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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
FAX
1326
abrdn Asia-Pacific Income Fund
FAX
$595M
$153K ﹤0.01%
6,167
+1,417
+30% +$36K
MUA icon
1327
BlackRock MuniAssets Fund
MUA
$518M
$153K ﹤0.01%
+11,800
New +$156K
NZF icon
1328
Nuveen Municipal Credit Income Fund
NZF
$2.43B
$153K ﹤0.01%
10,610
– –
ZOES
1329
DELISTED
Zoe's Kitchen, Inc.
ZOES
$152K ﹤0.01%
11,940
-3,600
-23% -$41K
IDU icon
1330
iShares US Utilities ETF
IDU
$1.39B
$151K ﹤0.01%
2,250
-680
-23% -$45.9K
PSEC icon
1331
Prospect Capital
PSEC
$1.11B
$147K ﹤0.01%
20,000
+7,000
+54% +$49.5K
HEZU icon
1332
iShares Currency Hedged MSCI Eurozone ETF
HEZU
$584M
$145K ﹤0.01%
4,880
-1,505
-24% -$45K
SPY icon
1333
PUT
State Street SPDR S&P 500 ETF Trust
SPY
$818B
$145K ﹤0.01%
500
– –
JPM.WS
1334
DELISTED
JPMorgan Chase
JPM.WS
$145K ﹤0.01%
2,000
– –
XOP icon
1335
State Street SPDR S&P Oil & Gas Exploration & Production ETF
XOP
$3.52B
$143K ﹤0.01%
825
– –
LSXMA
1336
DELISTED
Liberty Media Corporation Series A Liberty SiriusXM Common Stock
LSXMA
$143K ﹤0.01%
4,569
-1,661
-27% -$55.7K
NVDA icon
1337
PUT
NVIDIA
NVDA
$5.3T
$141K ﹤0.01%
+20,000
New +$130K
ETW
1338
Eaton Vance Tax-Managed Global Buy-Write Opportunities Fund
ETW
$1.05B
$140K ﹤0.01%
11,600
– –
MX icon
1339
Magnachip Semiconductor
MX
$141M
$139K ﹤0.01%
14,000
– –
AGEN
1340
Agenus
AGEN
$312M
$138K ﹤0.01%
3,294
+318
+11% +$12.5K
AG icon
1341
First Majestic Silver
AG
$8.52B
$137K ﹤0.01%
24,180
+742
+3% +$4.6K
IYZ icon
1342
iShares US Telecommunications ETF
IYZ
$1.25B
$137K ﹤0.01%
4,606
– –
ZROZ icon
1343
PIMCO 25+ Year Zero Coupon US Treasury Index Exchange-Traded Fund
ZROZ
$1.27B
$137K ﹤0.01%
1,260
– –
AQN icon
1344
Algonquin Power & Utilities
AQN
$4.43B
$136K ﹤0.01%
+17,000
New +$172K
CMG icon
1345
CALL
Chipotle Mexican Grill
CMG
$42.7B
$136K ﹤0.01%
15,000
-15,000
-50% -$143K
IXUS icon
1346
iShares Core MSCI Total International Stock ETF
IXUS
$59.5B
$136K ﹤0.01%
2,250
-1,831
-45% -$110K
DLS icon
1347
WisdomTree International SmallCap Dividend Fund
DLS
$1.07B
$135K ﹤0.01%
1,891
+1,091
+136% +$77.9K
AKAO
1348
DELISTED
Achaogen Inc
AKAO
$133K ﹤0.01%
33,354
-24,200
-42% -$146K
EWT icon
1349
iShares MSCI Taiwan ETF
EWT
$10.6B
$131K ﹤0.01%
3,483
-250
-7% -$9.26K
GRBK icon
1350
Green Brick Partners
GRBK
$3.07B
$131K ﹤0.01%
13,000
-250
-2% -$2.51K
52 53
54
55 56

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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.