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William Blair & Company

William Blair & Company Portfolio holdings

AUM $34.9B
1-Year Est. Return 18.88%
This Fund
S&P 500
This Quarter Est. Return
+5.93%
1 Year Est. Return
+18.88%
3 Year Est. Return
+73.84%
5 Year Est. Return
+90.13%
10 Year Est. Return
+512.03%
AUM
$10.7B
AUM Growth
-$908M
Cap. Flow
-$1.39B
Cap. Flow %
-13.04%
Top 10 Hldgs %
17.51%
Holding
1,529
New
105
Increased
364
Reduced
634
Closed
286

Top Buys

Rank Stock Value
1
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$66.7M
2
G icon
Genpact
G
+$27.6M
3
ZTS icon
Zoetis
ZTS
+$17.2M
4
MBLY
Mobileye N.V.
MBLY
+$16.2M
5
PLAY icon
Dave & Buster's
PLAY
+$13.9M

Top Sells

Rank Stock Value
1
GOOG icon
Alphabet (Google) Class C
GOOG
+$104M
2
GILD icon
Gilead Sciences
GILD
+$42.3M
3
MA icon
Mastercard
MA
+$37.4M
4
MJN
Mead Johnson Nutrition Company
MJN
+$37.4M
5
AMZN icon
Amazon
AMZN
+$33.3M

Sector Composition

Rank Sector Weight
1 Healthcare 19.61%
2 Technology 14.78%
3 Industrials 12.48%
4 Financials 12.35%
5 Consumer Discretionary 11.45%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
HEFA icon
326
iShares Currency Hedged MSCI EAFE ETF
HEFA
$7.65B
$3.86M 0.04%
+152,117
New +$3.95M
IPHI
327
DELISTED
INPHI CORPORATION
IPHI
$3.84M 0.04%
142,271
-10,154
-7% -$290K
IVV icon
328
iShares Core S&P 500 ETF
IVV
$900B
$3.82M 0.04%
18,641
+697
+4% +$144K
ALL icon
329
Allstate
ALL
$68B
$3.81M 0.04%
61,407
-16,425
-21% -$1.02M
RAX
330
DELISTED
Rackspace Hosting Inc
RAX
$3.81M 0.04%
150,500
+9,840
+7% +$261K
CATM
331
DELISTED
Cardtronics plc Class A Ordinary Shares (UK)
CATM
$3.81M 0.04%
113,181
+77,852
+220% +$2.7M
ATR icon
332
AptarGroup
ATR
$8.66B
$3.77M 0.04%
51,908
-2,957
-5% -$214K
KDNY
333
DELISTED
Chinook Therapeutics, Inc. Common Stock
KDNY
$3.71M 0.03%
26,388
+8,295
+46% +$1.13M
IRDM icon
334
Iridium Communications
IRDM
$5.15B
$3.69M 0.03%
438,752
+29,252
+7% +$223K
ACWI icon
335
iShares MSCI ACWI ETF
ACWI
$33.4B
$3.6M 0.03%
64,557
+18,140
+39% +$1.04M
KHC icon
336
Kraft Heinz
KHC
$30.4B
$3.6M 0.03%
49,481
+3,116
+7% +$230K
GNRC icon
337
Generac Holdings
GNRC
$13.1B
$3.58M 0.03%
120,175
+37,540
+45% +$1.12M
ALXN
338
DELISTED
Alexion Pharmaceuticals
ALXN
$3.57M 0.03%
18,713
+11,409
+156% +$1.99M
XLNX
339
DELISTED
Xilinx Inc
XLNX
$3.55M 0.03%
75,631
-1,173
-2% -$55.4K
MCK icon
340
McKesson
MCK
$100B
$3.55M 0.03%
18,009
+503
+3% +$95K
JBTM
341
JBT Marel
JBTM
$6.42B
$3.53M 0.03%
70,765
-2,375
-3% -$108K
BHC icon
342
Bausch Health
BHC
$2.33B
$3.52M 0.03%
34,625
+28,675
+482% +$3.22M
CDK
343
DELISTED
CDK Global, Inc.
CDK
$3.5M 0.03%
73,720
-2,223
-3% -$108K
KCG
344
DELISTED
KCG Holdings, Inc.
KCG
$3.48M 0.03%
283,156
-941,192
-77% -$11.7M
TGT icon
345
Target
TGT
$67.2B
$3.48M 0.03%
47,986
-8,632
-15% -$644K
TXTR
346
DELISTED
TEXTURA CORPORATION COM
TXTR
$3.48M 0.03%
161,240
+22,827
+16% +$577K
MDLZ icon
347
Mondelez International
MDLZ
$79.8B
$3.45M 0.03%
76,964
-1,801
-2% -$80.6K
AAC
348
DELISTED
AAC Holdings
AAC
$3.41M 0.03%
179,015
+4,625
+3% +$109K
EFV icon
349
iShares MSCI EAFE Value ETF
EFV
$29.2B
$3.38M 0.03%
72,700
+6,400
+10% +$309K
IWR icon
350
iShares Russell Mid-Cap ETF
IWR
$57.1B
$3.38M 0.03%
84,296
-996
-1% -$40.6K
12 13
14
15 16

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William Blair & Company's Q4 2015 Portfolio in Review

As of Q4 2015, William Blair & Company held 1,529 positions worth $10.7B, down 7.9% from $11.6B the previous quarter. Its ten largest holdings account for 18% of the portfolio.

William Blair & Company withdrew a net $1.39B in Q4 2015, closing 286 positions and reducing 634 holdings. Its most notable exit was Barracuda Networks, Inc., an estimated $7.62M position sold in full.

By sector, the portfolio is most concentrated in Healthcare at 20% of assets, up from 19% a quarter earlier, followed by Technology and Industrials.

Against the trend, William Blair & Company opened a new position in Alphabet (Google) Class A worth $70.1M.

  • William Blair & Company's largest Q4 2015 buy was Alphabet (Google) Class A: 1,802,460 shares worth $70.1M.
  • William Blair & Company added most to Zoetis in Q4 2015, an estimated $17.2M increase.
  • William Blair & Company's biggest Q4 2015 reduction was Alphabet (Google) Class C, cutting an estimated $104M.
  • William Blair & Company fully exited Barracuda Networks, Inc. in Q4 2015, selling an estimated $7.62M.
  • William Blair & Company's ten largest holdings make up 18% of its $10.7B portfolio in Q4 2015.
  • William Blair & Company opened 105 new positions and closed 286 in Q4 2015.
  • William Blair & Company's portfolio value fell 7.9% quarter-over-quarter to $10.7B.

Based on William Blair & Company's 13F filing for Q4 2015, filed 16 Feb 2016.