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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
+9.1%
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
$19.5B
AUM Growth
+$2.1B
Cap. Flow
+$465M
Cap. Flow %
2.39%
Top 10 Hldgs %
22.3%
Holding
1,847
New
125
Increased
679
Reduced
598
Closed
120

Top Buys

Rank Stock Value
1
ANET icon
Arista Networks
ANET
+$24M
2
DIS icon
Walt Disney
DIS
+$22.5M
3
PYPL icon
PayPal
PYPL
+$21.1M
4
AXP icon
American Express
AXP
+$18.6M
5
NOW icon
ServiceNow
NOW
+$15.5M

Top Sells

Rank Stock Value
1
CELG
Celgene Corp
CELG
+$25M
2
ULTA icon
Ulta Beauty
ULTA
+$21.8M
3
EOG icon
EOG Resources
EOG
+$20.9M
4
ABMD
Abiomed Inc
ABMD
+$16.3M
5
GRUB
Just Eat Takeaway.com N.V. American Depositary Shares
GRUB
+$11.2M

Sector Composition

Rank Sector Weight
1 Technology 23.46%
2 Healthcare 17.35%
3 Financials 13.04%
4 Consumer Discretionary 9.94%
5 Industrials 9.53%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
EL icon
226
Estee Lauder
EL
$31.5B
$14.2M 0.07%
68,650
+1,708
+3% +$332K
ROK icon
227
Rockwell Automation
ROK
$50.1B
$14.1M 0.07%
69,467
+28,808
+71% +$5.34M
SPMD icon
228
State Street SPDR Portfolio S&P 400 Mid Cap ETF
SPMD
$18.7B
$14M 0.07%
387,425
+2,194
+0.6% +$76.5K
GE icon
229
GE Aerospace
GE
$396B
$13.9M 0.07%
249,352
+38,288
+18% +$1.98M
TCMD icon
230
Tactile Systems Technology
TCMD
$676M
$13.8M 0.07%
203,837
+13,389
+7% +$741K
BJ icon
231
BJs Wholesale Club
BJ
$12.3B
$13.6M 0.07%
599,384
+243,973
+69% +$6.03M
XYZ
232
Block Inc
XYZ
$50.1B
$13.6M 0.07%
217,070
-11,372
-5% -$727K
NEE icon
233
NextEra Energy
NEE
$179B
$13.5M 0.07%
222,632
-7,876
-3% -$460K
UNF icon
234
Unifirst Corp
UNF
$5.24B
$13.4M 0.07%
66,123
-615
-0.9% -$125K
BP icon
235
BP
BP
$106B
$13.1M 0.07%
347,116
-5,893
-2% -$224K
PRO
236
DELISTED
PROS Holdings
PRO
$13.1M 0.07%
218,000
-75,000
-26% -$4.33M
MRCY icon
237
Mercury Systems
MRCY
$6.45B
$13.1M 0.07%
189,009
+4,516
+2% +$325K
DVY icon
238
iShares Select Dividend ETF
DVY
$23.5B
$12.8M 0.07%
121,599
-493
-0.4% -$50.8K
MU icon
239
Micron Technology
MU
$1.01T
$12.7M 0.07%
235,460
-7,097
-3% -$339K
ROKU icon
240
Roku
ROKU
$21.8B
$12.2M 0.06%
91,428
-2,903
-3% -$399K
SCZ icon
241
iShares MSCI EAFE Small-Cap ETF
SCZ
$13.6B
$12.1M 0.06%
194,135
+11,348
+6% +$682K
KMB icon
242
Kimberly-Clark
KMB
$37.3B
$11.9M 0.06%
86,517
-10,172
-11% -$1.38M
IRM icon
243
Iron Mountain
IRM
$37.8B
$11.9M 0.06%
372,347
-41,110
-10% -$1.35M
CBOE icon
244
Cboe Global Markets
CBOE
$29.7B
$11.8M 0.06%
98,686
+3,065
+3% +$360K
BWXT icon
245
BWX Technologies
BWXT
$15.4B
$11.8M 0.06%
189,952
+8,967
+5% +$533K
CCOI icon
246
Cogent Communications
CCOI
$644M
$11.8M 0.06%
179,124
+2,852
+2% +$172K
EQIX icon
247
Equinix
EQIX
$104B
$11.8M 0.06%
20,170
+890
+5% +$500K
WFC icon
248
Wells Fargo
WFC
$270B
$11.8M 0.06%
218,556
+10,224
+5% +$535K
IWF icon
249
iShares Russell 1000 Growth ETF
IWF
$127B
$11.8M 0.06%
267,180
+3,528
+1% +$147K
TJX icon
250
TJX Companies
TJX
$177B
$11.6M 0.06%
189,293
+3,909
+2% +$231K
8 9
10
11 12

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William Blair & Company's Q4 2019 Portfolio in Review

As of Q4 2019, William Blair & Company held 1,847 positions worth $19.5B, up 12% from $17.4B the previous quarter. Its ten largest holdings account for 22% of the portfolio.

William Blair & Company's Q4 2019 filing shows 125 new, 679 increased, 598 reduced and 120 closed positions. Its largest new stake was Dynatrace: 165,602 shares worth $4.19M. The largest sale was Celgene Corp, an estimated $25M.

By sector, the portfolio is most concentrated in Technology at 23% of assets, up from 23% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q4 2019 buy was Dynatrace: 165,602 shares worth $4.19M.
  • William Blair & Company added most to Arista Networks in Q4 2019, an estimated $24M increase.
  • William Blair & Company's biggest Q4 2019 reduction was Ulta Beauty, cutting an estimated $21.8M.
  • William Blair & Company fully exited Celgene Corp in Q4 2019, selling an estimated $25M.
  • William Blair & Company's ten largest holdings make up 22% of its $19.5B portfolio in Q4 2019.
  • William Blair & Company opened 125 new positions and closed 120 in Q4 2019.
  • William Blair & Company's portfolio value rose 12% quarter-over-quarter to $19.5B.

Based on William Blair & Company's 13F filing for Q4 2019, filed 13 Feb 2020.