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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
AAPL icon
1
Apple
AAPL
$5.01T
$283M 2.66%
10,754,288
+104,132
+1% +$2.98M
GILD icon
2
Gilead Sciences
GILD
$166B
$242M 2.27%
2,393,915
-406,216
-15% -$42.3M
SBUX icon
3
Starbucks
SBUX
$119B
$234M 2.19%
3,892,471
+195,350
+5% +$11.9M
V icon
4
Visa
V
$709B
$228M 2.14%
2,936,551
+83,998
+3% +$6.51M
IDXX icon
5
Idexx Laboratories
IDXX
$45B
$183M 1.72%
2,507,472
-26,839
-1% -$1.91M
AMZN icon
6
Amazon
AMZN
$2.47T
$166M 1.56%
4,922,840
-1,055,260
-18% -$33.3M
ESRX
7
DELISTED
Express Scripts Holding Company
ESRX
$137M 1.29%
1,567,319
-14,975
-0.9% -$1.28M
GOOG icon
8
Alphabet (Google) Class C
GOOG
$4.09T
$131M 1.23%
3,460,640
-2,895,960
-46% -$104M
FAST icon
9
Fastenal
FAST
$54.4B
$131M 1.23%
12,821,920
-497,804
-4% -$4.9M
AMG icon
10
Affiliated Managers Group
AMG
$9.62B
$129M 1.22%
810,260
-83,557
-9% -$14.4M
SRCL
11
DELISTED
Stericycle Inc
SRCL
$126M 1.18%
1,046,137
-220,956
-17% -$28.2M
MA icon
12
Mastercard
MA
$502B
$122M 1.14%
1,248,567
-381,557
-23% -$37.4M
WBA
13
DELISTED
Walgreens Boots Alliance
WBA
$112M 1.05%
1,317,673
-7,983
-0.6% -$678K
BMY icon
14
Bristol-Myers Squibb
BMY
$130B
$110M 1.03%
1,599,252
-331,678
-17% -$21.9M
RHT
15
DELISTED
Red Hat Inc
RHT
$108M 1.02%
1,308,395
-328,431
-20% -$26.1M
DHR icon
16
Danaher
DHR
$140B
$104M 0.97%
1,663,271
-166,703
-9% -$10.4M
MSFT icon
17
Microsoft
MSFT
$2.94T
$99.4M 0.93%
1,792,260
+137,473
+8% +$7.23M
CELG
18
DELISTED
Celgene Corp
CELG
$99.2M 0.93%
828,292
+17,131
+2% +$1.98M
ECL icon
19
Ecolab
ECL
$78.9B
$89.8M 0.84%
785,404
+8,732
+1% +$1.03M
DXCM icon
20
DexCom
DXCM
$29.2B
$88.9M 0.83%
4,340,584
+266,644
+7% +$5.55M
META icon
21
Meta Platforms (Facebook)
META
$1.5T
$86.4M 0.81%
825,798
-224,241
-21% -$23M
CERN
22
DELISTED
Cerner Corp
CERN
$86.1M 0.81%
1,430,775
-252,936
-15% -$15.6M
ULTI
23
DELISTED
Ultimate Software Group Inc
ULTI
$84M 0.79%
429,854
-13,691
-3% -$2.68M
ADBE icon
24
Adobe
ADBE
$105B
$83.8M 0.79%
891,942
-103,807
-10% -$9.33M
CRM icon
25
Salesforce
CRM
$154B
$83.5M 0.78%
1,065,051
+13,698
+1% +$1.07M
1
2 3 4 5

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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.