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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
+7.4%
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
$14.7B
AUM Growth
+$1.4B
Cap. Flow
+$534M
Cap. Flow %
3.62%
Top 10 Hldgs %
19%
Holding
1,488
New
131
Increased
528
Reduced
556
Closed
127

Top Buys

Rank Stock Value
1
GOOG icon
Alphabet (Google) Class C
GOOG
+$138M
2
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$63.1M
3
DVAX
Dynavax Technologies
DVAX
+$39.8M
4
VEU icon
Vanguard FTSE All-World ex-US ETF
VEU
+$27.3M
5
VEEV icon
Veeva Systems
VEEV
+$16.3M

Top Sells

Rank Stock Value
1
ZD icon
Ziff Davis
ZD
+$22.1M
2
GE icon
GE Aerospace
GE
+$19.1M
3
EFX icon
Equifax
EFX
+$17.7M
4
NUVA
NuVasive, Inc.
NUVA
+$17.1M
5
WBA
Walgreens Boots Alliance
WBA
+$13.6M

Sector Composition

Rank Sector Weight
1 Healthcare 17.74%
2 Technology 17.58%
3 Financials 14.76%
4 Industrials 10.83%
5 Consumer Discretionary 9.09%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
TWX
426
DELISTED
Time Warner Inc
TWX
$3.69M 0.03%
40,377
-518
-1% -$48.9K
ET icon
427
Energy Transfer Partners
ET
$70.1B
$3.68M 0.03%
213,063
-4,054
-2% -$69.1K
TSLA icon
428
Tesla
TSLA
$1.23T
$3.67M 0.02%
177,000
+13,320
+8% +$290K
GPN icon
429
Global Payments
GPN
$23B
$3.67M 0.02%
36,643
+385
+1% +$38.5K
CORP icon
430
PIMCO Investment Grade Corporate Bond Index Exchange-Traded Fund
CORP
$1.57B
$3.63M 0.02%
34,399
+1,147
+3% +$121K
VSAT icon
431
Viasat
VSAT
$10.6B
$3.62M 0.02%
48,337
+16,312
+51% +$1.13M
XLU icon
432
State Street Utilities Select Sector SPDR ETF
XLU
$22.8B
$3.6M 0.02%
136,474
+3,130
+2% +$85.8K
IJK icon
433
iShares S&P Mid-Cap 400 Growth ETF
IJK
$10.7B
$3.58M 0.02%
66,400
-16,944
-20% -$893K
MTX icon
434
Minerals Technologies
MTX
$2.36B
$3.56M 0.02%
51,786
-1,280
-2% -$91K
SEP
435
DELISTED
Spectra Engy Parters Lp
SEP
$3.53M 0.02%
89,388
+619
+0.7% +$26K
FTNT icon
436
Fortinet
FTNT
$119B
$3.52M 0.02%
403,170
-69,625
-15% -$567K
IWO icon
437
iShares Russell 2000 Growth ETF
IWO
$14.3B
$3.49M 0.02%
18,702
-2,403
-11% -$439K
SO icon
438
Southern Company
SO
$109B
$3.48M 0.02%
72,467
+7,623
+12% +$388K
LMNX
439
DELISTED
Luminex Corp
LMNX
$3.47M 0.02%
176,288
-15,181
-8% -$316K
SCHL icon
440
Scholastic
SCHL
$767M
$3.47M 0.02%
86,550
+6,550
+8% +$254K
UBS icon
441
UBS Group
UBS
$173B
$3.42M 0.02%
186,020
+31,759
+21% +$552K
WEC icon
442
WEC Energy
WEC
$35.7B
$3.41M 0.02%
51,380
+45,669
+800% +$3.06M
LSTR icon
443
Landstar System
LSTR
$5.93B
$3.38M 0.02%
32,509
-748
-2% -$75.1K
ZBH icon
444
Zimmer Biomet
ZBH
$18.2B
$3.38M 0.02%
28,821
+2,678
+10% +$303K
CNNE icon
445
Cannae Holdings
CNNE
$639M
$3.37M 0.02%
+197,942
New +$3.42M
PFF icon
446
iShares Preferred and Income Securities ETF
PFF
$13.3B
$3.37M 0.02%
88,460
-10,802
-11% -$415K
AET
447
DELISTED
Aetna Inc
AET
$3.36M 0.02%
18,640
-466
-2% -$80.1K
PNC icon
448
PNC Financial Services
PNC
$99.7B
$3.35M 0.02%
23,249
+1,937
+9% +$268K
BKU icon
449
Bankunited
BKU
$3.37B
$3.34M 0.02%
82,082
+1
+0% +$36
IJH icon
450
iShares Core S&P Mid-Cap ETF
IJH
$122B
$3.31M 0.02%
87,245
-3,245
-4% -$120K
16 17
18
19 20

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William Blair & Company's Q4 2017 Portfolio in Review

As of Q4 2017, William Blair & Company held 1,488 positions worth $14.7B, up 10% from $13.3B the previous quarter. Its ten largest holdings account for 19% of the portfolio.

William Blair & Company deployed $534M of net new capital in Q4 2017, opening 131 new positions and adding to 528 existing holdings. Its largest new stake was Dynavax Technologies: 1,980,526 shares worth $37M.

By sector, the portfolio is most concentrated in Healthcare at 18% of assets, down from 19% a quarter earlier, followed by Technology and Financials.

On the sell side, the largest reduction was Ziff Davis, an estimated $22.1M trimmed.

  • William Blair & Company's largest Q4 2017 buy was Dynavax Technologies: 1,980,526 shares worth $37M.
  • William Blair & Company added most to Alphabet (Google) Class C in Q4 2017, an estimated $138M increase.
  • William Blair & Company's biggest Q4 2017 reduction was Ziff Davis, cutting an estimated $22.1M.
  • William Blair & Company fully exited Bob Evans Farms, Inc. in Q4 2017, selling an estimated $12.5M.
  • William Blair & Company's ten largest holdings make up 19% of its $14.7B portfolio in Q4 2017.
  • William Blair & Company opened 131 new positions and closed 127 in Q4 2017.
  • William Blair & Company's portfolio value rose 10% quarter-over-quarter to $14.7B.

Based on William Blair & Company's 13F filing for Q4 2017, filed 14 Feb 2018.