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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
WELL icon
451
Welltower
WELL
$170B
$3.35M 0.02%
52,022
-898
-2% -$58K
VLO icon
452
Valero Energy
VLO
$87.2B
$3.34M 0.02%
29,338
+2,421
+9% +$275K
CDK
453
DELISTED
CDK Global, Inc.
CDK
$3.31M 0.02%
52,983
-847
-2% -$53.7K
PSXP
454
DELISTED
PHILLIPS 66 PARTNERS LP
PSXP
$3.29M 0.02%
64,353
-3,710
-5% -$194K
LKQ icon
455
LKQ Corp
LKQ
$6.19B
$3.27M 0.02%
103,369
-7,505
-7% -$249K
VMC icon
456
Vulcan Materials
VMC
$36.5B
$3.26M 0.02%
29,339
+3
+0% +$348
RDFN
457
DELISTED
Redfin
RDFN
$3.23M 0.02%
172,876
+31,302
+22% +$662K
NXTM
458
DELISTED
NxStage Medical Inc.
NXTM
$3.21M 0.02%
115,260
+3,315
+3% +$93.2K
ADM icon
459
Archer Daniels Midland
ADM
$37.4B
$3.2M 0.02%
63,591
-15,370
-19% -$754K
XLU icon
460
State Street Utilities Select Sector SPDR ETF
XLU
$22.4B
$3.17M 0.02%
120,566
-7,506
-6% -$199K
GWR
461
DELISTED
Genesee & Wyoming Inc.
GWR
$3.17M 0.02%
34,882
-108
-0.3% -$9.37K
APC
462
DELISTED
Anadarko Petroleum
APC
$3.16M 0.02%
46,814
-513
-1% -$34.6K
XLE icon
463
State Street Energy Select Sector SPDR ETF
XLE
$38.1B
$3.15M 0.02%
83,046
-6,584
-7% -$247K
MIDD icon
464
Middleby
MIDD
$6.03B
$3.13M 0.02%
24,157
-909
-4% -$104K
ZBH icon
465
Zimmer Biomet
ZBH
$18.8B
$3.08M 0.02%
24,088
+70
+0.3% +$8.32K
DFS
466
DELISTED
Discover Financial Services
DFS
$3.05M 0.02%
39,949
+4,097
+11% +$308K
CHRW icon
467
C.H. Robinson
CHRW
$17.1B
$3.04M 0.02%
31,066
-82
-0.3% -$7.69K
ETN icon
468
Eaton
ETN
$174B
$3.04M 0.02%
34,990
-1,750
-5% -$143K
MFC icon
469
Manulife Financial
MFC
$74.1B
$3M 0.02%
167,723
-261
-0.2% -$4.74K
AEP icon
470
American Electric Power
AEP
$68.2B
$2.99M 0.02%
42,223
+7,216
+21% +$513K
EEMV icon
471
iShares MSCI Emerging Markets Min Vol Factor ETF
EEMV
$3.52B
$2.98M 0.02%
50,176
-10,710
-18% -$628K
BKU icon
472
Bankunited
BKU
$3.37B
$2.97M 0.02%
84,009
+1,196
+1% +$47.1K
PFF icon
473
iShares Preferred and Income Securities ETF
PFF
$13.2B
$2.97M 0.02%
80,095
-761
-0.9% -$28.6K
LYV icon
474
Live Nation Entertainment
LYV
$42.3B
$2.96M 0.02%
54,432
+1,830
+3% +$92.7K
MPC icon
475
Marathon Petroleum
MPC
$84B
$2.95M 0.02%
36,897
+6,440
+21% +$509K
17 18
19
20 21

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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.