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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
COL
276
DELISTED
Rockwell Collins
COL
$8.49M 0.05%
60,450
+34,728
+135% +$4.78M
ITA icon
277
iShares US Aerospace & Defense ETF
ITA
$15B
$8.44M 0.05%
77,982
+256
+0.3% +$26.3K
TEL icon
278
TE Connectivity
TEL
$63.5B
$8.43M 0.05%
95,834
-1,199
-1% -$110K
UN
279
DELISTED
Unilever NV New York Registry Shares
UN
$8.4M 0.05%
151,191
-19,982
-12% -$1.13M
CHD icon
280
Church & Dwight Co
CHD
$24.6B
$8.27M 0.05%
139,262
-1,270
-0.9% -$71.9K
SFIX
281
Stitch Fix
SFIX
$535M
$8.17M 0.05%
186,605
+84,891
+83% +$3.09M
DUK icon
282
Duke Energy
DUK
$96.3B
$8.14M 0.05%
101,774
+2,250
+2% +$182K
SHW icon
283
Sherwin-Williams
SHW
$89.7B
$8.07M 0.05%
53,172
-981
-2% -$145K
TWTR
284
DELISTED
Twitter, Inc.
TWTR
$8.07M 0.05%
283,412
-4,104
-1% -$145K
XLF icon
285
State Street Financial Select Sector SPDR ETF
XLF
$58.5B
$8.06M 0.05%
292,385
-27,534
-9% -$770K
AIRG icon
286
Airgain
AIRG
$71.4M
$8.06M 0.05%
613,383
+46,375
+8% +$521K
APPF icon
287
AppFolio
APPF
$6.76B
$7.96M 0.05%
101,546
-7,766
-7% -$587K
TWLO icon
288
Twilio
TWLO
$28.7B
$7.87M 0.05%
91,201
-7,371
-7% -$539K
MTN icon
289
Vail Resorts
MTN
$5.34B
$7.84M 0.05%
28,583
+6,989
+32% +$2.01M
WP
290
DELISTED
Worldpay, Inc.
WP
$7.77M 0.05%
76,743
-100
-0.1% -$9.13K
CLR
291
DELISTED
CONTINENTAL RESOURCES INC.
CLR
$7.75M 0.05%
113,514
-3,120
-3% -$197K
WMB icon
292
Williams Companies
WMB
$88.8B
$7.71M 0.05%
283,717
+238,830
+532% +$6.93M
BMRN icon
293
BioMarin Pharmaceuticals
BMRN
$11.6B
$7.69M 0.05%
79,328
-205
-0.3% -$20.5K
NOVT icon
294
Novanta
NOVT
$6.13B
$7.62M 0.05%
111,372
+39,606
+55% +$2.78M
PARA
295
DELISTED
Paramount Global Class B
PARA
$7.6M 0.05%
132,318
+32,696
+33% +$1.8M
NVO
296
Novo Nordisk
NVO
$201B
$7.57M 0.05%
321,202
+27,706
+9% +$676K
CBOE icon
297
Cboe Global Markets
CBOE
$29.8B
$7.57M 0.05%
78,835
-2,416
-3% -$244K
FITB
298
Fifth Third Bancorp
FITB
$52.3B
$7.52M 0.05%
269,476
-158,363
-37% -$4.65M
ALRM icon
299
Alarm.com
ALRM
$2.79B
$7.49M 0.05%
130,398
+11,673
+10% +$587K
IWB icon
300
iShares Russell 1000 ETF
IWB
$49.9B
$7.48M 0.05%
46,237
+13,185
+40% +$2.09M
10 11
12
13 14

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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.