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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
LAD icon
301
Lithia Motors
LAD
$8.35B
$12.7M 0.05%
105,739
+4,507
+4% +$472K
EXTN
302
DELISTED
Exterran Corporation
EXTN
$12.4M 0.04%
392,800
-750
-0.2% -$20.7K
NEO icon
303
NeoGenomics
NEO
$2.14B
$12.3M 0.04%
1,109,644
+321,345
+41% +$3.13M
AX icon
304
Axos Financial
AX
$5.63B
$12.1M 0.04%
423,251
+119,015
+39% +$3.11M
AWI icon
305
Armstrong World Industries
AWI
$7.75B
$11.9M 0.04%
232,722
+22,552
+11% +$1.06M
JOBS
306
DELISTED
51job Inc
JOBS
$10.5M 0.04%
+173,552
New +$9.46M
ACC
307
DELISTED
American Campus Communities, Inc.
ACC
$10.5M 0.04%
237,590
+53,616
+29% +$2.54M
PRMW
308
DELISTED
Primo Water Corporation
PRMW
$10.5M 0.04%
883,267
+331,334
+60% +$4.02M
MRCY icon
309
Mercury Systems
MRCY
$6.52B
$10.1M 0.04%
195,390
-166,200
-46% -$7.66M
HOME
310
DELISTED
At Home Group Inc.
HOME
$10.1M 0.04%
442,609
-21,044
-5% -$484K
CDXS icon
311
Codexis
CDXS
$161M
$10.1M 0.04%
1,513,444
+423,372
+39% +$2.34M
BHP icon
312
BHP
BHP
$230B
$9.97M 0.04%
275,774
-259,307
-48% -$9.48M
MGPI icon
313
MGP Ingredients
MGPI
$381M
$9.66M 0.03%
159,399
+7,248
+5% +$415K
AORT icon
314
Artivion
AORT
$1.28B
$9.62M 0.03%
423,887
+197,478
+87% +$3.98M
HLX icon
315
Helix Energy Solutions
HLX
$1.47B
$9.49M 0.03%
1,283,640
-2,360
-0.2% -$14.9K
CTLP
316
DELISTED
Cantaloupe
CTLP
$9.43M 0.03%
1,509,361
+66,371
+5% +$357K
NVR icon
317
NVR
NVR
$16.8B
$9.42M 0.03%
3,300
– –
QTWO icon
318
Q2 Holdings
QTWO
$3.96B
$9.37M 0.03%
224,881
+10,185
+5% +$398K
ARGT icon
319
Global X MSCI Argentina ETF
ARGT
$830M
$9.29M 0.03%
292,200
-8,500
-3% -$254K
LFUS icon
320
Littelfuse
LFUS
$11.6B
$9.27M 0.03%
47,299
+2,143
+5% +$389K
NTRI
321
DELISTED
NutriSystem, Inc.
NTRI
$9M 0.03%
161,008
+7,315
+5% +$396K
IMAX icon
322
IMAX
IMAX
$2.81B
$8.85M 0.03%
390,596
+350,547
+875% +$7.22M
ENTL
323
DELISTED
Entellus Medical, Inc. Common Stock
ENTL
$8.34M 0.03%
451,689
+20,502
+5% +$355K
COWN
324
DELISTED
Cowen Inc. Class A Common Stock
COWN
$8.16M 0.03%
458,308
+20,811
+5% +$341K
WNS
325
DELISTED
WNS Holdings
WNS
$7.97M 0.03%
+218,483
New +$7.68M
11 12
13
14 15

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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.