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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
+512.03%
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
EOG icon
26
EOG Resources
EOG
$79.2B
$132M 0.81%
1,035,881
-29,151
-3% -$3.54M
FAST icon
27
Fastenal
FAST
$54.7B
$124M 0.76%
8,556,024
-282,844
-3% -$4.03M
P
28
Everpure Inc
P
$25.7B
$122M 0.75%
4,701,034
+390,800
+9% +$9.71M
VRSK icon
29
Verisk Analytics
VRSK
$25.4B
$118M 0.72%
980,589
-1,639
-0.2% -$191K
ICE icon
30
Intercontinental Exchange
ICE
$85.6B
$116M 0.71%
1,552,373
-15,289
-1% -$1.15M
FTV icon
31
Fortive
FTV
$17.9B
$113M 0.69%
2,129,877
+46,759
+2% +$2.4M
GS icon
32
Goldman Sachs
GS
$300B
$113M 0.69%
501,903
-5,268
-1% -$1.23M
BRK.B icon
33
Berkshire Hathaway Class B
BRK.B
$1.1T
$111M 0.68%
519,439
+19,133
+4% +$3.93M
ABMD
34
DELISTED
Abiomed Inc
ABMD
$111M 0.68%
246,098
-10,092
-4% -$3.98M
CSGP icon
35
CoStar Group
CSGP
$11.7B
$107M 0.65%
2,532,970
-29,310
-1% -$1.25M
HD icon
36
Home Depot
HD
$331B
$106M 0.65%
509,477
+3,160
+0.6% +$636K
VEU icon
37
Vanguard FTSE All-World ex-US ETF
VEU
$66.6B
$103M 0.63%
1,980,207
+87,382
+5% +$4.56M
GILD icon
38
Gilead Sciences
GILD
$162B
$102M 0.63%
1,323,672
-42,825
-3% -$3.23M
JNJ icon
39
Johnson & Johnson
JNJ
$618B
$100M 0.61%
724,567
+5,408
+0.8% +$719K
INGN icon
40
Inogen
INGN
$175M
$100M 0.61%
409,763
-63,057
-13% -$14.6M
NFLX icon
41
Netflix
NFLX
$299B
$99.2M 0.61%
2,650,950
+3,980
+0.2% +$144K
VIG icon
42
Vanguard Dividend Appreciation ETF
VIG
$111B
$98.1M 0.6%
886,429
+1,314
+0.1% +$141K
SYK icon
43
Stryker
SYK
$125B
$96.7M 0.59%
544,256
+52,480
+11% +$8.96M
ACN icon
44
Accenture
ACN
$102B
$94.2M 0.58%
553,684
+4,913
+0.9% +$818K
PGR icon
45
Progressive
PGR
$123B
$89.8M 0.55%
1,264,765
+304,189
+32% +$19.6M
ALGN icon
46
Align Technology
ALGN
$12.1B
$88.9M 0.54%
227,281
-6,699
-3% -$2.47M
META icon
47
Meta Platforms (Facebook)
META
$1.42T
$87.5M 0.54%
532,234
-100,841
-16% -$18.3M
APH icon
48
Amphenol
APH
$198B
$82.4M 0.5%
3,506,192
-96,812
-3% -$2.25M
UNP icon
49
Union Pacific
UNP
$174B
$81.2M 0.5%
498,785
-8,394
-2% -$1.26M
KMX icon
50
CarMax
KMX
$8.13B
$81.1M 0.5%
1,085,489
+251,554
+30% +$19.2M
1
2
3 4 5

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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.