicon Motion
SIMO
$7.88B
$23.4M 0.08%
487,836
-460,026
-49% -$20.4M
LN
223
DELISTED
LINE Corporation
LN
$23.1M 0.08%
637,422
-18,382
-3% -$647K
BANR icon
224
Banner Corp
BANR
$2.41B
$22.9M 0.08%
374,205
-8,452
-2% -$478K
XLF icon
225
State Street Financial Select Sector SPDR ETF
XLF
$58.9B
$22.7M 0.08%
879,200
+350,600
+66% +$8.75M

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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.