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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
+10.92%
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
$16.3B
AUM Growth
+$1.62B
Cap. Flow
+$161M
Cap. Flow %
0.98%
Top 10 Hldgs %
21.12%
Holding
1,696
New
110
Increased
623
Reduced
570
Closed
77

Top Buys

Rank Stock Value
1
DLB icon
Dolby
DLB
+$37M
2
DSI icon
iShares MSCI KLD 400 Social ETF
DSI
+$20M
3
PGR icon
Progressive
PGR
+$19.6M
4
KMX icon
CarMax
KMX
+$19.2M
5
TYL icon
Tyler Technologies
TYL
+$18.5M

Top Sells

Rank Stock Value
1
SBUX icon
Starbucks
SBUX
+$35.1M
2
META icon
Meta Platforms (Facebook)
META
+$18.3M
3
INGN icon
Inogen
INGN
+$14.6M
4
MKTX icon
MarketAxess Holdings
MKTX
+$13M
5
PF
Pinnacle Foods, Inc.
PF
+$12.6M

Sector Composition

Rank Sector Weight
1 Technology 21.34%
2 Healthcare 18.9%
3 Financials 12.91%
4 Industrials 9.71%
5 Consumer Discretionary 9.37%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
IYW icon
851
iShares US Technology ETF
IYW
$25.1B
$687K ﹤0.01%
14,164
-8,424
-37% -$398K
MCK icon
852
McKesson
MCK
$103B
$686K ﹤0.01%
5,175
-95
-2% -$12.4K
GNMK
853
DELISTED
GenMark Diagnostics, Inc
GNMK
$686K ﹤0.01%
93,266
-3,000
-3% -$22K
IYR icon
854
iShares US Real Estate ETF
IYR
$4.66B
$685K ﹤0.01%
8,566
-1,606
-16% -$131K
TCF
855
DELISTED
TCF Financial Corporation Common Stock
TCF
$683K ﹤0.01%
12,798
+370
+3% +$20.9K
VAW icon
856
Vanguard Materials ETF
VAW
$3.13B
$681K ﹤0.01%
5,191
-1,297
-20% -$173K
ITUB icon
857
Itaú Unibanco
ITUB
$88.8B
$679K ﹤0.01%
127,450
+45,722
+56% +$246K
LNT icon
858
Alliant Energy
LNT
$18.1B
$679K ﹤0.01%
15,946
+307
+2% +$13.2K
USIG icon
859
iShares Broad USD Investment Grade Corporate Bond ETF
USIG
$17.3B
$674K ﹤0.01%
12,574
– –
QADA
860
DELISTED
QAD Inc.
QADA
$672K ﹤0.01%
11,863
+500
+4% +$27.3K
COR icon
861
Cencora
COR
$61.5B
$671K ﹤0.01%
7,281
+3,292
+83% +$285K
ONB icon
862
Old National Bancorp
ONB
$10.2B
$670K ﹤0.01%
34,700
– –
FDS icon
863
Factset
FDS
$10.1B
$667K ﹤0.01%
2,980
+264
+10% +$57.3K
CNA icon
864
CNA Financial
CNA
$14.2B
$666K ﹤0.01%
14,580
+8,456
+138% +$391K
MFNC
865
DELISTED
Mackinac Financial Corporation
MFNC
$665K ﹤0.01%
41,064
– –
CLB icon
866
Core Laboratories
CLB
$518M
$664K ﹤0.01%
5,729
+109
+2% +$12.3K
DNP icon
867
DNP Select Income Fund
DNP
$4.09B
$664K ﹤0.01%
60,003
-34
-0.1% -$374
SLRC icon
868
SLR Investment Corp
SLRC
$716M
$660K ﹤0.01%
30,886
– –
ACRS icon
869
Aclaris Therapeutics
ACRS
$796M
$656K ﹤0.01%
45,158
-44,397
-50% -$761K
IQV icon
870
IQVIA
IQV
$38.8B
$655K ﹤0.01%
5,052
+407
+9% +$48.9K
J icon
871
Jacobs Solutions
J
$17.1B
$653K ﹤0.01%
10,314
-615
-6% -$36.1K
GDV icon
872
Gabelli Dividend & Income Trust
GDV
$2.65B
$643K ﹤0.01%
26,924
+636
+2% +$15.1K
KERX
873
DELISTED
Keryx Biopharmaceuticals Inc
KERX
$639K ﹤0.01%
187,900
-7,000
-4% -$25.2K
THO icon
874
Thor Industries
THO
$4.12B
$636K ﹤0.01%
7,596
+211
+3% +$20.2K
EXPE icon
875
Expedia Group
EXPE
$36.9B
$635K ﹤0.01%
4,867
-1,949
-29% -$253K
33 34
35
36 37

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William Blair & Company's Q3 2018 Portfolio in Review

As of Q3 2018, William Blair & Company held 1,696 positions worth $16.3B, up 11% from $14.7B the previous quarter. Its ten largest holdings account for 21% of the portfolio.

William Blair & Company's Q3 2018 filing shows 110 new, 623 increased, 570 reduced and 77 closed positions. Its largest new stake was Marvell Technology: 234,218 shares worth $4.52M. The largest sale was Starbucks, an estimated $35.1M.

By sector, the portfolio is most concentrated in Technology at 21% of assets, up from 20% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q3 2018 buy was Marvell Technology: 234,218 shares worth $4.52M.
  • William Blair & Company added most to Dolby in Q3 2018, an estimated $37M increase.
  • William Blair & Company's biggest Q3 2018 reduction was Starbucks, cutting an estimated $35.1M.
  • William Blair & Company fully exited Williams Partners L.P. in Q3 2018, selling an estimated $7.8M.
  • William Blair & Company's ten largest holdings make up 21% of its $16.3B portfolio in Q3 2018.
  • William Blair & Company opened 110 new positions and closed 77 in Q3 2018.
  • William Blair & Company's portfolio value rose 11% quarter-over-quarter to $16.3B.

Based on William Blair & Company's 13F filing for Q3 2018, filed 13 Nov 2018.