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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
+563.35%
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
CB icon
451
Chubb
CB
$136B
$2.07M 0.02%
+17,738
New +$2.01M
GEL icon
452
Genesis Energy
GEL
$1.82B
$2.07M 0.02%
56,420
+7,969
+16% +$309K
TYL icon
453
Tyler Technologies
TYL
$12.6B
$2.07M 0.02%
11,885
-24,934
-68% -$4.31M
SHPG
454
DELISTED
Shire pic
SHPG
$2.06M 0.02%
10,073
-51,810
-84% -$10.8M
MRSH
455
Marsh
MRSH
$91.4B
$2.06M 0.02%
37,168
+218
+0.6% +$12K
DFS
456
DELISTED
Discover Financial Services
DFS
$2.06M 0.02%
38,397
-4,760
-11% -$264K
SO icon
457
Southern Company
SO
$107B
$2.05M 0.02%
43,849
-53
-0.1% -$2.4K
IBB icon
458
iShares Biotechnology ETF
IBB
$9.47B
$2.04M 0.02%
18,054
+693
+4% +$75.2K
TWTR
459
DELISTED
Twitter, Inc.
TWTR
$2.03M 0.02%
87,865
+60,065
+216% +$1.6M
IJH icon
460
iShares Core S&P Mid-Cap ETF
IJH
$125B
$2.02M 0.02%
72,515
+2,785
+4% +$79.6K
GAS
461
DELISTED
AGL Resources Inc
GAS
$2.01M 0.02%
31,547
-1,461
-4% -$91.2K
RPD icon
462
Rapid7
RPD
$726M
$1.99M 0.02%
131,490
-7,438
-5% -$140K
ETN icon
463
Eaton
ETN
$174B
$1.97M 0.02%
37,947
-5,781
-13% -$313K
IP icon
464
International Paper
IP
$22.4B
$1.96M 0.02%
54,889
+3,485
+7% +$134K
LQD icon
465
iShares iBoxx $ Investment Grade Corporate Bond ETF
LQD
$33B
$1.95M 0.02%
17,129
+976
+6% +$113K
MU icon
466
Micron Technology
MU
$1.01T
$1.95M 0.02%
137,943
+82,704
+150% +$1.32M
INFI
467
DELISTED
Infinity Pharmaceuticals, Inc.
INFI
$1.95M 0.02%
248,751
+211,936
+576% +$1.82M
NFLX icon
468
Netflix
NFLX
$309B
$1.95M 0.02%
170,480
-21,200
-11% -$242K
NLSN
469
DELISTED
Nielsen Holdings plc
NLSN
$1.95M 0.02%
41,786
-4,002
-9% -$188K
BX icon
470
Blackstone
BX
$109B
$1.94M 0.02%
66,445
-62,748
-49% -$2M
VTRS icon
471
Viatris
VTRS
$20.6B
$1.94M 0.02%
35,913
-6,552
-15% -$315K
FBC
472
DELISTED
Flagstar Bancorp, Inc. New
FBC
$1.94M 0.02%
83,830
– –
RPXC
473
DELISTED
RPX Corporation
RPXC
$1.94M 0.02%
175,925
-317,991
-64% -$4.31M
UL icon
474
Unilever
UL
$139B
$1.92M 0.02%
39,619
+2,060
+5% +$101K
IFF icon
475
International Flavors & Fragrances
IFF
$22.5B
$1.9M 0.02%
15,874
-44,910
-74% -$5.2M
17 18
19
20 21

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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.