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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
SIRO
51
DELISTED
SIRONA DENTAL SYSTEMS INC COM STK
SIRO
$57.3M 0.54%
522,878
-96,947
-16% -$10.4M
ICE icon
52
Intercontinental Exchange
ICE
$85.6B
$56.9M 0.53%
1,109,895
-225,875
-17% -$11.4M
LOW icon
53
Lowe's Companies
LOW
$117B
$56.8M 0.53%
747,171
-358,620
-32% -$26.6M
NTRS icon
54
Northern Trust
NTRS
$33.3B
$56.3M 0.53%
781,653
+19,255
+3% +$1.38M
TSCO icon
55
Tractor Supply
TSCO
$16.1B
$56.1M 0.53%
3,282,475
-122,480
-4% -$2.17M
CHKP icon
56
Check Point Software Technologies
CHKP
$13B
$53.9M 0.51%
661,993
-22,264
-3% -$1.85M
BFAM icon
57
Bright Horizons
BFAM
$3.92B
$53.8M 0.51%
805,298
-1,948
-0.2% -$126K
BKNG icon
58
Booking.com
BKNG
$149B
$53.5M 0.5%
1,048,300
-227,625
-18% -$12M
HD icon
59
Home Depot
HD
$331B
$53.1M 0.5%
401,208
-20,165
-5% -$2.57M
WSO icon
60
Watsco Inc
WSO
$12.7B
$52.8M 0.5%
450,889
+74,023
+20% +$9.13M
PRGO icon
61
Perrigo
PRGO
$1.4B
$52M 0.49%
359,030
+15,176
+4% +$2.33M
SCHW
62
Charles Schwab
SCHW
$183B
$51.6M 0.48%
1,567,599
+24,984
+2% +$791K
UPS icon
63
United Parcel Service
UPS
$88.6B
$51.6M 0.48%
536,346
+36,121
+7% +$3.69M
JPM icon
64
JPMorgan Chase
JPM
$935B
$51.4M 0.48%
778,966
+164,763
+27% +$10.7M
APH icon
65
Amphenol
APH
$198B
$51.1M 0.48%
3,914,004
+206,696
+6% +$2.76M
GWW icon
66
W.W. Grainger
GWW
$65.3B
$50.9M 0.48%
251,470
-13,018
-5% -$2.67M
UNP icon
67
Union Pacific
UNP
$174B
$49.5M 0.46%
633,072
-6,976
-1% -$598K
VEU icon
68
Vanguard FTSE All-World ex-US ETF
VEU
$66.6B
$48.5M 0.46%
1,117,204
-38,223
-3% -$1.71M
KMX icon
69
CarMax
KMX
$8.13B
$47.4M 0.45%
878,515
+92,429
+12% +$5.28M
PRLB icon
70
Protolabs
PRLB
$1.79B
$47M 0.44%
738,661
+5,644
+0.8% +$364K
AME icon
71
Ametek
AME
$55.4B
$46.4M 0.44%
864,991
-286,503
-25% -$15.7M
AYI icon
72
Acuity Brands
AYI
$9.83B
$46.2M 0.43%
197,615
+7,322
+4% +$1.59M
SBNY
73
DELISTED
Signature Bank
SBNY
$44.6M 0.42%
290,660
-92,031
-24% -$13.9M
ABBV icon
74
AbbVie
ABBV
$443B
$42.9M 0.4%
724,723
-90,914
-11% -$5.24M
BRK.B icon
75
Berkshire Hathaway Class B
BRK.B
$1.1T
$42.3M 0.4%
320,179
-31,636
-9% -$4.25M
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.