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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
PRMW
676
DELISTED
Primo Water Corporation
PRMW
$1.22M 0.01%
67,625
+43,250
+177% +$802K
EFX icon
677
Equifax
EFX
$21.4B
$1.22M 0.01%
9,321
+5,083
+120% +$662K
GOGO icon
678
Gogo Inc
GOGO
$484M
$1.21M 0.01%
233,825
-65,716
-22% -$291K
TRHC
679
DELISTED
Tabula Rasa HealthCare, Inc. Common Stock
TRHC
$1.21M 0.01%
14,950
-25,475
-63% -$1.87M
K
680
DELISTED
Kellanova
K
$1.21M 0.01%
18,455
-11,546
-38% -$778K
NFG icon
681
National Fuel Gas
NFG
$7.65B
$1.21M 0.01%
21,584
+590
+3% +$32.6K
GGG icon
682
Graco
GGG
$13.5B
$1.21M 0.01%
26,095
+250
+1% +$11.7K
QDEF icon
683
FlexShares Quality Dividend Defensive Index Fund
QDEF
$561M
$1.21M 0.01%
+25,805
New +$1.2M
VRTX icon
684
Vertex Pharmaceuticals
VRTX
$125B
$1.21M 0.01%
6,263
+47
+0.8% +$8.37K
CSX icon
685
CSX Corp
CSX
$93.3B
$1.2M 0.01%
48,732
+6,273
+15% +$149K
BPOP icon
686
Popular Inc
BPOP
$11.2B
$1.2M 0.01%
23,400
-100
-0.4% -$4.98K
MKTX icon
687
MarketAxess Holdings
MKTX
$5.72B
$1.2M 0.01%
6,703
-67,815
-91% -$13M
SLV icon
688
iShares Silver Trust
SLV
$30.6B
$1.19M 0.01%
86,901
-3,512
-4% -$49.5K
BWA icon
689
BorgWarner
BWA
$14B
$1.18M 0.01%
31,225
+2,047
+7% +$80.4K
RWX icon
690
State Street SPDR Dow Jones International Real Estate ETF
RWX
$269M
$1.17M 0.01%
30,628
– –
IGSB icon
691
iShares 1-5 Year Investment Grade Corporate Bond ETF
IGSB
$23B
$1.17M 0.01%
22,516
-3,730
-14% -$193K
VG
692
DELISTED
Vonage Holdings Corporation
VG
$1.17M 0.01%
82,368
+3,500
+4% +$48.1K
MINT icon
693
PIMCO Enhanced Short Maturity Active Exchange-Traded Fund
MINT
$17B
$1.16M 0.01%
11,418
+7,314
+178% +$742K
BCE icon
694
BCE
BCE
$21.2B
$1.15M 0.01%
28,374
-3,307
-10% -$136K
VDC icon
695
Vanguard Consumer Staples ETF
VDC
$7.99B
$1.15M 0.01%
8,203
+1,141
+16% +$159K
GDDY icon
696
GoDaddy
GDDY
$11.5B
$1.15M 0.01%
13,730
+900
+7% +$70.3K
MNDT
697
DELISTED
Mandiant, Inc. Common Stock
MNDT
$1.15M 0.01%
67,360
-9,975
-13% -$160K
HQL
698
abrdn Life Sciences Investors
HQL
$625M
$1.14M 0.01%
56,022
– –
TRGP icon
699
Targa Resources
TRGP
$55.3B
$1.14M 0.01%
20,284
-1,006
-5% -$53.7K
WAT icon
700
Waters Corp
WAT
$39.7B
$1.14M 0.01%
5,866
+65
+1% +$12.6K
26 27
28
29 30

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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.