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William Blair & Company

William Blair & Company Portfolio holdings

AUM $38.4B
1-Year Est. Return 25.71%
This Fund
S&P 500
This Quarter Est. Return
+12.53%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+665.86%
AUM
$23.6B
AUM Growth
+$2.6B
Cap. Flow
+$316M
Cap. Flow %
1.34%
Top 10 Hldgs %
26.84%
Holding
1,800
New
126
Increased
679
Reduced
652
Closed
80

Top Buys

Rank Stock Value
1
QDEL icon
QuidelOrtho
QDEL
+$40.3M
2
TDOC icon
Teladoc Health
TDOC
+$32.5M
3
CTAS icon
Cintas
CTAS
+$25.5M
4
ECL icon
Ecolab
ECL
+$25.4M
5
FTV icon
Fortive
FTV
+$24M

Top Sells

Rank Stock Value
1
GS icon
Goldman Sachs
GS
+$46.7M
2
GWRE icon
Guidewire Software
GWRE
+$38.9M
3
ANET icon
Arista Networks
ANET
+$31.4M
4
V icon
Visa
V
+$25.9M
5
PFNX
Pfenex Inc.
PFNX
+$25.4M

Sector Composition

Rank Sector Weight
1 Technology 27.37%
2 Healthcare 19.68%
3 Financials 10.88%
4 Consumer Discretionary 10.56%
5 Industrials 8.4%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
BKI
301
DELISTED
Black Knight, Inc. Common Stock
BKI
$8.53M 0.04%
97,998
-5,206
-5% -$410K
DT icon
302
Dynatrace
DT
$14.3B
$8.51M 0.04%
207,431
+46,591
+29% +$1.91M
TSM icon
303
TSMC
TSM
$2.23T
$8.49M 0.04%
104,752
+10,493
+11% +$797K
DOW icon
304
Dow Inc
DOW
$22.1B
$8.49M 0.04%
180,471
+14,249
+9% +$640K
SITE icon
305
SiteOne Landscape Supply
SITE
$4.22B
$8.42M 0.04%
69,036
+25,263
+58% +$3.03M
XYL icon
306
Xylem
XYL
$28.5B
$8.39M 0.04%
99,768
-65,880
-40% -$5.13M
KMI icon
307
Kinder Morgan
KMI
$70.7B
$8.38M 0.04%
679,484
+43,642
+7% +$608K
BWXT icon
308
BWX Technologies
BWXT
$15.8B
$8.35M 0.04%
148,275
-13,948
-9% -$782K
USB icon
309
US Bancorp
USB
$101B
$8.31M 0.04%
231,744
-5,703
-2% -$209K
ROK icon
310
Rockwell Automation
ROK
$50.1B
$8.23M 0.03%
37,284
+546
+1% +$122K
AIRG icon
311
Airgain
AIRG
$69.3M
$8.22M 0.03%
616,140
-29,000
-4% -$372K
VMC icon
312
Vulcan Materials
VMC
$36.3B
$8.14M 0.03%
60,057
+40,006
+200% +$5.03M
SJM icon
313
J.M. Smucker
SJM
$12.7B
$8.04M 0.03%
69,605
+6,925
+11% +$772K
XLI icon
314
State Street Industrial Select Sector SPDR ETF
XLI
$34.7B
$8.03M 0.03%
104,335
+22,531
+28% +$1.69M
GNRC icon
315
Generac Holdings
GNRC
$13.1B
$7.83M 0.03%
40,419
+5,155
+15% +$848K
VXF icon
316
Vanguard Extended Market ETF
VXF
$32.1B
$7.82M 0.03%
60,313
-645
-1% -$82.1K
GLW icon
317
Corning
GLW
$144B
$7.8M 0.03%
240,778
+61,870
+35% +$1.91M
CORP icon
318
PIMCO Investment Grade Corporate Bond Index Exchange-Traded Fund
CORP
$1.58B
$7.59M 0.03%
66,185
+111
+0.2% +$12.9K
STKL
319
DELISTED
SunOpta
STKL
$7.57M 0.03%
1,020,766
+27,597
+3% +$176K
EGIO
320
DELISTED
Edgio, Inc. Common Stock
EGIO
$7.5M 0.03%
32,544
+24,296
+295% +$6.08M
XLK icon
321
State Street Technology Select Sector SPDR ETF
XLK
$124B
$7.49M 0.03%
128,310
-4,462
-3% -$252K
SEDG icon
322
SolarEdge
SEDG
$1.97B
$7.45M 0.03%
31,265
+2,393
+8% +$460K
PRLB icon
323
Protolabs
PRLB
$2.17B
$7.44M 0.03%
57,442
-49,681
-46% -$6.53M
MO icon
324
Altria Group
MO
$107B
$7.43M 0.03%
192,233
+13,044
+7% +$543K
PRAA icon
325
PRA Group
PRAA
$737M
$7.41M 0.03%
185,399
+3,129
+2% +$130K
11 12
13
14 15

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William Blair & Company's Q3 2020 Portfolio in Review

As of Q3 2020, William Blair & Company held 1,800 positions worth $23.6B, up 12% from $21B the previous quarter. Its ten largest holdings account for 27% of the portfolio.

William Blair & Company's Q3 2020 filing shows 126 new, 679 increased, 652 reduced and 80 closed positions. Its largest new stake was Unity: 72,858 shares worth $6.36M. The largest sale was Goldman Sachs, an estimated $46.7M.

By sector, the portfolio is most concentrated in Technology at 27% of assets, down from 27% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q3 2020 buy was Unity: 72,858 shares worth $6.36M.
  • William Blair & Company added most to QuidelOrtho in Q3 2020, an estimated $40.3M increase.
  • William Blair & Company's biggest Q3 2020 reduction was Goldman Sachs, cutting an estimated $46.7M.
  • William Blair & Company fully exited Pfenex Inc. in Q3 2020, selling an estimated $25.4M.
  • William Blair & Company's ten largest holdings make up 27% of its $23.6B portfolio in Q3 2020.
  • William Blair & Company opened 126 new positions and closed 80 in Q3 2020.
  • William Blair & Company's portfolio value rose 12% quarter-over-quarter to $23.6B.

Based on William Blair & Company's 13F filing for Q3 2020, filed 6 Nov 2020.