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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
+7.4%
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
$14.7B
AUM Growth
+$1.4B
Cap. Flow
+$534M
Cap. Flow %
3.62%
Top 10 Hldgs %
19%
Holding
1,488
New
131
Increased
528
Reduced
556
Closed
127

Top Buys

Rank Stock Value
1
GOOG icon
Alphabet (Google) Class C
GOOG
+$138M
2
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$63.1M
3
DVAX
Dynavax Technologies
DVAX
+$39.8M
4
VEU icon
Vanguard FTSE All-World ex-US ETF
VEU
+$27.3M
5
VEEV icon
Veeva Systems
VEEV
+$16.3M

Top Sells

Rank Stock Value
1
ZD icon
Ziff Davis
ZD
+$22.1M
2
GE icon
GE Aerospace
GE
+$19.1M
3
EFX icon
Equifax
EFX
+$17.7M
4
NUVA
NuVasive, Inc.
NUVA
+$17.1M
5
WBA
Walgreens Boots Alliance
WBA
+$13.6M

Sector Composition

Rank Sector Weight
1 Healthcare 17.74%
2 Technology 17.58%
3 Financials 14.76%
4 Industrials 10.83%
5 Consumer Discretionary 9.09%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
NM
1451
DELISTED
Navios Maritime Holdings Inc.
NM
– –
-4,200
Closed -$70K
INOV
1452
DELISTED
Inovalon Holdings, Inc. Class A Common Stock
INOV
– –
-11,000
Closed -$188K
ADMS
1453
CALL
DELISTED
Adamas Pharmaceuticals
ADMS
– –
-7,500
Closed -$159K
STAY
1454
DELISTED
Extended Stay America, Inc. Paired Share Unit
STAY
– –
-47,146
Closed -$943K
RNET
1455
DELISTED
RigNet, Inc.
RNET
– –
-40,190
Closed -$691K
GLUU
1456
DELISTED
Glu Mobile Inc.
GLUU
– –
-44,900
Closed -$169K
ACIA
1457
CALL
DELISTED
Acacia Communications Inc
ACIA
– –
-600
Closed -$28K
ACIA
1458
DELISTED
Acacia Communications Inc
ACIA
– –
-8,840
Closed -$416K
INXN
1459
DELISTED
Interxion Holding N.V.
INXN
– –
-8,425
Closed -$429K
WP
1460
DELISTED
Worldpay, Inc.
WP
– –
-102,162
Closed -$7.2M
GM.WS.B
1461
DELISTED
General Motors Company
GM.WS.B
– –
-2,202
Closed -$49K
QTNA
1462
DELISTED
Quantenna Communications, Inc. Common Stock
QTNA
– –
-539,590
Closed -$9.07M
AKAO
1463
DELISTED
Achaogen Inc
AKAO
– –
-12,154
Closed -$194K
ATHN
1464
DELISTED
Athenahealth, Inc.
ATHN
– –
-6,055
Closed -$753K
BSJI
1465
DELISTED
Invesco BulletShares 2018 High Yield Corporate Bond ETF
BSJI
– –
-11,300
Closed -$286K
ASB.WS
1466
DELISTED
Associated Banc-Corp Warrants
ASB.WS
– –
-875
Closed -$4K
ZIONZ
1467
DELISTED
Zions Bancorporation N.A. Warrants
ZIONZ
– –
-6,000
Closed -$70K
COF.WS
1468
DELISTED
Capital One Financial Corp
COF.WS
– –
-200
Closed -$9K
CMA.WS
1469
DELISTED
Comerica Incorporated Ws
CMA.WS
– –
-700
Closed -$33K
WFC.WS
1470
DELISTED
Wells Fargo & Company Ws
WFC.WS
– –
-4,893
Closed -$105K
BAC.WS.B
1471
DELISTED
Bank Of America Corporation Ws B
BAC.WS.B
– –
-1,000
Closed -$1K
KODK.WS
1472
DELISTED
Eastman Kodak Company
KODK.WS
– –
-6,000
Closed -$1K
GRR
1473
DELISTED
Asia Tigers Fund
GRR
– –
-29,160
Closed -$361K
BETR
1474
DELISTED
Amplify Snack Brands, Inc.
BETR
– –
-151,501
Closed -$1.07M
SYT
1475
DELISTED
Syngenta Ag
SYT
– –
-14,539
Closed -$1.34M
56 57 58
59
60

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William Blair & Company's Q4 2017 Portfolio in Review

As of Q4 2017, William Blair & Company held 1,488 positions worth $14.7B, up 10% from $13.3B the previous quarter. Its ten largest holdings account for 19% of the portfolio.

William Blair & Company deployed $534M of net new capital in Q4 2017, opening 131 new positions and adding to 528 existing holdings. Its largest new stake was Dynavax Technologies: 1,980,526 shares worth $37M.

By sector, the portfolio is most concentrated in Healthcare at 18% of assets, down from 19% a quarter earlier, followed by Technology and Financials.

On the sell side, the largest reduction was Ziff Davis, an estimated $22.1M trimmed.

  • William Blair & Company's largest Q4 2017 buy was Dynavax Technologies: 1,980,526 shares worth $37M.
  • William Blair & Company added most to Alphabet (Google) Class C in Q4 2017, an estimated $138M increase.
  • William Blair & Company's biggest Q4 2017 reduction was Ziff Davis, cutting an estimated $22.1M.
  • William Blair & Company fully exited Bob Evans Farms, Inc. in Q4 2017, selling an estimated $12.5M.
  • William Blair & Company's ten largest holdings make up 19% of its $14.7B portfolio in Q4 2017.
  • William Blair & Company opened 131 new positions and closed 127 in Q4 2017.
  • William Blair & Company's portfolio value rose 10% quarter-over-quarter to $14.7B.

Based on William Blair & Company's 13F filing for Q4 2017, filed 14 Feb 2018.