We are live on ! Find out more
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
+563.35%
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
TENB icon
301
Tenable Holdings
TENB
$3.97B
$7.78M 0.04%
324,889
+202,633
+166% +$4.94M
KMPR icon
302
Kemper
KMPR
$1.72B
$7.65M 0.04%
98,699
-7,226
-7% -$539K
GPN icon
303
Global Payments
GPN
$23.9B
$7.61M 0.04%
41,704
-318
-0.8% -$54.6K
IWR icon
304
iShares Russell Mid-Cap ETF
IWR
$57B
$7.6M 0.04%
127,522
+3,047
+2% +$175K
INGN icon
305
Inogen
INGN
$178M
$7.55M 0.04%
110,568
-1,903
-2% -$119K
IUSG icon
306
iShares Core S&P US Growth ETF
IUSG
$33.5B
$7.54M 0.04%
111,420
+17,857
+19% +$1.16M
XLNX
307
DELISTED
Xilinx Inc
XLNX
$7.53M 0.04%
77,046
+11,037
+17% +$1.04M
OKE icon
308
Oneok
OKE
$55B
$7.42M 0.04%
98,129
+5,203
+6% +$372K
COP icon
309
ConocoPhillips
COP
$140B
$7.42M 0.04%
114,047
-14,040
-11% -$826K
CONE
310
DELISTED
CyrusOne Inc Common Stock
CONE
$7.37M 0.04%
112,673
+36,711
+48% +$2.52M
FTNT icon
311
Fortinet
FTNT
$120B
$7.33M 0.04%
343,095
-2,925
-0.8% -$55K
ITA icon
312
iShares US Aerospace & Defense ETF
ITA
$14.8B
$7.28M 0.04%
65,594
-698
-1% -$78.4K
AJG icon
313
Arthur J. Gallagher & Co
AJG
$64.3B
$7.25M 0.04%
76,183
+3,030
+4% +$278K
CORP icon
314
PIMCO Investment Grade Corporate Bond Index Exchange-Traded Fund
CORP
$1.58B
$7.21M 0.04%
65,609
+449
+0.7% +$49.2K
EPAY
315
DELISTED
Bottomline Technologies Inc
EPAY
$7.15M 0.04%
133,372
+2,113
+2% +$96.1K
CLX icon
316
Clorox
CLX
$12.8B
$7.11M 0.04%
46,334
-1,216
-3% -$182K
AMG icon
317
Affiliated Managers Group
AMG
$9.92B
$7.08M 0.04%
83,577
-17,884
-18% -$1.47M
TWTR
318
DELISTED
Twitter, Inc.
TWTR
$7.04M 0.04%
219,737
-14,637
-6% -$481K
EVBG
319
DELISTED
Everbridge, Inc. Common Stock
EVBG
$7.02M 0.04%
89,945
+853
+1% +$65.9K
RP
320
DELISTED
RealPage, Inc.
RP
$7.01M 0.04%
130,471
-66,466
-34% -$3.79M
DOW icon
321
Dow Inc
DOW
$21.4B
$7.01M 0.04%
128,118
+3,769
+3% +$195K
MXL icon
322
MaxLinear
MXL
$6.12B
$6.98M 0.04%
328,966
-12,747
-4% -$264K
PRAA icon
323
PRA Group
PRAA
$656M
$6.96M 0.04%
191,743
-1,669
-0.9% -$59.1K
OSW icon
324
OneSpaWorld
OSW
$2.7B
$6.95M 0.04%
412,653
+17,339
+4% +$273K
BKI
325
DELISTED
Black Knight, Inc. Common Stock
BKI
$6.9M 0.04%
107,045
+1,321
+1% +$81.8K
11 12
13
14 15

Similar funds

SAM
Storebrand Asset Management Lysaker, Norway $34.8B AUM 25.49% 1-Year Est. Return
Chevy Chase Trust
Chevy Chase Trust Bethesda, Maryland $34.7B AUM 29.45% 1-Year Est. Return
VIA
Vanguard Investments Australia Victoria, Australia $34.6B AUM
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return
Pacer Advisors
Pacer Advisors Malvern, Pennsylvania $35.6B AUM 18.19% 1-Year Est. Return
Kayne Anderson Rudnick Investment Management
Kayne Anderson Rudnick Investment Management Los Angeles, California $34B AUM 6.31% 1-Year Est. Return
Viking Global Investors
Viking Global Investors Stamford, Connecticut $35.7B AUM 21.3% 1-Year Est. Return
MML Investors Services
MML Investors Services Springfield, Massachusetts $36.1B AUM 19.68% 1-Year Est. Return

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.