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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
AAPL icon
1
Apple
AAPL
$5.01T
$559M 3.43%
9,912,892
-66,888
-0.7% -$3.48M
AMZN icon
2
Amazon
AMZN
$2.46T
$499M 3.06%
4,984,160
-11,580
-0.2% -$1.09M
MSFT icon
3
Microsoft
MSFT
$2.94T
$446M 2.73%
3,901,118
+64,678
+2% +$7.01M
V icon
4
Visa
V
$710B
$391M 2.4%
2,607,699
-672
-0% -$95.6K
IDXX icon
5
Idexx Laboratories
IDXX
$45B
$384M 2.35%
1,538,111
-36,279
-2% -$8.81M
GOOG icon
6
Alphabet (Google) Class C
GOOG
$4.09T
$250M 1.53%
4,184,720
+9,180
+0.2% +$550K
MA icon
7
Mastercard
MA
$502B
$249M 1.53%
1,120,250
-17,307
-2% -$3.61M
VEEV icon
8
Veeva Systems
VEEV
$33.9B
$224M 1.37%
2,057,226
+10,751
+0.5% +$975K
ADBE icon
9
Adobe
ADBE
$105B
$223M 1.37%
825,542
-32,820
-4% -$8.46M
ZTS icon
10
Zoetis
ZTS
$33B
$221M 1.36%
2,418,174
-18,524
-0.8% -$1.64M
RHT
11
DELISTED
Red Hat Inc
RHT
$203M 1.24%
1,487,185
+51,258
+4% +$7.33M
DHR icon
12
Danaher
DHR
$141B
$178M 1.09%
1,845,676
+11,591
+0.6% +$1.06M
ULTI
13
DELISTED
Ultimate Software Group Inc
ULTI
$172M 1.05%
533,766
+1,425
+0.3% +$422K
GOOGL icon
14
Alphabet (Google) Class A
GOOGL
$4.1T
$160M 0.98%
2,651,640
-78,500
-3% -$4.75M
JPM icon
15
JPMorgan Chase
JPM
$926B
$157M 0.96%
1,389,255
+5,428
+0.4% +$616K
VUG icon
16
Vanguard Growth ETF
VUG
$213B
$155M 0.95%
5,763,288
+89,334
+2% +$2.34M
SBUX icon
17
Starbucks
SBUX
$119B
$152M 0.93%
2,675,901
-663,925
-20% -$35.1M
SPY icon
18
State Street SPDR S&P 500 ETF Trust
SPY
$776B
$149M 0.91%
513,256
-15,772
-3% -$4.49M
CRM icon
19
Salesforce
CRM
$154B
$148M 0.91%
931,269
-4,488
-0.5% -$666K
ECL icon
20
Ecolab
ECL
$78.9B
$144M 0.88%
916,386
+11,832
+1% +$1.75M
WDAY icon
21
Workday
WDAY
$41.6B
$142M 0.87%
969,357
-1,596
-0.2% -$222K
DXCM icon
22
DexCom
DXCM
$29.2B
$141M 0.86%
3,935,608
-78,804
-2% -$2.44M
WSO icon
23
Watsco Inc
WSO
$12.7B
$138M 0.85%
776,536
-26,713
-3% -$4.72M
PYPL icon
24
PayPal
PYPL
$50.5B
$136M 0.83%
1,550,421
+49,495
+3% +$4.36M
GWRE icon
25
Guidewire Software
GWRE
$13.9B
$133M 0.82%
1,317,154
+53,070
+4% +$5.1M
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.